{"title":"Electrostatically Assembled Cu2O/TiO2 Nanocomposite with Type-II Heterojunctions for Enhanced Photocatalytic CO2 Methanation","authors":"Jiali Tang, Lipeng Wang, Guobing Mao*, Rui Wang, Waqar Younas, Tiantian Zong, Jianyong Huang and Qi Liu*, ","doi":"10.1021/acsanm.5c0187810.1021/acsanm.5c01878","DOIUrl":null,"url":null,"abstract":"<p >A Cu<sub>2</sub>O/TiO<sub>2</sub> nanocomposite type-II heterojunction was constructed through electrostatic self-assembly, achieving a visible-light-driven CH<sub>4</sub> production rate of 34.13 μmol g<sup>–1</sup> h<sup>–1</sup>, which is 43.85 and 2.39 times higher than that of Cu<sub>2</sub>O nanocubes and TiO<sub>2</sub> nanoparticles, respectively. The enhanced activity can be attributed to several synergistic effects: (1) an increased surface area of 71.2 m<sup>2</sup> g<sup>−1</sup> for CO<sub>2</sub> adsorption, (2) a broadened absorption spectrum in the visible light range, and (3) efficient interfacial electron transfer that suppresses recombination. This energy-efficient synthesis method circumvents the need for high-temperature calcination, thereby providing a scalable solution for industrial CO<sub>2</sub> photoreduction.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":"8 23","pages":"11769–11773 11769–11773"},"PeriodicalIF":5.5000,"publicationDate":"2025-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.5c01878","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
A Cu2O/TiO2 nanocomposite type-II heterojunction was constructed through electrostatic self-assembly, achieving a visible-light-driven CH4 production rate of 34.13 μmol g–1 h–1, which is 43.85 and 2.39 times higher than that of Cu2O nanocubes and TiO2 nanoparticles, respectively. The enhanced activity can be attributed to several synergistic effects: (1) an increased surface area of 71.2 m2 g−1 for CO2 adsorption, (2) a broadened absorption spectrum in the visible light range, and (3) efficient interfacial electron transfer that suppresses recombination. This energy-efficient synthesis method circumvents the need for high-temperature calcination, thereby providing a scalable solution for industrial CO2 photoreduction.
期刊介绍：
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.
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