Surface Plasmon Resonance-enhanced photocatalytic water-splitting for improved visible-light-driven H2 generation using Ag-modified twin crystal Cd0.5Zn0.5S photocatalysts

IF 3.4 3区化学 Q2 CHEMISTRY, PHYSICAL

Catalysis Communications Pub Date : 2024-01-06 DOI:10.1016/j.catcom.2024.106841

Mohammed Alfatih Hamid , Yasar Zengin , Ismail Boz

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Abstract

Photocatalytic hydrogen generation is a viable option among strategies to mitigate the energy crisis. This study investigates visible-light-driven H₂ generation using Ag-doped twin crystal Cd_xZn_1-xS photocatalysts synthesized through a solvothermal process. Ag nanoparticles induce Surface Plasmon Resonance (SPR), enhancing photo-response. Twin crystal 1 wt% Ag-doped Cd_0.5Zn_0.5S photocatalyst exhibits significant H₂ evolution at 2458 μmol/g_cat.h under visible light. Enhanced performance is attributed to dual-function Ag nanoparticles: SPR-enhanced light absorption, efficient electron transfer to the Cd_0.5Zn_0.5S conduction band, and the twin crystal structure facilitating electron-hole pair separation. Emphasis on optimal Ag loading and the crucial role of SPR in elevating photocatalyst efficiency.

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利用银改性孪晶 Cd0.5Zn0.5S 实现表面等离子共振增强型光催化水分离，从而提高可见光驱动的 H2 生成率

光催化制氢是缓解能源危机的一种可行方法。本研究采用溶热法合成的掺银双晶 CdxZn1-xS 光催化剂，研究了可见光驱动的氢气生成。银纳米粒子可诱导表面等离子体共振（SPR），从而增强光响应。在可见光下，掺杂 1 wt% Ag 的双晶 Cd0.5Zn0.5S 光催化剂在 2458 μmol/gcat.h 的条件下表现出显著的 H2 演化能力。性能的增强归功于具有双重功能的 Ag 纳米粒子：SPR 增强的光吸收、向 Cd0.5Zn0.5S 传导带的高效电子转移以及有利于电子-空穴对分离的孪晶结构。重点是最佳的银负载和 SPR 在提高光催化剂效率方面的关键作用。

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来源期刊

Catalysis Communications 化学-物理化学

CiteScore

6.20

自引率

2.70%

发文量

183

审稿时长

46 days

期刊介绍： Catalysis Communications aims to provide rapid publication of significant, novel, and timely research results homogeneous, heterogeneous, and enzymatic catalysis.