Web文章信息PtCo-PtSn/C异质结调控Pt的d能带中心增强氧化原性能 第一作者：陈金丽 通讯作者：尹诗斌* 单位：广西大学 研究背景 ... WebAug 30, 2024 · Combining the core-shell structure with the optimization of surface composition and structure in the shell is a fantastic strategy to enhance the electrocatalytic performances. Here, we synthesized trimetallic Au@PtxSny core-shell nanoparticles (NPs) with tunable composition and structure of Pt-Sn alloyed shells. Impressively, the …
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Web豆丁网是面向全球的中文社会化阅读分享平台，拥有商业,教育,研究报告,行业资料,学术论文,认证考试,星座,心理学等数亿实用 ... WebTuning d‐Band Center of Pt by PtCo‐PtSn Heterostructure for Enhanced Oxygen Reduction Reaction Performance. J Chen, G Qian, B Chu, Z Jiang, K Tan, L Luo, B Li, S Yin. Small 18 (12), 2106773, 2024. 18: 2024: The system can't perform …
WebJun 15, 2024 · Four types of high-symmetry adsorption sites including top (T), bridge (B), fcc (F), and hcp (H) on the Pt(1 1 1) surface (Fig. 1 a), and seven types of high-symmetry adsorption sites including T Pt, T Sn, B Pt2, B PtSn, H Pt2Sn, H Pt3, F Pt2Sn, and F Pt3 on the Pt 3 Sn(1 1 1) surface (Fig. 1 b) are included in DFT structure calculations.The optimal … WebJan 27, 2024 · Water dissociation process is generally regarded as the rate-limiting step for alkaline hydrogen evolution reaction (HER), and severely inhibits the catalytic efficiency of …
WebDifferent from selective chemical etching or erosion, 10,33 the formation of the as-prepared PtCo ERD NCs in this case probably undergoes a surface capping process, such as the reported excavated cubic PtSn NCs formed in the presence of PVP, and the excavated octahedral PtCo formed with the selective capping of Br − ions. 31,32 WebA PtCo alloy catalyst was prepared by thermal diffusion of Co encapsulated with thin N-doped carbon layers on graphitic carbon into a Pt lattice (PtCo/NGC). The Co diffused up to the near-Pt surface and resulted in an intermetallic PtCo structure without the leaching process. The intermetallic PtCo structure
WebSep 30, 2024 · Increasing the platinum utilization efficiency is the key to the advancement and broad dissemination of proton-exchange-membrane fuel cells (PEMFCs). Central to the task is the creation of highly active and durable Pt-based catalysts for the cathodic oxygen reduction reaction (ORR), which demands a comprehensive understanding of the ORR …
WebJun 18, 2024 · Interface engineering has gradually attracted substantial research interest in constructing active bifunctional catalysts toward urea electrolysis. The fundamental understanding of the crystallinity transition of the components on both sides of the interface is extremely significant for realizing controllable construction of catalysts through … pbr3 pyridine reactionWebDec 6, 2024 · Efficient generation of hydrogen from water-splitting is an underpinning chemistry to realize the hydrogen economy. Low cost, transition metals such as nickel and iron-based oxides/hydroxides have ... scripture live and move and have our beingscripture little children love one anotherWebMar 9, 2024 · It should be noted that PtAg [19, 20], PtSn , PtFe , PtCo , PtMn , and PtRu have been proposed as effective catalysts for electro-oxidation of different fuels. These proposed Pt-based electrocatalysts have been shown to have enhanced activity and improved stability against the poisoning of adsorbed intermediate species on their surface during ... pbr3 with alcoholWebJan 22, 2024 · Herein, a PtCo@PtSn heterojunction with good hydrogen evolution reaction (HER) performance in pH‐universal electrolytes is designed and prepared by combining … scripture little by littleWebFor instance, the formation of high-index PtCo, PtSn, and PtMn nanocrystals has also been achieved using Cl − /O 2 as oxidative etchant. 118,119 In the synthesis of Pt 3 Co nanocubes, the introduction of deionised water (DI water) was vital for the formation of concave architecture . 118 DI water increased the amount of solubilised O 2 and so ... scripture little is much kjvWebJan 27, 2024 · Water dissociation process is generally regarded as the rate-limiting step for alkaline hydrogen evolution reaction (HER), and severely inhibits the catalytic efficiency of Pt based catalysts. To overcome this problem, the in-situ constructed interfaces of Pt-Co alloy and amorphous cobalt oxide (CoOx) on the carbon powder are designed. The amorphous … pbr3 weight