{"title":"Construction of WO3/g-C3N4 heterojunction via cold plasma for enhanced visible-light-driven photocatalysis","authors":"Likang Wang, Yuxin Li, Zhao Wang","doi":"10.1016/j.matlet.2025.138413","DOIUrl":null,"url":null,"abstract":"<div><div>In this study, WO<sub>3</sub>/g-C<sub>3</sub>N<sub>4</sub> composites were synthesized using a cold plasma method. The high-energy electrons generated by cold plasma facilitated the formation of nitrogen vacancies in g-C<sub>3</sub>N<sub>4</sub> and oxygen vacancies in WO<sub>3</sub>. These defect sites enhanced the interfacial interactions between WO<sub>3</sub> and g-C<sub>3</sub>N<sub>4</sub>, enabling the construction of efficient WO<sub>3</sub>/g-C<sub>3</sub>N<sub>4</sub> heterojunctions. The formation of the heterojunctions resulted in a reduced band gap and improved separation efficiency of photogenerated electron-hole pairs, significantly enhancing the photocatalytic degradation performance under visible light irradiation. The composite achieved an exceptional Rhodamine B degradation rate of 96 % within 40 min, with reaction rates 5.9 and 22.8 times higher than those of g-C<sub>3</sub>N<sub>4</sub> and WO<sub>3</sub>, respectively.</div></div>","PeriodicalId":384,"journal":{"name":"Materials Letters","volume":"389 ","pages":"Article 138413"},"PeriodicalIF":2.7000,"publicationDate":"2025-06-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Letters","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0167577X25004422","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/17 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
In this study, WO3/g-C3N4 composites were synthesized using a cold plasma method. The high-energy electrons generated by cold plasma facilitated the formation of nitrogen vacancies in g-C3N4 and oxygen vacancies in WO3. These defect sites enhanced the interfacial interactions between WO3 and g-C3N4, enabling the construction of efficient WO3/g-C3N4 heterojunctions. The formation of the heterojunctions resulted in a reduced band gap and improved separation efficiency of photogenerated electron-hole pairs, significantly enhancing the photocatalytic degradation performance under visible light irradiation. The composite achieved an exceptional Rhodamine B degradation rate of 96 % within 40 min, with reaction rates 5.9 and 22.8 times higher than those of g-C3N4 and WO3, respectively.
期刊介绍：
Materials Letters has an open access mirror journal Materials Letters: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
Materials Letters is dedicated to publishing novel, cutting edge reports of broad interest to the materials community. The journal provides a forum for materials scientists and engineers, physicists, and chemists to rapidly communicate on the most important topics in the field of materials.
Contributions include, but are not limited to, a variety of topics such as:
• Materials - Metals and alloys, amorphous solids, ceramics, composites, polymers, semiconductors
• Applications - Structural, opto-electronic, magnetic, medical, MEMS, sensors, smart
• Characterization - Analytical, microscopy, scanning probes, nanoscopic, optical, electrical, magnetic, acoustic, spectroscopic, diffraction
• Novel Materials - Micro and nanostructures (nanowires, nanotubes, nanoparticles), nanocomposites, thin films, superlattices, quantum dots.
• Processing - Crystal growth, thin film processing, sol-gel processing, mechanical processing, assembly, nanocrystalline processing.
• Properties - Mechanical, magnetic, optical, electrical, ferroelectric, thermal, interfacial, transport, thermodynamic
• Synthesis - Quenching, solid state, solidification, solution synthesis, vapor deposition, high pressure, explosive
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