{"title":"将光热粒子普遍集成到 g-C3N4 上以改善光催化性能","authors":"Xiqing Xie , Qiaoqi Guo , Shujing Yu, Huajun Feng, Yingfeng Xu","doi":"10.1016/j.carbon.2024.119322","DOIUrl":null,"url":null,"abstract":"<div><p>The photothermal effect has been recognized as a universal promoter in various photocatalytic reactions. However, in many promising nanocomposite systems, the integration of heterogeneous photothermal materials with photocatalysts remains a significant technical challenge. Focusing on the emerging graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) based photocatalyst, we identified that the segregation of the introduced photothermal particles results from the dynamic instability of the original solid-solid dispersion system, which essentially origins from a sluggish two-step solid-liquid-solid phase transformation of urea towards g-C<sub>3</sub>N<sub>4</sub>. By taking advantages of the photothermal particles to be loaded, we developed a photothermal-polymerization strategy to create a rapid heating to overcome their undesired segregation during g-C<sub>3</sub>N<sub>4</sub> formation. The strategy enables a one-step loading of various photothermal particles on the g-C<sub>3</sub>N<sub>4</sub>, presenting a versatile methodology. This sustainable technique enhances the synthesis yield of g-C<sub>3</sub>N<sub>4</sub> by 352 % with reduced energy consumption. The derived photothermal particles-dispersed g-C<sub>3</sub>N<sub>4</sub> shows 290 % improvement in photocatalytic CO<sub>2</sub> reduction compared to the separated system, which is obtained from the traditional heating synthesis. Beyond enriching the accessible categories of composite catalysts, this study may deepen physiochemical insights into the dynamic transformation of the novel dispersion system.</p></div>","PeriodicalId":262,"journal":{"name":"Carbon","volume":null,"pages":null},"PeriodicalIF":10.5000,"publicationDate":"2024-06-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Universal integration of photothermal particles onto g-C3N4 towards improved photocatalysis\",\"authors\":\"Xiqing Xie , Qiaoqi Guo , Shujing Yu, Huajun Feng, Yingfeng Xu\",\"doi\":\"10.1016/j.carbon.2024.119322\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>The photothermal effect has been recognized as a universal promoter in various photocatalytic reactions. However, in many promising nanocomposite systems, the integration of heterogeneous photothermal materials with photocatalysts remains a significant technical challenge. Focusing on the emerging graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) based photocatalyst, we identified that the segregation of the introduced photothermal particles results from the dynamic instability of the original solid-solid dispersion system, which essentially origins from a sluggish two-step solid-liquid-solid phase transformation of urea towards g-C<sub>3</sub>N<sub>4</sub>. By taking advantages of the photothermal particles to be loaded, we developed a photothermal-polymerization strategy to create a rapid heating to overcome their undesired segregation during g-C<sub>3</sub>N<sub>4</sub> formation. The strategy enables a one-step loading of various photothermal particles on the g-C<sub>3</sub>N<sub>4</sub>, presenting a versatile methodology. This sustainable technique enhances the synthesis yield of g-C<sub>3</sub>N<sub>4</sub> by 352 % with reduced energy consumption. The derived photothermal particles-dispersed g-C<sub>3</sub>N<sub>4</sub> shows 290 % improvement in photocatalytic CO<sub>2</sub> reduction compared to the separated system, which is obtained from the traditional heating synthesis. Beyond enriching the accessible categories of composite catalysts, this study may deepen physiochemical insights into the dynamic transformation of the novel dispersion system.</p></div>\",\"PeriodicalId\":262,\"journal\":{\"name\":\"Carbon\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":10.5000,\"publicationDate\":\"2024-06-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Carbon\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0008622324005414\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Carbon","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0008622324005414","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Universal integration of photothermal particles onto g-C3N4 towards improved photocatalysis
The photothermal effect has been recognized as a universal promoter in various photocatalytic reactions. However, in many promising nanocomposite systems, the integration of heterogeneous photothermal materials with photocatalysts remains a significant technical challenge. Focusing on the emerging graphitic carbon nitride (g-C3N4) based photocatalyst, we identified that the segregation of the introduced photothermal particles results from the dynamic instability of the original solid-solid dispersion system, which essentially origins from a sluggish two-step solid-liquid-solid phase transformation of urea towards g-C3N4. By taking advantages of the photothermal particles to be loaded, we developed a photothermal-polymerization strategy to create a rapid heating to overcome their undesired segregation during g-C3N4 formation. The strategy enables a one-step loading of various photothermal particles on the g-C3N4, presenting a versatile methodology. This sustainable technique enhances the synthesis yield of g-C3N4 by 352 % with reduced energy consumption. The derived photothermal particles-dispersed g-C3N4 shows 290 % improvement in photocatalytic CO2 reduction compared to the separated system, which is obtained from the traditional heating synthesis. Beyond enriching the accessible categories of composite catalysts, this study may deepen physiochemical insights into the dynamic transformation of the novel dispersion system.
期刊介绍:
The journal Carbon is an international multidisciplinary forum for communicating scientific advances in the field of carbon materials. It reports new findings related to the formation, structure, properties, behaviors, and technological applications of carbons. Carbons are a broad class of ordered or disordered solid phases composed primarily of elemental carbon, including but not limited to carbon black, carbon fibers and filaments, carbon nanotubes, diamond and diamond-like carbon, fullerenes, glassy carbon, graphite, graphene, graphene-oxide, porous carbons, pyrolytic carbon, and other sp2 and non-sp2 hybridized carbon systems. Carbon is the companion title to the open access journal Carbon Trends. Relevant application areas for carbon materials include biology and medicine, catalysis, electronic, optoelectronic, spintronic, high-frequency, and photonic devices, energy storage and conversion systems, environmental applications and water treatment, smart materials and systems, and structural and thermal applications.