Construction of hierarchical ZnIn2S4@PCN-224 heterojunction for boosting photocatalytic performance in hydrogen production and degradation of tetracycline hydrochloride

IF 21.1 1区化学 Q1 CHEMISTRY, PHYSICAL

Applied Catalysis B: Environmental Pub Date : 2021-05-05 DOI:10.1016/j.apcatb.2020.119762

Pengxia Jin (Methodology) , Lei Wang (Supervision) , Xiaolei Ma (Conceptualization) , Rui Lian (Methodology) , Jingwei Huang (Investigation) , Houde She (Investigation) , Mingyi Zhang (Investigation) , Qizhao Wang (Supervision)

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引用次数: 159

Abstract

As a typical member of sulfide family, ZnIn₂S₄ bears impressive activity in photocatalysis. Nonetheless, egregious recombination of photo-excited electron and hole pairs confines its practical usage. In this study, PCN-224, a metal organic framework (MOF) composed of porphyrin linkers and Zr clusters, is employed to establish a novel hierarchical structured ZnIn₂S₄@PCN-224 via a solvothermal method. These as-prepared composites are further evaluated by visible-light-driven photocatalysis and able to present steady performance. The optimized ZnIn₂S₄@PCN-224 has a hydrogen production rate of 0.284 mmol h⁻¹ in absence of Pt, higher than many contrastive ZnIn₂S₄-based photocatalysts even in assistance of Pt cocatalyst. Besides, it is able to dominate the degradation of tetracycline hydrochloride (TCH), giving 99.9 % pollutant removal within 60 min, about 4.7 times higher than that catalyzed by ZnIn₂S₄. It is supposed that the great improvement in photocatalysis is ascribable to the establishment of Z-scheme junction between ZnIn₂S₄ and PCN-224.

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构建层次化ZnIn2S4@PCN-224异质结提高盐酸四环素产氢降解光催化性能

ZnIn2S4作为硫化物家族的典型成员，具有良好的光催化活性。然而，令人震惊的光激发电子和空穴对的重组限制了它的实际应用。本研究利用卟啉连接剂和Zr簇组成的金属有机骨架(MOF) PCN-224，通过溶剂热法建立了一种新型的层次结构ZnIn2S4@PCN-224。这些制备的复合材料通过可见光驱动光催化进一步评估，能够呈现稳定的性能。优化后的ZnIn2S4@PCN-224在不含Pt的情况下产氢率为0.284 mmol h−1，即使在有Pt辅助催化剂的情况下也高于许多对照znin2s4光催化剂。此外，它对盐酸四环素(TCH)的降解具有主导作用，在60 min内污染物去除率达到99.9%，比ZnIn2S4催化的去除率提高约4.7倍。推测ZnIn2S4与PCN-224之间建立Z-scheme结是ZnIn2S4光催化性能显著提高的原因。

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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.