Synthesis of Composite Titanate Photocatalyst via Molten Salt Processing and Its Enhanced Photocatalytic Properties

IF 4.4 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Nanomaterials Pub Date : 2023-11-14 DOI:10.3390/nano13222944

Yan Cheng, Chenxi Li, Shindume Lomboleni Hamukwaya, Guangdong Huang, Zengying Zhao

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引用次数: 0

Abstract

Photocatalysis plays a pivotal role in environmental remediation and energy production and improving the efficiency of photocatalysts, yet enhancing its efficiency remains a challenge. Titanate has been claimed to be a very promising material amongst various photocatalysts in recent years. In this work, a novel composite photocatalyst of sodium titanate and potassium titanate was synthesized via a simple hydrothermal and molten salt calcination method. Low melting point nitrate was added in the calcination process, which helps reduce the calcination temperature. The as-prepared composite sample showed excellent photocatalytic performance compared with commercial P25 in the visible light range. According to the characterization of XRD, SEM, TEM, BET, UV–Vis, and photocatalytic property testing, the composite’s photocatalytic performance results are due to the dual optimization brought about by the layered structure and composite of titanium salts forming a heterojunction. We believe that the composite has significant application potential for the use of titanate in the field of photocatalysis. Notably, this study employed well-documented synthesis methods and adhered to established protocols for experimental procedures.

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熔盐法合成复合钛酸盐光催化剂及其增强光催化性能

光催化在环境修复和能源生产中发挥着关键作用，提高光催化剂的效率是一个挑战。近年来，钛酸盐被认为是各种光催化剂中非常有前途的材料。本文采用简单的水热和熔盐煅烧法制备了一种新型钛酸钠和钛酸钾复合光催化剂。在煅烧过程中加入低熔点硝酸盐，有利于降低煅烧温度。与商用P25相比，制备的复合样品在可见光范围内具有优异的光催化性能。通过XRD、SEM、TEM、BET、UV-Vis表征和光催化性能测试，复合材料的光催化性能结果是由于钛盐层状结构和复合形成异质结所带来的双重优化。我们认为该复合材料在钛酸盐光催化领域具有重要的应用潜力。值得注意的是，本研究采用了记录良好的合成方法，并遵守了既定的实验程序协议。

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

Nanomaterials NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.50

自引率

9.40%

发文量

3841

审稿时长

14.22 days

期刊介绍： Nanomaterials (ISSN 2076-4991) is an international and interdisciplinary scholarly open access journal. It publishes reviews, regular research papers, communications, and short notes that are relevant to any field of study that involves nanomaterials, with respect to their science and application. Thus, theoretical and experimental articles will be accepted, along with articles that deal with the synthesis and use of nanomaterials. Articles that synthesize information from multiple fields, and which place discoveries within a broader context, will be preferred. There is no restriction on the length of the papers. Our aim is to encourage scientists to publish their experimental and theoretical research in as much detail as possible. Full experimental or methodical details, or both, must be provided for research articles. Computed data or files regarding the full details of the experimental procedure, if unable to be published in a normal way, can be deposited as supplementary material. Nanomaterials is dedicated to a high scientific standard. All manuscripts undergo a rigorous reviewing process and decisions are based on the recommendations of independent reviewers.