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![(a) Biofabrication of CdTe QDS in E. coli cells. (b) Merged ambient light and fluorescent micrographs of control medium and medium with CdTe QDs. Reprinted (Adapted) with permission from [107]. Copyright© 2017 Elsevier B. V. All rights reserved.](publication/362017725/figure/fig5/AS:11431281244825333@1716003451773/a-Biofabrication-of-CdTe-QDS-in-E-coli-cells-b-Merged-ambient-light-and-fluorescent.png)
(a) Biofabrication of CdTe QDS in E. coli cells. (b) Merged ambient light and fluorescent micrographs of control medium and medium with CdTe QDs. Reprinted (Adapted) with permission from [107]. Copyright© 2017 Elsevier B. V. All rights reserved.
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Quantum dots (QDs) or nanocrystals are luminous semiconductors with dimension in the range from 2 to 20 nm. Owing to the unmatched electronic and optical properties, quantum dots notice applications in various domains such as optoelectronics, sensors, photodetection, transistors, LEDs (light‐emitting devices), quantum computing, solar cells, cataly...
Citations
... Quantum computing is a transformative technology with immense potential to revolutionize various scientific and engineering fields. It offers opportunities for industrial symbiosis within ecological limits, advancements in macro-energy systems Biswas et al. (2022), sustainable energy material designs Vyas et al. (2022), and addressing pollution-routing challenges in sustainable logistics management Lo and Shih (2021). Furthermore, it can offer potential capabilities to manage renewable and sustainable energy systems even at bigger scales with improvements in quantum algorithms and technology Ajagekar and You (2022). ...
The field of quantum computing holds tremendous potential for advancing sustainable development through the design and development of sustainable materials and technologies. The domain has undergone significant growth and development in recent years, necessitating a quantitative and inclusive analysis of research advancements to comprehend research trends and directions. Henceforth, a scientometric analysis of scholarly literature from the Scopus database has been conducted to understand the research status of the discipline by analysing publication trends, most cited article analysis, document co‐citation analysis, and author co‐citation analysis. Furthermore, the CiteSpace tool is used to fulfil the visualization needs and comprehensive analysis of scientific literature to highlight emerging topics and quantum computing trends. The results of the study unveil spin‐based quantum computing and lithographically defined quantum dots with exchange coupling as highly promising frontiers for exploration. These cutting‐edge advancements exhibit exceptional potential for attaining remarkable fidelity in the quantum computing domain. Furthermore, it uncovers a trove of potential research areas for delving into the captivating phenomenon of quantum entanglement. Nuclear magnetic resonance, quantum dots, and spontaneous parametric down‐conversion techniques emerge as promising areas, enticing scholars to embark on scientific quests aimed at unravelling the intricate complexities of entanglement. The study offers a comprehensive overview of quantum computing research advancements, serving as a valuable resource for researchers and policymakers driving sustainable development.
... Biomasses and their wastes have been considered cost-effective precursor materials to prepare carbonbased nanomaterials. Carbon dots are defined as quasispherical morphological particles, and they have been known as one of the popular carbon nanomaterials since their discovery [6][7][8][9]. The low toxicity, water solubility, tunable photoluminescence properties, low synthesis cost, and high chemical and physical stability are some of the crucial properties of carbon quantum dots (CQDs) [10][11][12]. ...
... The PL intensities of CQD samples prepared at different pH (3)(4)(5)(6)(7)(8)(9)(10)(11)(12) are shown in Fig. 9. The fluorescence intensity and the selectivity changed significantly in an acidic and basic medium of CQDs. ...
... PL emission spectra of CD of various pH(3)(4)(5)(6)(7)(8)(9)(10)(11)(12). b The image under 365-nm UV light after different pH for the CQDsFig. ...
Carbon quantum dots (CQDs), which have excellent photoluminescence properties, have been synthesized from pomegranate peel and sucrose as carbon sources by a hydrothermal method in this study. The reaction temperature and the synthesis time were optimized for obtaining CQDs with unique physical and chemical properties that can easily be soluble in water and show luminescence properties. The obtained CQDs were characterized by using thermogravimetric analysis (TGA), UV–Vis spectroscopy, fluorescence spectroscopy, X-ray photoelectron spectroscopy (XPS), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FT-IR), and X-ray diffractometry. The quantum yield (QY) of the synthesized CQDs was calculated as 7.02%. The obtained CQDs exhibited highly selective sensor properties and detected Fe³⁺ ions in Co²⁺, Al³⁺, Hg²⁺, Cu²⁺, Zn²⁺, Ni²⁺, Ba²⁺, Mn²⁺, Li⁺, K⁺, and Fe²⁺ cations at the same concentration. Fe(III) ions can be detected at 7.488 μM concentration with R² = 0.952 value. The sensitivity performance of the obtained CQDs was also evaluated in different types of real water samples. It was also determined the synthesized carbon quantum dots were very sensitive to Fe³⁺ in well water (CQDs-W), seawater (CQDs-Sea), dam water (CQDs-D), tap water (CQDs-T), snow water (CQDs-Snow), and ultrapure water (CQDs-U) as nearly the same in the pure water samples under ideal environments that quenched the fluorescence intensity of CQDs.
Graphical Abstract
Photocatalysis using natural photosynthesis is a green technology that is gaining popularity in a number of industries due to its potential for environmental applications and the use of solar energy. Focus is being placed on using inexpensive materials and light-emitting diodes (LEDs) of various wavelengths in photocatalytic reactions in order to improve the performance of solar-driven photocatalysts at a lower cost. In this study, a scalable, highly efficient photocatalytic and sonophotocatalytic method was investigated for the reduction of nitro-compounds by a water/titania/β-cyclodextrin system under sunlight and blue LED irradiation, using sodium sulfide as a sacrificial electron donor. β-Cyclodextrin, chemically bound to TiO2 nanoparticles as an encapsulating agent, hosted nitro compounds in aqueous media and formed an inclusion complex. In addition, this method was used to successfully carry out one-pot reduction-amidation of nitroarene compounds in the presence of acetic anhydride. Interestingly, it was found that ultrasound has a synergistic effect on photocatalytic reduction and considerably reduces the duration time. In this regard, a fast, practical sonophotocatalytic reduction of nitroarenes was carried out in an ultrasound bath.
Quantum dots (QDs) are renowned for their remarkable optoelectronic properties, making them suitable for applications such as bioimaging and optoelectronics. However, their use in gene delivery has been restricted due to the low DNA loading capacity. This study aimed to develop a biomimetic DNA delivery system by encapsulating polyethyleneimine (PEI) functionalized silicon QDs (SiQDs) with cell membranes and evaluate its potential as a gene vector in vitro. To achieve this, hydrophilic dispersed silicon QDs (PQDs) were prepared through a one-pot hydrothermal reaction of PEI and 3-Aminopropyltrimethoxysilane (APTMS). Subsequently, red blood cell membrane (RBCM) encapsulated biomimetic QDs (CM-PQDs) was obtained through the extrusion method. The CM-PQDs exhibited higher DNA loading capacity and better stability than naked SiQDs. The CM-PQDs/DNA complex was effectively taken up by cells, as observed through the fluorescence characteristics of QDs themselves. Both CM-P10QDs (prepared with PEI10k) and CM-P25QDs (prepared with PEI25k) could deliver DNA into cells and express the reporter protein successfully. CM-P25QDs showed a higher transfection efficiency of 77.32% in 293 T cells and 47.11% in HeLa cells than SiQDs and CM-P10QDs. The results also indicated that cell membrane encapsulation could effectively reduce the cytotoxicity of SiQDs further. Therefore, the study concludes that CM-PQDs have the potential to serve as a safe and traceable biomimetic gene delivery system.
