Synthesis of O,F Co-Modified g-C3N4 for Photocatalytic H2 Evolution Activity Improvement and Corrosion Protection

IF 2.9 4区材料科学 Q2 CRYSTALLOGRAPHY

Crystals Pub Date : 2024-12-09 DOI:10.3390/cryst14121063

Shiyu Zhou, Pei Li, Chunbo Zhang, Yang Wang, Jingting Hu, Ruokun Jia

{"title":"Synthesis of O,F Co-Modified g-C3N4 for Photocatalytic H2 Evolution Activity Improvement and Corrosion Protection","authors":"Shiyu Zhou, Pei Li, Chunbo Zhang, Yang Wang, Jingting Hu, Ruokun Jia","doi":"10.3390/cryst14121063","DOIUrl":null,"url":null,"abstract":"Herein, we report the rational synthesis of porous g-C3N4 co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO2 during thermal polymerization introduces lattice oxygen, forming C–O bonds, while post-treatment with NH4·HF2 establishes C–F bonds. The dual incorporation of O and F elements extends visible light absorption and effectively promotes the separation and transport of photoexcited charge carriers. Consequently, the co-modified g-C3N4 (O,F-g-C3N4) achieves a 13.2-fold increase in H2 evolution rate compared to pristine g-C3N4. This synthesized O,F-g-C3N4 is then dispersed in waterborne polyurethane (WPU) to create an anti-corrosive coating for Q235 carbon steel substrates. Water resistance, mechanical property, and electrochemical characterization analyses reveal that the O,F-g-C3N4/WPU composite coating exhibits remarkable corrosion resistance with a high protection efficiency of 90.23%. This work offers a straightforward approach for developing highly efficient g-C3N4-based photocatalysts and corrosion-resistant coatings.","PeriodicalId":10855,"journal":{"name":"Crystals","volume":"14 12","pages":"1063-1063"},"PeriodicalIF":2.9000,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2073-4352/14/12/1063/pdf?version=1733706011","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crystals","FirstCategoryId":"0","ListUrlMain":"https://doi.org/10.3390/cryst14121063","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CRYSTALLOGRAPHY","Score":null,"Total":0}

引用次数: 3

Abstract

Herein, we report the rational synthesis of porous g-C3N4 co-modified with oxygen (O) and fluorine (F) for the first time. Incorporating colloidal SiO2 during thermal polymerization introduces lattice oxygen, forming C–O bonds, while post-treatment with NH4·HF2 establishes C–F bonds. The dual incorporation of O and F elements extends visible light absorption and effectively promotes the separation and transport of photoexcited charge carriers. Consequently, the co-modified g-C3N4 (O,F-g-C3N4) achieves a 13.2-fold increase in H2 evolution rate compared to pristine g-C3N4. This synthesized O,F-g-C3N4 is then dispersed in waterborne polyurethane (WPU) to create an anti-corrosive coating for Q235 carbon steel substrates. Water resistance, mechanical property, and electrochemical characterization analyses reveal that the O,F-g-C3N4/WPU composite coating exhibits remarkable corrosion resistance with a high protection efficiency of 90.23%. This work offers a straightforward approach for developing highly efficient g-C3N4-based photocatalysts and corrosion-resistant coatings.

查看原文本刊更多论文

O，F共改性g-C3N4的合成及其光催化析氢活性的提高和防腐性能

本文首次报道了氧(O)和氟(F)共改性多孔g-C3N4的合理合成。热聚合过程中加入胶体SiO2引入晶格氧形成C-O键，NH4·HF2处理后形成C-F键。O和F元素的双重掺入扩展了可见光吸收，有效地促进了光激发载流子的分离和输运。因此，共修饰的g-C3N4 （O,F-g-C3N4）的氢气析出率比原始g-C3N4提高了13.2倍。然后将合成的O，F-g-C3N4分散在水性聚氨酯（WPU）中，为Q235碳钢基材创建防腐涂层。耐水性、力学性能和电化学表征分析表明，O，F-g-C3N4/WPU复合涂层具有良好的耐腐蚀性，防护效率高达90.23%。这项工作为开发高效的g- c3n4基光催化剂和耐腐蚀涂层提供了一种直接的方法。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Crystals CRYSTALLOGRAPHYMATERIALS SCIENCE, MULTIDIS-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

4.20

自引率

11.10%

发文量

1527

审稿时长

16.12 days

期刊介绍： Crystals (ISSN 2073-4352) is an open access journal that covers all aspects of crystalline material research. Crystals can act as a reference, and as a publication resource, to the community. It publishes reviews, regular research articles, and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on article length. Full experimental details must be provided to enable the results to be reproduced. Crystals provides a forum for the advancement of our understanding of the nucleation, growth, processing, and characterization of crystalline materials. Their mechanical, chemical, electronic, magnetic, and optical properties, and their diverse applications, are all considered to be of importance.