Photocatalytic activity of TiO2 nanoparticles in hydrothermal and supercritical water

被引：5
|
作者：
Kometani, Noritsugu [1 ]
Sugimoto, Kazumi [1 ]
Fujita, Akiyo [1 ]
Yonezawa, Yoshiro [1 ]
机构：
[1] Osaka City Univ, Grad Sch Engn, Dept Appl Chem, Sumiyoshi Ku, Osaka 5588585, Japan
来源：
JOURNAL OF CHEMICAL ENGINEERING OF JAPAN | 2007年 / 40卷 / 06期
关键词：
supercritical water; photocatalysis; titanium dioxide; nanoprticle; silver; SILVER; PARTICLES; CELL;
D O I：
10.1252/jcej.40.463
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The photocatalytic reduction of Ag+ ions by TiO2 nanoparticles was examined in water under high-temperature high-pressure conditions of T = 25-400 degrees C and P = 30 MPa. The analysis of the reaction by uv-vis absorption spectroscopy, the atomic absorption spectrometry, and TEM observations revealed that the efficient photocatalytic activity compared with that at room temperature remained even under hydrothermal and supercritical conditions. These results could open the way to new applications of TiO2 under extreme environments which have never been explored before.
引用
收藏
页码：463 / 467
页数：5
相关论文
共 50 条
  • [1] Green synthesis of photocatalytic TiO2/Ag nanoparticles for an efficient water remediation
    Cantarella, Maria
    Mangano, Marco
    Zimbone, Massimo
    Sfuncia, Gianfranco
    Nicotra, Giuseppe
    Scalisi, Elena Maria
    Brundo, Maria Violetta
    Pellegrino, Anna Lucia
    Giuffrida, Federico
    Privitera, Vittorio
    Impellizzeri, Giuliana
    JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY, 2023, 443
  • [2] Preparation, characterization and photocatalytic activity of TiO2 microspheres decorated by bimetallic nanoparticles
    Grabowska, E.
    Marchelek, M.
    Klimczuk, T.
    Lisowski, W.
    Zaleska-Medynska, A.
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2016, 424 : 241 - 253
  • [3] Selectivity of gold nanoparticles on the photocatalytic activity of TiO2 for the hydroxylation of benzene by water
    Marino, Tiziana
    Molinari, Raffaele
    Garcia, Hermenegildo
    CATALYSIS TODAY, 2013, 206 : 40 - 45
  • [4] Hydrothermal Synthesis and Photocatalytic Activity of Anatase TiO2 Nanofiber
    Supothina, S.
    Rattanakam, R.
    Tawkaew, S.
    JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2012, 12 (06) : 4998 - 5003
  • [5] Photocatalytic activity of TiO2 nanorods, nanowires and nanoflowers filled with TiO2 nanoparticles
    Zhao, Qing-Er
    Wen, Wei
    Xia, Yu
    Wu, Jin-Ming
    THIN SOLID FILMS, 2018, 648 : 103 - 107
  • [6] Continuous supercritical hydrothermal synthesis of controlled size and highly crystalline anatase TiO2 nanoparticles
    Kawasaki, Shin-ichiro
    Xiuyi, Yan
    Sue, Kiwamu
    Hakuta, Yukiya
    Suzuki, Akira
    Arai, Kunio
    JOURNAL OF SUPERCRITICAL FLUIDS, 2009, 50 (03) : 276 - 282
  • [7] Effect of silver deposition on photocatalytic activity of TiO2
    Liu, SX
    Qu, ZP
    Han, XW
    Sun, CL
    Bao, XH
    CHINESE JOURNAL OF CATALYSIS, 2004, 25 (02) : 133 - 137
  • [8] Ionic liquid assisted hydrothermal synthesis of TiO2 nanoparticles: photocatalytic and antibacterial activity
    Manjunath, Kristappagari
    Yadav, Lakshmi Sagar Reddy
    Jayalakshmi, Thummala
    Reddy, Viswanath
    Rajanaika, Hanumanthappa
    Nagaraju, Ganganagappa
    JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2018, 7 (01): : 7 - 13
  • [9] Enhanced Photocatalytic Activity of TiO2 Nanoparticles Supported on Electrically Polarized Hydroxyapatite
    Zhang, Xuefei
    Yates, Matthew Z.
    ACS APPLIED MATERIALS & INTERFACES, 2018, 10 (20) : 17232 - 17239
  • [10] Flame synthesis of TiO2 nanoparticles with high photocatalytic activity
    Akurati, Kranthi K.
    Vital, Andri
    Fortunato, Giuseppino
    Hany, Roland
    Nueesch, Frank
    Graule, Thomas
    SOLID STATE SCIENCES, 2007, 9 (3-4) : 247 - 257
12345