Nanotube-confinement induced size-controllable g-C3N4 quantum dots modified single-crystalline TiO2 nanotube arrays for stable synergetic photoelectrocatalysis

被引：351

作者：

Li, Guisheng ^{[1
]}

Lian, Zichao ^{[1
]}

Wang, Wenchao ^{[1
]}

Zhang, Dieqing ^{[1
]}

Li, Hexing ^{[1
,2
]}

机构：

[1] Shanghai Normal Univ, Shanghai Key Lab Rare Earth Funct Mat, Minist Educ, Key Lab Resource Chem, Shanghai 200234, Peoples R China

[2] Shanghai Univ Elect Power, Shanghai 200090, Peoples R China

来源：

NANO ENERGY | 2016年 / 19卷

基金：

中国国家自然科学基金;

关键词：

g-C3N4 quantum dots; TiO2-NTAs; Photoelectrocatalytic; H-2; evolution; Pollutant degradation; PHOTOCATALYTIC DEGRADATION; WATER; HYDROGEN; NANOPARTICLES; SILVER; ARCHITECTURES; ELECTRODES; NANOSHEETS; EVOLUTION; CATALYST;

D O I：

10.1016/j.nanoen.2015.10.011

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：

Size-controllable g-C3N4 quantum dots (QDs) were in-situ synthesized and grafted onto single crystalline TiO2 nanotube arrays (TiO2-NTAs) based on nanotube-confinement effect. This photoelectrocatalyst exhibited high activity in synergetic H-2 evolution and organic pollutant degradation. The g-C3N4 QDs, together with TiO2-NTAs due to multiple light reflections, promoted light harvesting owing to the narrow energy band gap and upconversion from quantum size effect of g-C3N4 QDs. Meanwhile, the single-crystal TiO2 in-situ formed during the g-C3N4 synthesis process favored the photoelectron transfer, and the g-C3N4/TiO2 heterojunctions further promoted separation of photoelectrons from holes. Moreover, the strong g-C3N4-TiO2 interaction and the confinement effect of TiO2 nanotubes efficiently inhibited self-gathering and leaching of g-C3N4 QDs, leading to excellent stability in photoelectrocatalysis. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：446 / 454

页数：9

共 46 条

[21] Metal-free efficient photocatalyst for stable visible water splitting via a two-electron pathway [J].

Liu, Juan ;

Liu, Yang ;

Liu, Naiyun ;

Han, Yuzhi ;

Zhang, Xing ;

Huang, Hui ;

Lifshitz, Yeshayahu ;

Lee, Shuit-Tong ;

Zhong, Jun ;

Kang, Zhenhui .

SCIENCE, 2015, 347 (6225) :970-974

[22] Modified TiO2 nanotube arrays (TNTAs): progressive strategies towards visible light responsive photoanode, a review [J].

Mohamed, Ahmed El Ruby ;

Rohani, Sohrab .

ENERGY & ENVIRONMENTAL SCIENCE, 2011, 4 (04) :1065-1086

[23] Hybridized Nanowires and Cubes: A Novel Architecture of a Heterojunctioned TiO2/SrTiO3 Thin Film for Efficient Water Splitting [J].

Ng, Jiawei ;

Xu, Shiping ;

Zhang, Xiwang ;

Yang, Hui Ying ;

Sun, Darren D. .

ADVANCED FUNCTIONAL MATERIALS, 2010, 20 (24) :4287-4294

[24] New experimental constraints on the composition and structure of tholins [J].

Quirico, Eric ;

Montagnac, Gilles ;

Lees, Victoria ;

McMillan, Paul F. ;

Szopa, Cyril ;

Cernogora, Guy ;

Rouzaud, Jean-Noel ;

Simon, Patrick ;

Bernard, Jean-Michel ;

Coll, Patrice ;

Fray, Nicolas ;

Minard, Robert D. ;

Raulin, Francois ;

Reynard, Bruno ;

Schmitt, Bernard .

ICARUS, 2008, 198 (01) :218-231

[25] TiO2 Nanotubes: Synthesis and Applications [J].

Roy, Poulomi ;

Berger, Steffen ;

Schmuki, Patrik .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2011, 50 (13) :2904-2939

[26] Chemically converted graphene as substrate for immobilizing and enhancing the activity of a polymeric catalyst [J].

Sun, Yiqing ;

Li, Chun ;

Xu, Yuxi ;

Bai, Hua ;

Yao, Zhiyi ;

Shi, Gaoquan .

CHEMICAL COMMUNICATIONS, 2010, 46 (26) :4740-4742

[27] Photodeposition of metal sulfide quantum dots on titanium(IV) dioxide and the applications to solar energy conversion [J].

Tada, Hiroaki ;

Fujishima, Musashi ;

Kobayashi, Hisayoshi .

CHEMICAL SOCIETY REVIEWS, 2011, 40 (07) :4232-4243

[28] p-n Heterojunction photoelectrodes composed of Cu2O-loaded TiO2 nanotube arrays with enhanced photoelectrochemical and photoelectrocatalytic activities [J].

Wang, Mengye ;

Sun, Lan ;

Lin, Zhiqun ;

Cai, Jianhuai ;

Xie, Kunpeng ;

Lin, Changjian .

ENERGY & ENVIRONMENTAL SCIENCE, 2013, 6 (04) :1211-1220

[29]

Wang XC, 2009, NAT MATER, V8, P76, DOI [10.1038/nmat2317, 10.1038/NMAT2317]

[30] Synthesis of a Water-Soluble Conjugated Polymer Based on Thiophene for an Aqueous-Processed Hybrid Photovoltaic and Photodetector Device [J].

Wei, Haotong ;

Jin, Gan ;

Wang, Lei ;

Hao, Li ;

Na, Tianyi ;

Wang, Yan ;

Tian, Wenjing ;

Sun, Haizhu ;

Zhang, Hongxing ;

Wang, Haiyu ;

Zhang, Hao ;

Yang, Bai .

ADVANCED MATERIALS, 2014, 26 (22) :3655-3661

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