Zn-TiO2/AC photocatalysts for pollutants degradation from experimental and DFT studies

IF 3.9 2区化学 Q2 CHEMISTRY, PHYSICAL

Molecular Catalysis Pub Date : 2025-03-23 DOI:10.1016/j.mcat.2025.115037

Xiao Chu, Chen Chen, Ying Liang, Yuliang Chen, Yuliang Wu, Yijiang Liu, Rui Meng, Wenmin Wang, Weiwei Huang, Fei Yang, Xuesong Yi, Jun Cheng

{"title":"Zn-TiO2/AC photocatalysts for pollutants degradation from experimental and DFT studies","authors":"Xiao Chu, Chen Chen, Ying Liang, Yuliang Chen, Yuliang Wu, Yijiang Liu, Rui Meng, Wenmin Wang, Weiwei Huang, Fei Yang, Xuesong Yi, Jun Cheng","doi":"10.1016/j.mcat.2025.115037","DOIUrl":null,"url":null,"abstract":"<div><div>The massive emission of dye wastewater has caused significant environmental problems. In this study, zinc-doped titanium dioxide loaded on biochar was synthesized by a simple solvothermal method to investigate its ability of degradation for dyes in photocatalytic process. The discussion focused on the impact of unactivated, acid-activated, and alkali-activated biochar on the properties of composites. Additionally, the composite catalysts underwent comprehensive physical and chemical characterization. The results showed that the particle size of Zn-TiO<sub>2<img></sub>OHAC increased significantly, which improved the sedimentation performance. Zn-TiO<sub>2<img></sub>OHAC demonstrated exceptional photocatalytic efficiency in the degradation of various pollutants such as Rhodamine B, Congo Red, Methyl Orange, and Methylene Blue. The better performance of the alkali-treated biochar-loaded composite catalysts was attributed to the fact that the alkali-treated biochar changed the electronic structure of the loaded materials and contained more carbon-oxygen functional groups, which was favorable for the separation of electrons and holes.</div></div>","PeriodicalId":393,"journal":{"name":"Molecular Catalysis","volume":"579 ","pages":"Article 115037"},"PeriodicalIF":3.9000,"publicationDate":"2025-03-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Molecular Catalysis","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2468823125002238","RegionNum":2,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}

引用次数: 0

Abstract

The massive emission of dye wastewater has caused significant environmental problems. In this study, zinc-doped titanium dioxide loaded on biochar was synthesized by a simple solvothermal method to investigate its ability of degradation for dyes in photocatalytic process. The discussion focused on the impact of unactivated, acid-activated, and alkali-activated biochar on the properties of composites. Additionally, the composite catalysts underwent comprehensive physical and chemical characterization. The results showed that the particle size of Zn-TiO₂OHAC increased significantly, which improved the sedimentation performance. Zn-TiO₂OHAC demonstrated exceptional photocatalytic efficiency in the degradation of various pollutants such as Rhodamine B, Congo Red, Methyl Orange, and Methylene Blue. The better performance of the alkali-treated biochar-loaded composite catalysts was attributed to the fact that the alkali-treated biochar changed the electronic structure of the loaded materials and contained more carbon-oxygen functional groups, which was favorable for the separation of electrons and holes.

Abstract Image

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Molecular Catalysis Chemical Engineering-Process Chemistry and Technology

CiteScore

6.90

自引率

10.90%

发文量

700

审稿时长

40 days

期刊介绍： Molecular Catalysis publishes full papers that are original, rigorous, and scholarly contributions examining the molecular and atomic aspects of catalytic activation and reaction mechanisms. The fields covered are: Heterogeneous catalysis including immobilized molecular catalysts Homogeneous catalysis including organocatalysis, organometallic catalysis and biocatalysis Photo- and electrochemistry Theoretical aspects of catalysis analyzed by computational methods