Steered polymorphic nanodomains in TiO<sub>2</sub> to boost visible-light photocatalytic oxidation.

Zhang, Zeju; Niu, Mang; Li, Wei; Ding, Chenfeng; Xie, Peitao; Li, Yongxin; Chen, Lili; Lan, Xiaopeng; Liu, Chunlei; Yan, Xiaodong; Fu, Xuewei; Liu, Yaochun; Liu, Yuan; Cao, Dapeng; Dai, Jingjie; Hong, Xiaofen; Liu, Chunzhao

Steered polymorphic nanodomains in TiO₂ to boost visible-light photocatalytic oxidation.

Zhang, Zeju; Niu, Mang; Li, Wei; Ding, Chenfeng; Xie, Peitao; Li, Yongxin; Chen, Lili; Lan, Xiaopeng; Liu, Chunlei; Yan, Xiaodong; Fu, Xuewei; Liu, Yaochun; Liu, Yuan; Cao, Dapeng; Dai, Jingjie; Hong, Xiaofen; Liu, Chunzhao.

Affiliation

Zhang Z; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Niu M; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Li W; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Ding C; Energy Materials and Surface Sciences Unit (EMSSU), Okinawa Institute of Science and Technology Graduate University (OIST) 1919-1 Tancha Kunigami-gun, Onna-son Okinawa 904-0495 Japan chenfeng.ding@oist.jp.
Xie P; Foshan (Southern China) Institute for New Materials Foshan 528200 China.
Li Y; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Chen L; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Lan X; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Liu C; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Yan X; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Fu X; Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University Wuxi 214122 China.
Liu Y; College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University Chengdu 610065 Sichuan China.
Liu Y; Foshan (Southern China) Institute for New Materials Foshan 528200 China.
Cao D; State Key Laboratory of Bio-fibers and Eco-textiles, Institute of Biochemical Engineering, The Affiliated Qingdao Central Hospital of Qingdao University, College of Materials Science and Engineering, Qingdao University Qingdao 266071 China liuyuan@qdu.edu.cn czliu@qdu.edu.cn.
Dai J; Foshan (Southern China) Institute for New Materials Foshan 528200 China.
Hong X; Beijing Advanced Innovation Center for Soft Matter Science and Engineering, Beijing University of Chemical Technology Beijing 100029 China.
Liu C; School of Mechanical and Electronic Engineering, Qingdao Binhai University Qingdao 266555 Shandong China.

RSC Adv ; 12(16): 9660-9670, 2022 Mar 25.

Article de En | MEDLINE | ID: mdl-35424931

ABSTRACT

ABSTRACT

A breakthrough in enhancing visible-light photocatalysis of wide-bandgap semiconductors such as prototypical titania (TiO2) via cocatalyst decoration is still challenged by insufficient heterojunctions and inevitable interfacial transport issues. Herein, we report a novel TiO2-based composite material composed of in situ generated polymorphic nanodomains including carbon nitride (C3N4) and (001)/(101)-faceted anatase nanocrystals. The introduction of ultrafine C3N4 results in the generation of many oxygen vacancies in the TiO2 lattice, and simultaneously induces the exposure and growth of anatase TiO2(001) facets with high surface energy. The photocatalytic performance of C3N4-induced TiO2 for degradation of 2,4-dichlorophenol under visible-light irradiation was tested, its apparent rate being up to 1.49 × 10-2 min-1, almost 3.8 times as high as that for the pure TiO2 nanofibers. More significantly, even under low operation temperature and after a long-term photocatalytic process, the composite still exhibits exceptional degradation efficiency and stability. The normalized degradation efficiency and effective lifespan of the composite photocatalyst are far superior to other reported modified photocatalysts.

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Texte intégral: 1 Collection: 01-internacional Base de données: MEDLINE Langue: En Journal: RSC Adv Année: 2022 Type de document: Article