All-solid-state red phosphorus/RGO/WO3 Z-scheme heterostructure for photocatalytic overall water splitting

IF 8.1 1区工程技术 Q1 ENGINEERING, CHEMICAL

Separation and Purification Technology Pub Date : 2024-10-16 DOI:10.1016/j.seppur.2024.130117

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引用次数: 0

Abstract

Red phosphorus’s (Red P) photocatalytic overall water splitting activity is limited by rapid charge recombination. In this case, Red P/RGO/WO₃, an all-solid-state Z-scheme heterostructure, was created by simply dispersing, mixing, and heating Red P, WO₃, and graphene oxide (GO). Among them, Reduced GO (RGO) facilitated the Z-scheme charge transmission between Red P and WO₃. Achieving the space separation between electrons stored in Red P’s conduction band and holes accumulated in WO₃′s valence band would prolong the lifespan of photogenerated carriers and increase their redox capacity, which will increase photocatalytic activity. When exposed to visible light, Red P/RGO/WO₃ demonstrated an effective overall water splitting activity, producing 287.00 μmol h⁻¹ g⁻¹ of H₂, which is around 2.5 times more than Red P. This study constructs Z-scheme heterostructures as a possible means of enhancing Red P’s photocatalytic overall water splitting activity.

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用于光催化整体水分离的全固态红磷/RGO/WO3 Z 型异质结构

红磷（Red P）的光催化整体水分离活性受到电荷快速重组的限制。在这种情况下，通过简单地分散、混合和加热红磷、WO3 和氧化石墨烯 (GO)，创建了全固态 Z 型异质结构--红磷/RGO/WO3。其中，还原 GO（RGO）促进了红磷和 WO3 之间的 Z 型电荷传输。实现红磷导带中存储的电子与 WO3 价带中积累的空穴之间的空间隔离，可延长光生载流子的寿命并提高其氧化还原能力，从而提高光催化活性。当暴露在可见光下时，Red P/RGO/WO3 显示出有效的整体水分离活性，可产生 287.00 μmol h-1 g-1 的 H2，是 Red P 的 2.5 倍左右。

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来源期刊

Separation and Purification Technology 工程技术-工程：化工

CiteScore

14.00

自引率

12.80%

发文量

2347

审稿时长

43 days

期刊介绍： Separation and Purification Technology is a premier journal committed to sharing innovative methods for separation and purification in chemical and environmental engineering, encompassing both homogeneous solutions and heterogeneous mixtures. Our scope includes the separation and/or purification of liquids, vapors, and gases, as well as carbon capture and separation techniques. However, it's important to note that methods solely intended for analytical purposes are not within the scope of the journal. Additionally, disciplines such as soil science, polymer science, and metallurgy fall outside the purview of Separation and Purification Technology. Join us in advancing the field of separation and purification methods for sustainable solutions in chemical and environmental engineering.