Photocatalytic removal of NO by Z-scheme mineral based heterojunction intermediated by carbon quantum dots

被引：26

作者：

Li, Xiazhang ^{[1
,2
]}

Shi, Haiyang ^{[1
]}

Wang, Tianshi ^{[2
]}

Zhang, Yuying ^{[2
]}

Zuo, Shixiang ^{[1
]}

Luo, Shiping ^{[1
]}

Yao, Chao ^{[1
]}

机构：

[1] Changzhou Univ, Adv Catalysis & Green Mfg Collaborat Innovat Ctr, Changzhou 213164, Peoples R China

[2] Univ Delaware, Dept Mat Sci & Engn, Newark, DE 19716 USA

来源：

APPLIED SURFACE SCIENCE | 2018年 / 456卷

基金：

美国国家科学基金会;

关键词：

Carbon quantum dots; Attapulgite; Perovskite; NO conversion; Z-scheme photocatalyst; VISIBLE-LIGHT-DRIVEN; ELECTROCHEMICAL SYNTHESIS; CATALYTIC-OXIDATION; PEROVSKITE OXIDES; CO2; REDUCTION; COMPOSITE; NANOCOMPOSITE; PERFORMANCE; FABRICATION; CONVERSION;

D O I：

10.1016/j.apsusc.2018.06.133

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：

A novel photocatalyst integrated with carbon quantum dots (CQDs), SmFeO3 and attapulgite (ATP) clay mineral was synthesized by sol-gel/impregnation method which was successfully applied for NO removal under solar light irradiation. The textual and optical properties of the materials were analyzed by various characterizations. Results indicated the SmFeO3 nanoparticles were uniformed loaded on the ATP support and both coherently interacted with CQDs. The amount of CODs had significant effect on the NO conversion, while 5 wt% incorporation achieved the highest 90% conversion rate. An indirect Z-scheme mechanism was proposed that the CQDs performed as an intermediate between SmFeO3 and ATP for the charge transfer while the high redox potential was maintained. In addition, the ATP fiber showed not only UV-responsive property in Z-scheme structure, but also excellent adsorption effect for gas molecules.

引用

页码：835 / 844

页数：10

共 50 条

[1] Cu2O/TiO2 heterostructures for CO2 reduction through a direct Z-scheme: Protecting Cu2O from photocorrosion [J].

Aguirre, Matias E. ;

Zhou, Ruixin ;

Eugene, Alexis J. ;

Guzman, Marcelo I. ;

Grela, Maria A. .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 217 :485-493

[2] Surface functionalized carbogenic quantum dots [J].

Bourlinos, Athanasios B. ;

Stassinopoulos, Andreas ;

Anglos, Demetrios ;

Zboril, Radek ;

Karakassides, Michael ;

Giannelis, Emmanuel P. .

SMALL, 2008, 4 (04) :455-458

[3] Visible-light-enhanced photothermocatalytic activity of ABO3-type perovskites for the decontamination of gaseous styrene [J].

Chen, Jiangyao ;

He, Zhigui ;

Li, Guiying ;

An, Taicheng ;

Shi, Huixian ;

Li, Yuanzhi .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2017, 209 :146-154

[4] Synergistic photo-thermal catalytic NO purification of MnOx/g-C3N4: Enhanced performance and reaction mechanism [J].

Chen, Peng ;

Dong, Fan ;

Ran, Maoxi ;

Li, Jiarui .

CHINESE JOURNAL OF CATALYSIS, 2018, 39 (04) :619-629

[5] Novel Z-scheme visible-light-driven Ag3PO4/Ag/SiC photocatalysts with enhanced photocatalytic activity [J].

Chen, Zhihong ;

Bing, Fan ;

Liu, Qiong ;

Zhang, Zhengguo ;

Fang, Xiaoming .

JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (08) :4652-4658

[6] Facile synthesis of g-C3N4/BiVO4 heterojunctions with enhanced visible light photocatalytic performance [J].

Cheng, Jiang ;

Yan, Xuelian ;

Mo, Qionghua ;

Liu, Bitao ;

Wang, Jun ;

Yang, Xin ;

Li, Lu .

CERAMICS INTERNATIONAL, 2017, 43 (01) :301-307

[7] Highly Efficient Performance and Conversion Pathway of Photocatalytic NO Oxidation on SrO-Clusters@Amorphous Carbon Nitride [J].

Cui, Wen ;

Li, Jieyuan ;

Dong, Fan ;

Sun, Yanjuan ;

Jiang, Guangming ;

Cen, Wanglai ;

Lee, S. C. ;

Wu, Zhongbiao .

ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2017, 51 (18) :10682-10690

[8] Synthesis of mesoporous polymeric carbon nitride exhibiting enhanced and durable visible light photocatalytic performance [J].

Dong, Fan ;

Li, Yuhan ;

Ho, Wingkei ;

Zhang, Haidong ;

Fu, Min ;

Wu, Zhongbiao .

CHINESE SCIENCE BULLETIN, 2014, 59 (07) :688-698

[9] The activation of reactants and intermediates promotes the selective photocatalytic NO conversion on electron-localized Sr-intercalated g-C3N4 [J].

Dong, Xing'an ;

Li, Jieyuan ;

Xing, Qian ;

Zhou, Ying ;

Huang, Hongwei ;

Dong, Fan .

APPLIED CATALYSIS B-ENVIRONMENTAL, 2018, 232 :69-76

[10] Blue luminescent graphene quantum dots and graphene oxide prepared by tuning the carbonization degree of citric acid [J].

Dong, Yongqiang ;

Shao, Jingwei ;

Chen, Congqiang ;

Li, Hao ;

Wang, Ruixue ;

Chi, Yuwu ;

Lin, Xiaomei ;

Chen, Guonan .

CARBON, 2012, 50 (12) :4738-4743

← 1 2 3 4 5 →