The strategy of copper oxide control ammonia atmosphere constructs S-scheme g-C3N4 heterojunction photocatalyst for photocatalytic hydrogen evolution

IF 4.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Colloids and Surfaces A: Physicochemical and Engineering Aspects Pub Date : 2024-11-14 DOI:10.1016/j.colsurfa.2024.135765

Yizhen Wang, Ruoyang Han, Qingchao Liu, Jianshe Wang

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引用次数: 0

Abstract

Graphite carbon nitride (g-C₃N₄) is a promising candidate for photocatalytic hydrogen evolution, but only shows mediocre activity due to insufficient active sites and sluggish charge transfer. Herein, we assembled 1D/0D holey sulfur doped rectangular hollow g-C₃N₄ nanotubes (HSCNT)/CdS S-scheme heterojunction via the strategy of copper oxide control ammonia atmosphere and in-situ deposition method. Advanced characterization results suggested that copper oxide plays an important role in morphology regulation to increase the active site, and S-scheme heterojunction can efficiently promote charge separation through their specially coupled heterogeneous interface. As a result, HSCNT/CdS exhibited dramatically improved photocatalytic hydrogen production at 68-fold enhancement compared to bulk g-C₃N₄ (BCN). The integrated strategy may offer a unique example for the rational combination morphology regulation of carbon nitride and heterogeneous structure construction.

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氧化铜控制氨气氛的策略构建了光催化氢进化的 S 型 g-C3N4 异质结光催化剂

氮化石墨（g-C3N4）是一种很有前景的光催化氢气进化候选材料，但由于活性位点不足和电荷转移迟缓，其活性表现平平。在此，我们通过氧化铜控制氨气气氛和原位沉积法组装了 1D/0D 孔硫掺杂矩形空心 g-C3N4 纳米管（HSCNT）/CdS S 型异质结。先进的表征结果表明，氧化铜在调节形貌以增加活性位点方面发挥了重要作用，而 S 型异质结通过其特殊耦合的异质界面可有效促进电荷分离。因此，HSCNT/CdS 的光催化制氢能力与块状 g-C3N4（BCN）相比显著提高了 68 倍。该集成策略为氮化碳的合理组合形态调节和异质结构构建提供了一个独特的范例。

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来源期刊

Colloids and Surfaces A: Physicochemical and Engineering Aspects 化学-物理化学

CiteScore

8.70

自引率

9.60%

发文量

2421

审稿时长

56 days

期刊介绍： Colloids and Surfaces A: Physicochemical and Engineering Aspects is an international journal devoted to the science underlying applications of colloids and interfacial phenomena. The journal aims at publishing high quality research papers featuring new materials or new insights into the role of colloid and interface science in (for example) food, energy, minerals processing, pharmaceuticals or the environment.