Fig 2 - uploaded by Xian Jian
Content may be subject to copyright.
SEM images of CuO nanocrystals under di ff erent molar ratio of hydrazine hydrate (0.1 mol L À 1 ): (a) 0.4 mmol, (b) 0.8 mmol, (c)
Source publication
CuO nanocrystals with as-designed morphologies such as uniform quasi-spherical nanoparticles and high-purity nanoleaves were synthesized by adjusting the addition of sodium hydroxide and hydrazine hydrate in aqueous solution at room temperature (25 °C). The increase of sodium hydroxide would accelerate the reaction rate and favor the nucleation of...
Contexts in source publication
Context 1
... CuO nanocrystals were prepared by changing the additions of hydrazine hydrate when the NaOH solution was 3.4 mmol. Fig. 2 shows the scanning electron microscope (SEM) images of the as-prepared products when the additions of hydrazine hydrate range from 0.4 to 2.0 mmol. From the SEM observation, various CuO nanocrystals including nanoleaves accompanied with nanocubics, irregular nanoparticles and uniformed quasi-spherical nanoparticles were prepared. In ...
Context 2
... hydrate, CuO nano- leaves and nanocubic formed in this case. The length of CuO nanoleaves are $600 nm and the width of CuO nanocubics are $350 nm on average. With the addition of hydrazine hydrate up Paperto 0.8 mmol, the as-prepared CuO nanocrystal displayed irreg- ular shapes, and their sizes ranged from 400 nm to 1400 nm and $770 nm on average (Fig. 2a). When the hydrazine hydrate addition increased to 1 mmol, uniformed CuO nanoparticles sized about 500 nm were prepared (Fig. 2b). The CuO nano- particles got more round, uniform and larger in size ($1080 nm) in the case of 2.0 mmol hydrazine hydrate (Fig. 2d). From the SEM observation, it is obvious that the increasing quantity of ...
Context 3
... are $350 nm on average. With the addition of hydrazine hydrate up Paperto 0.8 mmol, the as-prepared CuO nanocrystal displayed irreg- ular shapes, and their sizes ranged from 400 nm to 1400 nm and $770 nm on average (Fig. 2a). When the hydrazine hydrate addition increased to 1 mmol, uniformed CuO nanoparticles sized about 500 nm were prepared (Fig. 2b). The CuO nano- particles got more round, uniform and larger in size ($1080 nm) in the case of 2.0 mmol hydrazine hydrate (Fig. 2d). From the SEM observation, it is obvious that the increasing quantity of hydrazine hydrate has a signicant inuence on modulating the morphologies of CuO nanocrystals ranging from two- dimension (2D) to ...
Context 4
... irreg- ular shapes, and their sizes ranged from 400 nm to 1400 nm and $770 nm on average (Fig. 2a). When the hydrazine hydrate addition increased to 1 mmol, uniformed CuO nanoparticles sized about 500 nm were prepared (Fig. 2b). The CuO nano- particles got more round, uniform and larger in size ($1080 nm) in the case of 2.0 mmol hydrazine hydrate (Fig. 2d). From the SEM observation, it is obvious that the increasing quantity of hydrazine hydrate has a signicant inuence on modulating the morphologies of CuO nanocrystals ranging from two- dimension (2D) to three-dimension (3D). Large quantities of hydrazine hydrate favour the agglomeration of CuO nano- particles into quasi-spherical ...
Context 5
... S1 in the ESI †). The UV-vis spectrum of the as- obtained CuO nanoleaves well dispersed in ethanol shows a broad absorption peak centered at $278 nm. The band gap of CuO nanoleaves can be determined via UV-vis spectrum by employing Tauc/Davis-Mott Model. 33 The direct band gap energy of the as-obtained CuO nanoleaves is calculated to be 2.17 eV (Fig. S2 ...
Similar publications
The design of highly active electrocatalyst for ethanol electrooxidation (EOR) and oxygen reduction reaction (ORR) is of great significance for the improvement of efficient direct ethanol fuel cells (DEFCs). Therefore, creating high index facets nanocrystals with abundant catalytic active sites of stepped atoms is an effective way to enhance the el...
Hierarchical Ag-ZnO heterostructures have been synthesized via a template free single step hydrothermal method. Structural and morphological studies reveal the formation of heterostructures comprised of Ag nanoparticles (similar to 20 nm) organized on tapered ZnO nanorods under the prevailing experimental conditions. A plausible reaction and growth...
Silver
nanosheets, with average size tunable from 30 to 100 nm, have been synthesized onto solid substrates by using seed-mediated growth method. The growth of silver
nanosheets have been carried out at temperature of 30°C in the presence of a binary surfactant mixture: cetyl trimethyl ammonium bromide (CTAB) and poly-vinyl pyrrolidone (PVP) with...
Citations
... This experiment was performed to prepare copper oxide leaves and sphere-like structures [34]. For CuO leaves, a solution of 1 mmol Copper Chloride (0.1758 g CuCl 2 ⋅2H 2 O) in 300 ml DiW under constant magnetic stirring at 25 • C (room temperature) is prepared. ...
Ammonium perchlorate (APC) as an oxidizer component of solid propellant is studied experimentally due to its complex nature of decomposition reactions concerning solid-stated theories. To reveal the surface-structure chemistry of copper oxide (CuO) as a catalyst to decomposition reactions of APC, CuO (26 ~ 675 nm) in cubical, leaf, leaf sphere, and rod-like structures successfully prepared and crystallized with APC to distinctive CuO/APC (10-20μm) composites. HAADF-STEM, XPS along Raman, and BET characterize copper oxide's chemically enhanced surface activity. TG-DSC-QMS detects the reaction process between CuO and APC, and a high-speed camera records the combustion process of CuO/APC in the open air. The results show that other than surface area, the surface adsorption oxygen property is the key parameter to control the catalytic effect. The CuO-nanorods provided the highest chemical species of higher Cu1+/Cu2+ along maximal surface adsorb oxygen to chemisorption of NH4+ and ClO4-. The kinetic analysis found an increase in conversion rate, activation energy with a higher frequency factor, and rate constant by CuO addition to APC.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architecture nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architecture nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomater-ials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomater-ials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer ther-apeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
... Containing micropores [131,132] Environment friendly, facile, non-toxic and cost effective synthesize Efficient charge-discharge stability [70] High biocompatibility [53] Enhanced drug loading content Enhanced stability of enzymes and proteins Favorable enzyme molecules conformation in nanoflowers [128] Good stability and biocompatibility ...
... The leaf-shaped nanostructures contain micropores which has significantly improved their performance in some applications, for instance, these pores provide more efficient path for the reactant molecules to shift toward the surface's active sites [131]. Moreover, these pores can ease the transportation of hole carriers in the sensing process [132]. Table 5 shows the summary of different NPs advantages. ...
The development of architectured nanomaterials has been booming in recent years in part due to their expanded applications in the biomedical field, such as biosensing, bioimaging, drug delivery, and cancer therapeutics. Nanomaterials exhibit a wide variety of shapes depending on both the intrinsic properties of the materials and the synthesis procedures. Typically, the large surface areas of nanomaterials improve the rate of mass transfer in biological reactions. They also have high self-ordering and assembly behaviors, which make them great candidates for various biomedical applications. Some nanomaterials have a high conversion rate in transforming the energy of photons into heat or fluorescence, thus showing promise in cancer treatment (such as hyperthermia) and bioimaging. The nanometric dimension makes them suitable for passing through the biological barriers or interacting with the natural molecules (such as DNA, protein). Nanoflowers, nanotrees, nanostars, and nanodendrites are examples of nano-sized structures, which exhibit unique geometry-dependent properties. Here we reviewed the fabrication methods, features, properties, and biomedical applications of four nano-structured materials including nanoflowers, nanotrees, nanostars, nanodendrites, and nanoleaves. We further provided our perspectives on employing these novel nanostructures as advanced functional materials for a broad spectrum of applications.
