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Rational Design and Construction of Graphdiyne (CnH2n–2) Based NiMoO4/GDY/CuO in Situ XPS Proved Double S-Scheme Heterojunctions for Photocatalytic Hydrogen Production
Langmuir ( IF 3.7 ) Pub Date : 2023-06-30 , DOI: 10.1021/acs.langmuir.3c00955 Cheng Yang 1 , Xuanpu Wang 1 , Teng Li 1 , Youlin Wu 1 , Zhiliang Jin 1
Langmuir ( IF 3.7 ) Pub Date : 2023-06-30 , DOI: 10.1021/acs.langmuir.3c00955 Cheng Yang 1 , Xuanpu Wang 1 , Teng Li 1 , Youlin Wu 1 , Zhiliang Jin 1
Affiliation
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As a new two-dimensional (2D) carbon hybrid material, graphdiyne has attracted much attention due to its good conductivity, adjustable electronic structure, and special electron transfer enhancement properties. In this work, graphdiyne/CuO and NiMoO4/GDY/CuO composite catalysts were prepared by cross coupling method and high temperature annealing method. The CuI introduced by clever design not only acts as a catalytic coupling but also as a precursor of CuO. The CuO produced by the postprocessing improves the inefficient charge separation of graphdiyne and provides a good acceptor for the consumption of unwanted holes. The good conductivity and strong reduction ability of graphdiyne play key roles in the performance improvement of the composite catalyst. Under the dual evidence of XPS and in situ XPS, the charge transfer mode of double S-scheme heterojunction with graphdiyne as the active site of hydrogen evolution is constructed reasonably, which not only gives full play to the performance advantages of graphdiyne but also effectively improves the separation efficiency of photogenerated carriers. In this study, a clean and efficient multicomponent system was constructed by graphdiyne, which opened up a broad application prospect in the field of photocatalytic hydrogen production.
中文翻译：
合理设计和构建基于石墨炔 (CnH2n–2) 的 NiMoO4/GDY/CuO 原位 XPS 证明用于光催化制氢的双 S 型异质结
石墨炔作为一种新型二维（2D）碳杂化材料，由于其良好的导电性、可调节的电子结构和特殊的电子转移增强性能而备受关注。在这项工作中，石墨二炔/CuO 和 NiMoO 4采用交叉偶联法和高温退火法制备了/GDY/CuO复合催化剂。通过巧妙设计引入的 CuI 不仅充当催化偶联剂，而且还充当 CuO 的前体。后处理产生的 CuO 改善了石墨二炔的低效电荷分离，并为消耗不需要的空穴提供了良好的受体。石墨二炔良好的导电性和强还原能力对复合催化剂的性能提升起到关键作用。在XPS和原位XPS的双重证据下，合理构建了以石墨二炔为析氢活性位点的双S型异质结的电荷转移模式，不仅充分发挥了石墨二炔的性能优势，而且有效提高了光生载流子的分离效率。本研究构建了石墨二炔清洁高效的多组分体系，在光催化制氢领域开辟了广阔的应用前景。
更新日期：2023-06-30
中文翻译：
合理设计和构建基于石墨炔 (CnH2n–2) 的 NiMoO4/GDY/CuO 原位 XPS 证明用于光催化制氢的双 S 型异质结
石墨炔作为一种新型二维（2D）碳杂化材料，由于其良好的导电性、可调节的电子结构和特殊的电子转移增强性能而备受关注。在这项工作中，石墨二炔/CuO 和 NiMoO 4采用交叉偶联法和高温退火法制备了/GDY/CuO复合催化剂。通过巧妙设计引入的 CuI 不仅充当催化偶联剂，而且还充当 CuO 的前体。后处理产生的 CuO 改善了石墨二炔的低效电荷分离，并为消耗不需要的空穴提供了良好的受体。石墨二炔良好的导电性和强还原能力对复合催化剂的性能提升起到关键作用。在XPS和原位XPS的双重证据下，合理构建了以石墨二炔为析氢活性位点的双S型异质结的电荷转移模式，不仅充分发挥了石墨二炔的性能优势，而且有效提高了光生载流子的分离效率。本研究构建了石墨二炔清洁高效的多组分体系，在光催化制氢领域开辟了广阔的应用前景。
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