Construction of a Novel Solar-Light-Driven Bismuth Titanate/Barium Titanate Photocatalyst for Significantly Enhanced Purification of Nitric Oxide.

IF 3.3 3区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Chemistry - An Asian Journal Pub Date : 2025-06-13 DOI:10.1002/asia.202500651

Wei Zhao, Dingwen Zhang, Wang Zhao, Qian Wang, Aijian Wang, Danhong Shang, Qin Zhong

{"title":"Construction of a Novel Solar-Light-Driven Bismuth Titanate/Barium Titanate Photocatalyst for Significantly Enhanced Purification of Nitric Oxide.","authors":"Wei Zhao, Dingwen Zhang, Wang Zhao, Qian Wang, Aijian Wang, Danhong Shang, Qin Zhong","doi":"10.1002/asia.202500651","DOIUrl":null,"url":null,"abstract":"Photocatalytic denitrification is a promising approach for environmental remediation and solar energy conversion. In this study, a series of Bi2Ti2O7/BaTiO3 heterojunctions were synthesized via hydrothermal method, demonstrating superior photocatalytic NO removal efficiency (94%) compared to individual components. Comprehensive characterizations confirmed the formation of a tightly coupled heterojunction with enhanced visible-light absorption and charge separation. Optical and electrochemical analyses revealed that the composite facilitates efficient electron-hole separation (supported by reduced PL intensity and lower charge-transfer resistance in EIS) while retaining strong redox potentials, consistent with an S-scheme charge-transfer mechanism. Additionally, the increased surface area (BET) and porosity further promote reactant adsorption. Trapping experiments and electron paramagnetic resonance (EPR) confirmed that e⁻, h⁺, and ·O2⁻ are key reactive species. The synergistic effects of improved charge dynamics, optimized light utilization, and interfacial electron transfer collectively contribute to the enhanced photocatalytic performance.","PeriodicalId":145,"journal":{"name":"Chemistry - An Asian Journal","volume":" ","pages":"e00651"},"PeriodicalIF":3.3000,"publicationDate":"2025-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chemistry - An Asian Journal","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1002/asia.202500651","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

Photocatalytic denitrification is a promising approach for environmental remediation and solar energy conversion. In this study, a series of Bi₂Ti₂O₇/BaTiO₃ heterojunctions were synthesized via hydrothermal method, demonstrating superior photocatalytic NO removal efficiency (94%) compared to individual components. Comprehensive characterizations confirmed the formation of a tightly coupled heterojunction with enhanced visible-light absorption and charge separation. Optical and electrochemical analyses revealed that the composite facilitates efficient electron-hole separation (supported by reduced PL intensity and lower charge-transfer resistance in EIS) while retaining strong redox potentials, consistent with an S-scheme charge-transfer mechanism. Additionally, the increased surface area (BET) and porosity further promote reactant adsorption. Trapping experiments and electron paramagnetic resonance (EPR) confirmed that e⁻, h⁺, and ·O₂⁻ are key reactive species. The synergistic effects of improved charge dynamics, optimized light utilization, and interfacial electron transfer collectively contribute to the enhanced photocatalytic performance.

查看原文本刊更多论文

新型太阳能驱动钛酸铋/钛酸钡光催化剂的构建，显著提高了一氧化氮的净化效果。

光催化脱氮是一种很有前途的环境修复和太阳能转化方法。在本研究中，通过水热法合成了一系列Bi2Ti2O7/BaTiO3异质结，与单个组分相比，其光催化NO去除率（94%）更高。综合表征证实了紧密耦合异质结的形成，增强了可见光吸收和电荷分离。光学和电化学分析表明，该复合材料在保持强氧化还原电位的同时，促进了有效的电子空穴分离（在EIS中得到了降低的PL强度和更低的电荷转移电阻的支持），符合S-scheme电荷转移机制。此外，表面积（BET）和孔隙率的增加进一步促进了反应物的吸附。捕获实验和电子顺磁共振（EPR）证实了e⁻、h⁺和·O2⁻是关键的反应物质。改进的电荷动力学、优化的光利用和界面电子转移的协同效应共同促进了光催化性能的增强。

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

Chemistry - An Asian Journal 化学-化学综合

CiteScore

7.00

自引率

2.40%

发文量

535

审稿时长

1.3 months

期刊介绍： Chemistry—An Asian Journal is an international high-impact journal for chemistry in its broadest sense. The journal covers all aspects of chemistry from biochemistry through organic and inorganic chemistry to physical chemistry, including interdisciplinary topics. Chemistry—An Asian Journal publishes Full Papers, Communications, and Focus Reviews. A professional editorial team headed by Dr. Theresa Kueckmann and an Editorial Board (headed by Professor Susumu Kitagawa) ensure the highest quality of the peer-review process, the contents and the production of the journal. Chemistry—An Asian Journal is published on behalf of the Asian Chemical Editorial Society (ACES), an association of numerous Asian chemical societies, and supported by the Gesellschaft Deutscher Chemiker (GDCh, German Chemical Society), ChemPubSoc Europe, and the Federation of Asian Chemical Societies (FACS).