Duo Yang's research while affiliated with Zhengzhou University and other places

... It is urgent to find a solution to weaken and even prevent the detrimental effects from the urea applications. The electrocatalytic urea oxidation reaction (UOR) provides a solution to decompose urea molecules in an environmentally friendly pathway [11][12][13][14][15][16][17]. Apart from being utilized in fuel cells, UOR with a theoretical potential of 0.37 V is enticing to be used to replace the anodic oxygen evolution reaction (OER) with a theoretical potential of 1.23 V in water electrolysis [3,11,[18][19][20][21][22]. ...

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An amorphous nickel carbonate catalyst for superior urea oxidation reaction

... Metal-free or minimally metal-containing catalysts with exceptional performance, low cost, nontoxicity, and multiple functions are strongly encouraged at the present time. Materials such as carbon fiber paper (CFP), carbon nanotubes (CNTs)(1-D) [43], carbon cloth (CC) [44][45][46][47], glassy carbon electrode (GCE), carbon nanosheet [48][49][50], porous carbon, graphene nanosheets (2-D) [46], XC-72 Vulcan carbon, carbon cloth, carbon membrane, carbon quantum dots and multiwalled carbon nanotubes (MWCNTs), which are carbon-based, have been manufactured by incorporation of transition metals that are electrochemically active. These catalysts have demonstrated extraordinary potential due to their superconductivity, immense specific surface area, and enhanced mass diffusion as a result of their remarkable ability to reduce Ru nanocrystal agglomeration [51]. ...

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Breakthroughs and prospects in ruthenium-based electrocatalyst for hydrogen evolution reaction

... Phytic acid (C 6 H 18 O 24 P 6 ), for example, as a natural organic macromolecule distilled from grain, can coordinate with multiple metal ions and form strong bonds due to the presence of six phosphate groups and twelve hydroxyl groups in its structure (He et al., 2022). At that point, functional materials derived from phytic acid have shown great advantages and promising prospects in many fields, including coatings Song et al., 2022), catalysis (Wang et al., 2018;Gwóźdź and Brzęczek-Szafran, 2022;Song et al., 2023;Yang et al., 2023), and pharmaceuticals (Wang Y. et al., 2021). Herein, we prepared metal-phytic acid hybrids using natural phytic acid as building block, and Ni-phytic acid hybrid (Ni-PA) shows high catalytic performance in the electrochemical oxidation of HMF. ...

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Nickel-phytic acid hybrid for highly efficient electrocatalytic upgrading of HMF

... However, the initial HER process usually undergoes an insufficient reaction rate and overpotential (η) on account of the sluggish kinetics of strong uphill reactions, which limits the efficiency of H 2 production and increases energy consumption [3][4][5]. As a result, effective electrocatalysts are in great demand to reduce the overpotential of HER and thereby achieve stable and efficient hydrogen production [5][6][7]. Currently, noble metal-based catalysts, such as Pt, are considered the most efficient classification of electrocatalysts for HER [8], but their commercial application is hindered by natural scarcity and high cost [9][10][11][12]. Therefore, efficient non-noble alternatives, including transition metal alloys and compounds (such as chalcogenides, phosphides, nitrides, borides, and carbides) [8] for HER catalysts have attracted extensive research interests. ...

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Hierarchical-Heterostructured porous intermetallics in Nickel-Cobalt-Aluminum alloys as efficient electrocatalysts for hydrogen evolution

... This open nanoflower-like structure can expose more specific surface area, which leads to more active sites and thus facilitates the improvement of electrocatalytic performance [16]. The powder X-ray diffraction (XRD) patterns (Figure S1 b) show that all diffraction peaks of Ni@C and NiMC are consistent with the standard card of Ni (JCPDS card number 04-0850), indicating that the doping of Fe, Co and Cu did not disturb the main phase of Ni@C but only formed a thin layer rich in doped metals on the catalyst surface, which may play a role in enhancing the catalyst properties [43]. The internal structure of NiFeC was analyzed by transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). ...

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Modulating Electronic Structure of Ni/carbon Spherical Nano-superstructures through Transition Metal-doping as Highly Efficient Catalysts for Hydrogen Evolution Reaction

... Urea serves as a crucial feedstock for chemical synthesis and also finds applications in renewable energy-related processes [1][2][3][4][5][6]. The extensive use of urea in chemical synthesis results in large volume of urea-containing waste water, and the urea hydrolysis produces ammonia [1]. ...

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Accumulated charge density at the interface boosts the urea oxidation reaction activity of Ni 3 N/Ni 3 S 2 heterointerface

... [4][5][6][7][8][9] These methods involve the deposition of diverse materials such as metallic nanoparticles (NPs), alloys, metal oxides, hydroxides, layered double hydroxides, sulfides, and phosphides, onto substrates such as nickel foam (NF) through electrodeposition, magnetron sputtering, and drop casting. [10][11][12][13][14][15][16][17][18][19][20] Although these techniques are versatile in their applicability to various substrates, they present challenges in precisely regulating deposition parameters and achieving strong adhesion of the composite materials to the substrates. These limitations can reduce their effectiveness for the precise engineering of working electrodes. ...

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Laser‐driven liquid assembly: Metal‐nanocluster‐decorated Ni(OH) 2 /nickel foam for efficient water electrolysis

... The self-supported electrodes with catalytically active phase in situ grown on the conductive substrates are more desirable for compactness and integration of electrodes than conventional casting methods. [20] For construction of self-supported CoPi, Xu et al [21] reported CoPi nanoparticles supported on nitrogendoped carbon layers by hydrothermal treatment, Liu et al [22] synthesized nanoflakes CoPi supported on nickel foam substrate via a facile hydrothermal/solvothermal process. However, direct growth of the catalytic phase on the substrates often faces the problem of not being able to fully cover, which poses a significant challenge to the long-term stability of the electrode. ...

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Multi‐layer Architecture of Novel Sea Urchin‐like Co‐Hopeite to Boosting Overall Alkaline Water Splitting

... The electrocatalytic activity of NiNPs was used in the oxidation of methanol and water. In this reaction, nickel phosphate nanoparticles showed high catalytic activity compared to platinum counter electrodes [12]. Supercapacitors have been fabricated from diverse materials depending on the type of energy storage and the capacitance required. ...

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One-pot solvothermal synthesis and characterization of highly stable nickel nanoparticles

... Electrochemical impedance spectroscopy (EIS) measurements were performed at an excitation voltage of 5 mV with frequencies from 10 −2 to 10 5 Hz. To assess the electrochemically active surface areas (ECSAs), electrochemical double-layer capacitance (C dl ) was performed using cyclic voltammetry (CV) technology in a non-Faradaic region (0.5-0.6 V vs. RHE) at different scan rates (10,20,30,40, and 50 mV s −1 ). The OER durability was conducted by the chronopotentiometry (CP) at a constant current density of 10 mA cm −2 without iR compensation in 1.0 M KOH, while the LSV curves before and after durability tests were also acquired for comparison. ...

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Immersion-Driven Structural Evolution of NiFeS Nanosheets for Efficient Water Splitting