A chemical method for identifying the photocatalytic active sites on carbon dots

被引：37

作者：

Hu, Shengliang ^{[1
]}

Zhang, Wenyu ^{[1
]}

Chang, Qing ^{[1
]}

Yang, Jinlong ^{[1
,2
]}

Lin, Kui ^{[3
]}

机构：

[1] North Univ China, Sch Mat Sci & Engn, Taiyuan 030051, Peoples R China

[2] Tsinghua Univ, State Key Lab New Ceram & Fine Proc, Beijing 100084, Peoples R China

[3] Tianjin Univ, Analyt Instrumentat Ctr, Tianjin 300072, Peoples R China

来源：

CARBON | 2016年 / 103卷

关键词：

QUANTUM DOTS; QUANTIFICATION;

D O I：

10.1016/j.carbon.2016.03.004

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：

Fluorescent carbon dots (CDs) with oxygen-containing functional groups were prepared by a hydrothermal method. Three kinds of typical oxygen functional groups, i.e. hydroxyl, carbonyl, and carboxylic acid groups, were selectively deactivated to independently assess their photocatalytic activities on the surface of CDs. The presented results indicate that the carbonyl group on CDs is their photocatalytic active sites. Hereby, the high photocatalytic activities of CDs could be produced by enhancing carbonyl group concentration on their surface. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：391 / 393

页数：3

共 9 条

[1] Carbon Nanoparticles as Visible-Light Photocatalysts for Efficient CO2 Conversion and Beyond
Cao, Li
Sahu, Sushant
Anilkumar, Parambath
Bunker, Christopher E.
Xu, Juan
Fernando, K. A. Shiral
Wang, Ping
Guliants, Elena A.
Tackett, Kenneth N., II
Sun, Ya-Ping
[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (13) : 4754 - 4757
[2] Fluorescence Labeling and Quantification of Oxygen-Containing Functionalities on the Surface of Single-Walled Carbon Nanotubes
Dementev, Nikolay
Feng, Xue
Borguet, Eric
[J]. LANGMUIR, 2009, 25 (13) : 7573 - 7577
[3] Chemical Regulation of Carbon Quantum Dots from Synthesis to Photocatalytic Activity
Hu, Shengliang
Tian, Ruixue
Wu, Lingling
Zhao, Qing
Yang, Jinlong
Liu, Jun
Cao, Shirui
[J]. CHEMISTRY-AN ASIAN JOURNAL, 2013, 8 (05) : 1035 - 1041
[4] Carbon nanodots: synthesis, properties and applications
Li, Haitao
Kang, Zhenhui
Liu, Yang
Lee, Shuit-Tong
[J]. JOURNAL OF MATERIALS CHEMISTRY, 2012, 22 (46) : 24230 - 24253
[5] Carbon quantum dots and their applications
Lim, Shi Ying
Shen, Wei
Gao, Zhiqiang
[J]. CHEMICAL SOCIETY REVIEWS, 2015, 44 (01) : 362 - 381
[6] Methods of enhancement of reactivity and selectivity of sodium borohydride for applications in organic synthesis
Periasamy, M
Thirumalaikumar, P
[J]. JOURNAL OF ORGANOMETALLIC CHEMISTRY, 2000, 609 (1-2) : 137 - 151
[7] Oxidative Dehydrogenation on Nanocarbon: Identification and Quantification of Active Sites by Chemical Titration
Qi, Wei
Liu, Wei
Zhang, Bingsen
Gu, Xianmo
Guo, Xiaoling
Su, Dangsheng
[J]. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2013, 52 (52) : 14224 - 14228
[8] The use of heterogeneous chemistry for the characterization of functional groups at the gas/particle interface of soot and TiO2 nanoparticles
Setyan, A.
Sauvain, J. -J.
Rossi, M. J.
[J]. PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2009, 11 (29) : 6205 - 6217
[9] Deep Ultraviolet Photoluminescence of Water-Soluble Self-Passivated Graphene Quantum Dots
Tang, Libin
Ji, Rongbin
Cao, Xiangke
Lin, Jingyu
Jiang, Hongxing
Li, Xueming
Teng, Kar Seng
Luk, Chi Man
Zeng, Songjun
Hao, Jianhua
Lau, Shu Ping
[J]. ACS NANO, 2012, 6 (06) : 5102 - 5110

← 1 →