Synthesis of Ordered Porous Graphitic-C3N4 and Regularly Arranged Ta3N5 Nanoparticles by Using Self-Assembled Silica Nanospheres as a Primary Template

被引:102
作者
Fukasawa, Yuki [1 ]
Takanabe, Kazuhiro [1 ]
Shimojima, Atsushi [1 ]
Antonietti, Markus [2 ]
Domen, Kazunari [1 ]
Okubo, Tatsuya [1 ]
机构
[1] Univ Tokyo, Dept Chem Syst Engn, Bunkyo Ku, Tokyo 1138656, Japan
[2] Max Planck Inst Colloids & Interfaces, Dept Colloid Chem, D-14424 Potsdam, Germany
关键词
carbon nitride; nanoparticles; photocatalysis; silica nanospheres; tantalum nitride; VISIBLE-LIGHT IRRADIATION; CARBON NITRIDE; MESOPOROUS CARBON; AMINO-ACIDS; METAL; PHOTOCATALYST; NANOCRYSTALS; OXYNITRIDE; STRATEGY; NM;
D O I
10.1002/asia.201000523
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Uniform-sized silica nanospheres (SNSs) assembled into close-packed structures were used as a primary template for ordered porous graphitic carbon nitride (g-C3N4), which was subsequently used as a hard template to generate regularly arranged Ta3N5 nanoparticles of well-controlled size. Inverse opal g-C3N4 structures with the uniform pore size of 20-80 nm were synthesized by polymerization of cyanamide and subsequent dissolution of the SNSs with an aqueous HF solution. Back-filling of the C3N4 pores with tantalum precursors, followed by nitridation in an NH3 flow gave regularly arranged, crystalline Ta3N5 nanoparticles that are connected with each other. The surface areas of the Ta3N5 samples were as high as 60 m(2) g(-1), and their particle size was tunable from 20 to 80 nm, which reflects the pore size of g-C3N4. Polycrystalline hollow nanoparticles of Ta3N5 were also obtained by infiltration of a reduced amount of the tantalum source into the g-C3N4 template. An improved photocatalytic activity for H-2 evolution on the assembly of the Ta3N5 nanoparticles under visible-light irradiation was attained as compared with that on a conventional Ta3N5 bulk material with low surface area.
引用
收藏
页码:103 / 109
页数:7
相关论文
共 30 条
[1]   Semiconductor clusters, nanocrystals, and quantum dots [J].
Alivisatos, AP .
SCIENCE, 1996, 271 (5251) :933-937
[2]  
[Anonymous], 2006, ANGEW CHEM INT EDIT
[3]   Chemistry and properties of nanocrystals of different shapes [J].
Burda, C ;
Chen, XB ;
Narayanan, R ;
El-Sayed, MA .
CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102
[4]   Recent advances in the liquid-phase syntheses of inorganic nanoparticles [J].
Cushing, BL ;
Kolesnichenko, VL ;
O'Connor, CJ .
CHEMICAL REVIEWS, 2004, 104 (09) :3893-3946
[5]   Hierarchical nanofabrication of microporous crystals with ordered mesoporosity [J].
Fan, Wei ;
Snyder, Mark A. ;
Kumar, Sandeep ;
Lee, Pyung-Soo ;
Yoo, Won Cheol ;
McCormick, Alon V. ;
Penn, R. Lee ;
Stein, Andreas ;
Tsapatsis, Michael .
NATURE MATERIALS, 2008, 7 (12) :984-991
[6]   Growth confined by the nitrogen source: Synthesis of pure metal nitride nanoparticles in mesoporous graphitic carbon nitride [J].
Fischer, Anna ;
Antonietti, Markus ;
Thomas, Arne .
ADVANCED MATERIALS, 2007, 19 (02) :264-+
[7]   Chemical synthesis of mesoporous carbon nitrides using hard templates and their use as a metal-free catalyst for friedel-crafts reaction of benzene [J].
Goettmann, Frederic ;
Fischer, Anna ;
Antonietti, Markus ;
Thomas, Arne .
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2006, 45 (27) :4467-4471
[9]   Ta3N5 as a novel visible light-driven photocatalyst (λ<600 nm) [J].
Hitoki, G ;
Ishikawa, A ;
Takata, T ;
Kondo, JN ;
Hara, M ;
Domen, K .
CHEMISTRY LETTERS, 2002, (07) :736-737
[10]   An oxynitride, TaON, as an efficient water oxidation photocatalyst under visible light irradiation (λ ≤ 500 nm) [J].
Hitoki, G ;
Takata, T ;
Kondo, JN ;
Hara, M ;
Kobayashi, H ;
Domen, K .
CHEMICAL COMMUNICATIONS, 2002, (16) :1698-1699