Photothermal interface with high-adhesive superhydrophobicity to construct vapor splitting module for hydrogen evolution from seawater

IF 20.2 1区化学 Q1 CHEMISTRY, PHYSICAL Applied Catalysis B: Environmental Pub Date : 2024-01-17 DOI:10.1016/j.apcatb.2024.123743

Wei Wang , Yanan Li , Xiao Yu , Li Zhang , Yan Wang , Haichuan He , Henan Zhao , Wansong Chen , Jianghua Li , Liu Deng , You-Nian Liu

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Abstract

Direct photocatalytic hydrogen evolution from seawater is an appealing approach to migrate the crisis of carbon emissions. However, limited solar energy utilization and catalyst poisoning are two obstacles to the hydrogen evolution from seawater. Herein, a microneedle module that integrates with solar-driven vapor generation and vapor splitting to realize directly solar-driven seawater splitting has been designed. The photothermal pedestal with high-adhesive superhydrophobicity not only provides sufficient vapor generation, but also isolates harmful substances such as salt in seawater from photocatalysts. Besides, the pedestal with superhydrophobicity and photothermal effect can provide high-temperature gas–solid reaction sites for photocatalyst microneedles to thermodynamically promote the desorption of hydrogen. Thus, the integrated module exhibits a remarkable hydrogen evolution rate of 200.5 mmol g^–1 h^–1 in seawater. The rational design of multifunctional interfaces opens a new window for high-efficiency direct seawater splitting to hydrogen evolution.

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具有高粘附性超疏水性的光热界面，用于构建海水氢气进化的水汽分离模块

从海水中直接进行光催化氢气进化是解决碳排放危机的一种有吸引力的方法。然而，太阳能利用率有限和催化剂中毒是海水制氢的两大障碍。在此，我们设计了一种集太阳能驱动的水汽生成和水汽分裂于一体的微针模块，以直接实现太阳能驱动的海水分裂。具有高粘附性超疏水性的光热基座不仅能提供充足的水汽生成，还能将海水中的盐分等有害物质与光催化剂隔离。此外，具有超疏水性和光热效应的基座还能为光催化剂微针提供高温气固反应场所，从热力学角度促进氢气解吸。因此，该集成模块在海水中的氢进化速率高达 200.5 mmol g-1 h-1。多功能界面的合理设计为高效直接海水分离制氢打开了一扇新窗口。

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来源期刊

Applied Catalysis B: Environmental 环境科学-工程：化工

CiteScore

38.60

自引率

6.30%

发文量

1117

审稿时长

24 days

期刊介绍： Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including: 1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources. 2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes. 3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts. 4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells. 5.Catalytic reactions that convert wastes into useful products. 6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts. 7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems. 8.New catalytic combustion technologies and catalysts. 9.New catalytic non-enzymatic transformations of biomass components. The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.