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Dual Functional N-Doped TiO2-Carbon Composite Fibers for Efficient Removal of Water Pollutants
Zhang, Jinju1,2,3; Li, Yanxiang1,2; Li, Lei1,2; Li, Wangliang1,2; Yang, Chuanfang1,2
2018-10-01
Source PublicationACS SUSTAINABLE CHEMISTRY & ENGINEERING
ISSN2168-0485
Volume6Issue:10Pages:12893-12905
Abstract

3D hierarchically structured porous carbon composite short fibers were prepared by carbonizing in N-2 and activating in CO2 microcellulose fibers originally tethered with nano-TiO2. The TiO2 nanoparticles grew in situ on the cellulose surface and inside-out the body of cellulose during their original hydrolysis synthesis process assisted by microwave irradiation, creating sufficient adsorption sites of hydroxyl groups and exposing abundant interfaces after heat treatment. The obtained carbonized fibers displayed rapid adsorption of methylene blue, phenol, and Cr (VI) and exhibited high adsorption capacity, outperforming commercial activated carbon powders having 50% more surface area. Moreover, the composite effectively photocatalyzed the oxidation of phenol and the reduction of Cr (VI) under both UV-vis and visible light. The enhanced photocatalytic activity was believed to be due to (1) the doping of N atoms to the TiO2 crystal lattice resulting from the formation of Ti3+ and oxygen vacancies during the carbonization process and (2) the interfaces formed between TiO2 and the carbon, which promotes charge transfer and inhibit electron-hole recombination. The dual functional TiO2-carbon composite fibers made by this simple approach with many naturally endowed properties can also be repeatedly used after regeneration, opening up a sustainable opportunity for their versatile applications for both water and air decontamination.

KeywordN-doped Tio2 Cellulose Activated Carbon Fiber Adsorption Photocatalysis
DOI10.1021/acssuschemeng.8b02264
Language英语
WOS KeywordDriven Photocatalytic Performance ; Visible-light Photocatalyst ; Lithium-ion Batteries ; Sol-gel Synthesis ; Activated Carbon ; Anatase Tio2 ; Dye Adsorption ; Nanoparticles ; Oxidation ; Microwave
Funding ProjectMajor Science and Technology Program for Water Pollution Control and Treatment[2015ZX07202-013] ; Chinese Academy of Sciences
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Engineering
WOS SubjectChemistry, Multidisciplinary ; Green & Sustainable Science & Technology ; Engineering, Chemical
Funding OrganizationMajor Science and Technology Program for Water Pollution Control and Treatment ; Chinese Academy of Sciences
WOS IDWOS:000446413100037
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/26294
Collection中国科学院过程工程研究所
Corresponding AuthorYang, Chuanfang
Affiliation1.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
2.Chinese Acad Sci, CAS Key Lab Green Proc & Engn, Inst Proc Engn, Beijing 100190, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Jinju,Li, Yanxiang,Li, Lei,et al. Dual Functional N-Doped TiO2-Carbon Composite Fibers for Efficient Removal of Water Pollutants[J]. ACS SUSTAINABLE CHEMISTRY & ENGINEERING,2018,6(10):12893-12905.
APA Zhang, Jinju,Li, Yanxiang,Li, Lei,Li, Wangliang,&Yang, Chuanfang.(2018).Dual Functional N-Doped TiO2-Carbon Composite Fibers for Efficient Removal of Water Pollutants.ACS SUSTAINABLE CHEMISTRY & ENGINEERING,6(10),12893-12905.
MLA Zhang, Jinju,et al."Dual Functional N-Doped TiO2-Carbon Composite Fibers for Efficient Removal of Water Pollutants".ACS SUSTAINABLE CHEMISTRY & ENGINEERING 6.10(2018):12893-12905.
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