Synthesis of Bi6O6(OH)3(NO3)3·1.5H2O/ZnO composite material with excellent photocatalytic hydrogen production performance

IF 4.5 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

International Journal of Smart and Nano Materials Pub Date : 2021-04-03 DOI:10.1080/19475411.2021.1933251

Lingyi Wang, Shichang Sun, Ziqing Zhong, Qingguang Gong, Xingpeng Jiang, Weiming Zhou, Liwei Wang, Ming-Yun Lin, Zhanhui Yuan

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引用次数: 2

Abstract

ABSTRACT The heterojunction effect can effectively improve the separation efficiency of the photocatalyst’s photo-generated electron and hole pairs, thereby greatly improving the photocatalytic hydrogen production performance of the photocatalyst. In this paper, Bi6O6(OH)3(NO3)3 · 1.5H2O (BBN) and ZnO are used to construct and synthesize Bi6O6(OH)3(NO3)3 · 1.5H2O/ZnO (BBN/ZnO) heterojunction photocatalyst. Under UV-vis light irradiation, the BBN/ZnO composite could generate H2 with a rate of 28.66 μmol·g−1·h−1, which is higher than pure BBN (0.92 μmol·g−1·h−1) and ZnO (6.54 μmol·h−1·g−1) at around 31.1 and 4.4 times, respectively. Moreover, the experimental results found that the composite still exhibits excellent photocatalytic activity and maintains a high and stable activity in the 12-hour experiment with 3 cycles. The possible mechanism to enhance the photocatalytic behavior is attributed to the expanded light absorption range, reduced surface migration resistance, and inhibited recombination of photo-generated electron and hole pairs. Graphical abstract

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具有优异光催化制氢性能的Bi6O6（OH）3（NO3）3·1.5H2O/ZnO复合材料的合成

摘要异质结效应可以有效提高光催化剂光生电子和空穴对的分离效率，从而大大提高光催化剂的光催化制氢性能。本文以Bi6O6（OH）3（NO3）3·1.5H2O（BBN）和ZnO为原料，构建并合成了Bi6O3（OH）3.1.5H2O/ZnO（BBN/ZnO）异质结光催化剂。在紫外-可见光照射下，BBN/ZnO复合材料能以28.66μmol·g−1·h−1的速率产生H2，比纯BBN（0.92μmol·g-1·h–1）和ZnO（6.54μmol·h−l）分别高出31.1和4.4倍左右。此外，实验结果发现，该复合材料仍然表现出优异的光催化活性，并在3次循环的12小时实验中保持了高而稳定的活性。增强光催化行为的可能机制归因于扩大的光吸收范围、降低的表面迁移电阻以及抑制光生电子和空穴对的复合。图形摘要

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来源期刊

International Journal of Smart and Nano Materials MATERIALS SCIENCE, MULTIDISCIPLINARY-

CiteScore

6.30

自引率

5.10%

发文量

审稿时长

11 weeks

期刊介绍： The central aim of International Journal of Smart and Nano Materials is to publish original results, critical reviews, technical discussion, and book reviews related to this compelling research field: smart and nano materials, and their applications. The papers published in this journal will provide cutting edge information and instructive research guidance, encouraging more scientists to make their contribution to this dynamic research field.