FigsharePub Date : 2021-04-01DOI: 10.1021/acs.langmuir.1c00210.s001
Tong Song (5220311), Xiao Zhang (152326), Ping Yang (56755)
{"title":"Bifunctional Nitrogen-Doped Carbon Dots in g‑C<sub>3</sub>N<sub>4</sub>/WO<sub><i>x</i></sub> Heterojunctionnfor Enhanced Photocatalytic Water-Splitting Performance","authors":"Tong Song (5220311), Xiao Zhang (152326), Ping Yang (56755)","doi":"10.1021/acs.langmuir.1c00210.s001","DOIUrl":"https://doi.org/10.1021/acs.langmuir.1c00210.s001","url":null,"abstract":"A novelnmetal-free all-solid-state z-scheme g-C<sub>3</sub>N<sub>4</sub>/NCDs/WO<sub><i>x</i></sub> photocatalyst was fabricatednusing nitrogen-doped carbon dots (NCDs) as the electron mediator.nAs-prepared sandwich-structured composites displayed enhanced visiblenand NIR light photocatalytic activity. Under visible light irradiation,nthe hydrogen evolution rate reached 3.27 mmol g<sup>–1</sup> h<sup>–1</sup>, which increased to roughly seven times highernthan that of pure g-C<sub>3</sub>N<sub>4</sub> and roughly twice thatnof g-C<sub>3</sub>N<sub>4</sub>/NCDs or g-C<sub>3</sub>N<sub>4</sub>/WO<sub><i>x</i></sub> binary heterojunctions. The apparentnquantum efficiency is 7.58% at 420 nm. The localized surface plasmonnresonance effect of WO<sub><i>x</i></sub> and the up-convertednphotoluminescence property of NCDs enhanced the utilization efficiencynof NIR light together. In addition, the matched energy band structuresnof WO<sub><i>x</i></sub> and g-C<sub>3</sub>N<sub>4</sub> as well as the effective electron conductor (NCDs) between themnaccelerate electron transfer at the interface. The all-solid-statenz-scheme g-C<sub>3</sub>N<sub>4</sub>/NCDs/WO<sub><i>x</i></sub> photocatlyst was confirmed by a series of characterizationsnand experiment results. This report offered new insights into constructingnan efficient all-solid-state z-scheme photocatalyst to be appliednduring the photocatalytic water-splitting reaction in the visiblenand NIR light regions.","PeriodicalId":522181,"journal":{"name":"Figshare","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147893027","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}