Synthesis of Highly Dispersed Platinum Nanoparticles on Ti-Containing Mesoporous Silica Using Photo-Assisted Deposition

被引：11
|
作者：
Shironita, Sayoko [1 ]
Mori, Kohsuke [1 ]
Ohmichi, Tetsutaro [1 ]
Taguchi, Eiji [2 ]
Mori, Hirotaro [2 ]
Yamashita, Hiromi [1 ]
机构：
[1] Osaka Univ, Grad Sch Engn, Div Mat & Mfg Sci, Suita, Osaka 5650871, Japan
[2] Osaka Univ, Res Ctr Ultrahigh Voltage Elect Microscopy, Ibaraki, Osaka 5670047, Japan
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2009年 / 9卷 / 01期
关键词：
Single-Site Photocatalyst; Platinum Nanoparticle; Photo-Assisted Deposition; Nano-Sized Metal; NO Reduction; SHAPE-CONTROLLED SYNTHESIS; PHOTOCATALYTIC REACTIVITIES; TITANIUM-OXIDE; ACTIVE-SITES; ZEOLITE; OXIDATION; WATER;
D O I：
10.1166/jnn.2009.J031
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A simple and unique route to synthesize the nano-size Pt particles using mesoporous silica support including single-site Ti-oxide moiety (Ti-HMS) under UV-light irradiation has been developed. By the photo-assisted deposition (PAD) method, a Pt precursor can be deposited from aqueous solution of H2PtCl6 directly on the photo-excited isolated Ti-oxide moiety. The subsequent reduction with H-2 generates the nano-sized Pt metal particles (PAD-Pt/Ti-HMS). The deposition of Pt precursor onto the Ti-HMS can be recognized by the observation of the decrease in the intensity of the preedge in the Ti K-edge XANES spectrum, demonstrating that the Pt precursor underwent anchoring on the single framework Ti4+ center of Ti-HMS under UV-light irradiation. The lower intensity of the Pt-Pt bono of the PAD-Pt/Ti-HMS than that of Pt foil in the Fourier transforms of Pt L-III-edge EXAFS spectra clearly suggests the formation of the Pt nanoparticles. The PAD-Pt/Ti-HMS exhibited the higher catalytic activity for the hydrogenation of nitrobenzene to aniline and the NO reduction than the catalyst prepared by the conventional impregnation.
引用
收藏
页码：557 / 561
页数：5
相关论文
共 50 条
  • [21] Photo-assisted synthesis of V and Ti-containing MCM-41 under UV light irradiation and their reactivity for the photooxidation of propane
    Hu, Yun
    Wada, Noriko
    Tsujimaru, Koichiro
    Anpo, Masakazu
    CATALYSIS TODAY, 2007, 120 (02) : 139 - 144
  • [22] Preparation of nano-sized platinum metal catalyst using photo-assisted deposition method on mesoporous silica including single-site photocatalyst
    Shironita, Sayoko
    Mori, Kohsuke
    Shimizu, Toshiaki
    Ohmichi, Tetsutaro
    Mimura, Naoki
    Yamashita, Hiromi
    APPLIED SURFACE SCIENCE, 2008, 254 (23) : 7604 - 7607
  • [23] Facile synthesis of efficient and selective Ti-containing mesoporous silica catalysts for toluene oxidation
    Peta, Sreenivasulu
    Zhang, Tao
    Dubovoy, Viktor
    Koh, Katherine
    Hu, Maocong
    Wang, Xianqin
    Asefa, Tewodros
    MOLECULAR CATALYSIS, 2018, 444 : 34 - 41
  • [24] Synthesis of mesoporous silica nanobamboo with highly dispersed tungsten carbide nanoparticles
    Huang, Yulin
    Deng, Fei
    Ni, Chaoying
    Chen, Jingguang G.
    Vlachos, Dionisios G.
    DALTON TRANSACTIONS, 2012, 41 (23) : 6914 - 6918
  • [25] Synthesis of Ti-containing silica mesoporous molecular sieves with high catalytic activity for epoxidation
    Ren, Y
    Qian, LP
    Yue, B
    He, HY
    CHINESE JOURNAL OF CATALYSIS, 2003, 24 (12) : 947 - 950
  • [26] Synthesis of stable Ti-containing mesoporous tubular membrane using silicalite-1 nanoparticles as seeds
    Wang, Xiaobin
    Meng, Bo
    Zhang, Xiongfu
    Tan, Xiaoyao
    Liu, Shaomin
    CHEMICAL ENGINEERING JOURNAL, 2014, 255 : 344 - 355
  • [27] Preparation and catalysis of nano-sized eetal (Pd,Pt) catalysts deposited on Ti-containing zeolite materials by a photo-assisted deposition (PAD) method
    Mori, Kohsuke
    Miura, Yuuki
    Shironita, Sayoko
    Tomonari, Masanori
    Mimura, Naoki
    Yamashita, Hiromi
    FROM ZEOLITES TO POROUS MOF MATERIALS: THE 40TH ANNIVERSARY OF INTERNATIONAL ZEOLITE CONFERENCE, PROCEEDINGS OF THE 15TH INTERNATIONAL ZEOLITE CONFERENCE, 2007, 170 : 1319 - 1324
  • [28] Photo-induced super-hydrophilic property and photocatalysis on Ti-containing mesoporous silica thin films
    Nishio, S
    Tanaka, T
    Tada, H
    Nishiyama, N
    Fujii, H
    Ohmichi, T
    Katayama, I
    Yamashita, H
    MOLECULAR SIEVES: FROM BASIC RESEARCH TO INDUSTRIAL APPLICATIONS, PTS A AND B, 2005, 158 : 1605 - 1612
  • [29] Synthesis and surface properties of Ti-containing mesoporous aluminophosphates. A comparison with Ti-grafted mesoporous silica Ti-MCM-41
    Gianotti, E
    Oliveira, EC
    Coluccia, S
    Pastore, HO
    Marchese, L
    INORGANICA CHIMICA ACTA, 2003, 349 : 259 - 264
  • [30] Synthesis of Pd nanoparticles on heteropolyacid-supported silica by a photo-assisted deposition method: an active catalyst for the direct synthesis of hydrogen peroxide
    Mori, Kohsuke
    Furubayashi, Ken
    Okada, Shusuke
    Yamashita, Hiromi
    RSC ADVANCES, 2012, 2 (03) : 1047 - 1054
12345