In-situ preparation of Ti3C2/Ti3+-TiO2 composites with mosaic structures for the adsorption and Photo-degradation of flowing acetaldehyde under visible light

被引：36

作者：

Wang, Xiao ^{[1
]}

Yang, Yina ^{[1
,2
]}

Lu, Guanhong ^{[1
]}

Shi, Gansheng ^{[1
]}

Wang, Yan ^{[1
]}

Wang, Ranran ^{[1
]}

Xie, Xiaofeng ^{[1
]}

Sun, Jing ^{[1
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 585 Heshuo Rd, Shanghai 201899, Peoples R China

[2] Univ Chinese Acad Sci, Beijing, Peoples R China

来源：

APPLIED SURFACE SCIENCE | 2020年 / 531卷

基金：

中国国家自然科学基金;

关键词：

Mosaic structure; Photocatalytic oxidation; Acetaldehyde; Yisible light; Heterojunction composite; ENVIRONMENTAL APPLICATIONS; GASEOUS ACETALDEHYDE; 2-DIMENSIONAL TI3C2; GAS-PHASE; TIO2; MXENE; PHOTOCATALYSIS; EXFOLIATION; DEGRADATION; OXIDATION;

D O I：

10.1016/j.apsusc.2020.147101

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Photocatalytic degradation has been proven to be an effective way in the elimination of gaseous acetaldehyde. This work provided a facile in-situ method for the fabrication of Ti3C2/Ti3+-TiO2 photocatalysts by oxidizing Ti3C2 with H2O(2). A novel mosaic structure formed by small Ti3+-TiO2 nanoparticles embedded in Ti3C2 layers was obtained by adjusting the synthesis parameters. Compared with pure Ti3C2, a 60-fold increase in the BET-SSA was observed in Ti3C2/Ti3+-TiO2 composites, which benefits the capture of the flowing acetaldehyde gas. Self-doped TiO2 nanoparticles induced by the incomplete oxidation process enabled the photodegradation of acetaldehyde under visible light. Besides, the closely contact between the two components helps the transfer of photon-induced charge carriers from TiO2 to Ti3C2, which suppressed the recombination of electron-hole pairs and promoted the generation of active radicals. Compared with commercial P25, which has almost no catalytic activity under the irradiation of visible light, a degradation efficiency of around 27% was achieved by applying Ti3C2/Ti3+-TiO2 as the photocatalyst. This work provided a new facile method for the in-situ fabrication of heterogeneous structures for the photocatalytic elimination of acetaldehyde under visible light.

引用

页数：9

共 43 条

[1]

Chen Q., 2019, APPL CATAL B-ENVIRON

[2] Increasing Solar Absorption for Photocatalysis with Black Hydrogenated Titanium Dioxide Nanocrystals [J].

Chen, Xiaobo ;

Liu, Lei ;

Yu, Peter Y. ;

Mao, Samuel S. .

SCIENCE, 2011, 331 (6018) :746-750

[3] A novel route to synthesize C/Pt/TiO2 phase tunable anatase Rutile TiO2 for efficient sunlight-driven photocatalytic applications [J].

Chinh-Chien Nguyen ;

Duc Trung Nguyen ;

Trong-On Do .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 226 :46-52

[4] THE OPTICAL ABSORPTION AND PHOTOCONDUCTIVITY OF RUTILE [J].

CRONEMEYER, DC ;

GILLEO, MA .

PHYSICAL REVIEW, 1951, 82 (06) :975-976

[5] Polarity on adsorption and photocatalytic performances of N-GR/TiO2 towards gaseous acetaldehyde and ethylene [J].

Dai, Xueping ;

Wang, Yan ;

Wang, Xiao ;

Tong, Shengrui ;

Xie, Xiaofeng .

APPLIED SURFACE SCIENCE, 2019, 485 :255-265

[6] High-Performance Electrocatalytic Conversion of N2 to NH3 Using Oxygen-Vacancy-Rich TiO2 In Situ Grown on Ti3C2Tx MXene [J].

Fang, Yanfeng ;

Liu, Zaichun ;

Han, Jingrui ;

Jin, Zhaoyong ;

Han, Yaqian ;

Wang, Faxing ;

Niu, Yusheng ;

Wu, Yuping ;

Xu, Yuanhong .

ADVANCED ENERGY MATERIALS, 2019, 9 (16)

[7] Two-dimensional MXene Ti3C2 produced by exfoliation of Ti3AlC2 [J].

Feng, Aihu ;

Yu, Yun ;

Wang, Yong ;

Jiang, Feng ;

Yu, Yang ;

Mi, Le ;

Song, Lixin .

MATERIALS & DESIGN, 2017, 114 :161-166

[8] Hydrothermal synthesis of TiO2/Ti3C2 nanocomposites with enhanced photocatalytic activity [J].

Gao, Yupeng ;

Wang, Libo ;

Zhou, Aiguo ;

Li, Zhengyang ;

Chen, Jingkuo ;

Bala, Hari ;

Hu, Qianku ;

Cao, Xinxin .

MATERIALS LETTERS, 2015, 150 :62-64

[9]

Gilliland GD, 1997, MAT SCI ENG R, V18, P99, DOI 10.1016/S0927-796X(97)80003-4

[10] Fundamentals of TiO2 Photocatalysis: Concepts, Mechanisms, and Challenges [J].

Guo, Qing ;

Zhou, Chuanyao ;

Ma, Zhibo ;

Yang, Xueming .

ADVANCED MATERIALS, 2019, 31 (50)

← 1 2 3 4 5 →