Synergistic enhancement of photocatalytic degradation performance in Cl-g-C3N4/Bi3Al0.06O10 through nitrogen vacancies and S-scheme heterojunctions

IF 4.4 3区化学 Q1 CHEMISTRY, INORGANIC & NUCLEAR

Inorganic Chemistry Communications Pub Date : 2024-11-06 DOI:10.1016/j.inoche.2024.113430

Fu Ma , Xiao-shan Miao , Zheng-bing Han , Zhe Yu , Yan Zhou , Xu Li , Hong-jian Zhao

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Abstract

The ternary Aurivilius compound Bi_xAl_yO_z was prepared via a solvothermal technique, with the specific composition determined to be Bi₃Al_0.06O₁₀ using inductively coupled plasma optical emission spectroscopy. A Cl-g-C₃N₄/Bi₃Al_0.06O₁₀ heterojunction was constructed using the solvothermal coprecipitation method. Notably, the introduction of Cl-g-C₃N₄ with Bi₃Al_0.06O₁₀ significantly enhanced the decolorization efficiency of both Rhodamine B (RhB) and methylene blue (MB). Specifically, the Cl-g-C₃N₄/Bi₃Al_0.06O₁₀ composite with a mass ratio of 1:4 achieved a removal rate of 96.81 % for RhB within 20 min and 96.70 % for MB within 180 min. This is mainly attributed to the synergistic effects of N vacancies and the formation of S-scheme heterojunction in Cl-g-C₃N₄/Bi₃Al_0.06O₁₀. These features facilitate the effective separation of photogenerated electrons and holes while expanding the light absorption range. This study not only presents a novel method for synthesizing photocatalysts with N vacancies but also offers a new approach for treating dye-contaminated wastewater.

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通过氮空位和 S 型异质结协同提高 Cl-g-C3N4/Bi3Al0.06O10 的光催化降解性能

通过溶热技术制备了三元 Aurivilius 化合物 BixAlyOz，并利用电感耦合等离子体光发射光谱确定其具体成分为 Bi3Al0.06O10。利用溶热共沉淀法构建了 Cl-g-C3N4/Bi3Al0.06O10 异质结。值得注意的是，Cl-g-C3N4 与 Bi3Al0.06O10 的引入显著提高了罗丹明 B（RhB）和亚甲基蓝（MB）的脱色效率。具体而言，质量比为 1:4 的 Cl-g-C3N4/Bi3Al0.06O10 复合材料在 20 分钟内对 RhB 的去除率达到 96.81%，在 180 分钟内对 MB 的去除率达到 96.70%。这主要归功于 Cl-g-C3N4/Bi3Al0.06O10 中 N 空位的协同效应和 S 型异质结的形成。这些特征有助于有效分离光生电子和空穴，同时扩大光吸收范围。这项研究不仅提出了一种合成具有 N 空位的光催化剂的新方法，还为处理受染料污染的废水提供了一种新途径。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Inorganic Chemistry Communications 化学-无机化学与核化学

CiteScore

5.50

自引率

7.90%

发文量

1013

审稿时长

53 days

期刊介绍： Launched in January 1998, Inorganic Chemistry Communications is an international journal dedicated to the rapid publication of short communications in the major areas of inorganic, organometallic and supramolecular chemistry. Topics include synthetic and reaction chemistry, kinetics and mechanisms of reactions, bioinorganic chemistry, photochemistry and the use of metal and organometallic compounds in stoichiometric and catalytic synthesis or organic compounds.