The sol-gel synthesis and photocatalytic activity of Gd-SiO2-TiO2 photocatalyst

被引：23
作者：
Feng, Hongwei [1 ]
Xu, Hui [2 ]
Feng, Hongtu [3 ]
Gao, Ying [4 ]
Jin, Xinyuan [5 ]
机构：
[1] Yulin Univ, Sch Energy Engn, Yulin 719000, Peoples R China
[2] Yulin Univ, Sch Chem & Chem Engn, Yulin 719000, Peoples R China
[3] Yulin Univ, Sch Foreign Languages, Yulin 719000, Peoples R China
[4] Yulin Univ, Sch Math & Stat, Yulin 719000, Peoples R China
[5] Wenzhou Univ, Oujiang Coll, Wenzhou 325035, Peoples R China
来源：
CHEMICAL PHYSICS LETTERS | 2019年 / 733卷
关键词：
Gd-SiO2-TiO2; Photocatalyst; Sol-gel method; TIO2; PHOTOCATALYSIS; DEGRADATION; LA; PERFORMANCE; COMPOSITE; NANOCOMPOSITES; DECOMPOSITION; NANOPARTICLES; OXIDATION; PR;
D O I：
10.1016/j.cplett.2019.136676
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：
The sol-gel method was used to synthesize Gd-SiO2-TiO2 composite photocatalysts. When the doping amounts of Si and Gd reached 9.1 mol% and 0.2 mol% respectively, the sample showed the optimal photocatalytic activity during the methylene blue (MB) degradation. When the calcination temperature was lower than 550 degrees C, Gd-SiO2-TiO2 photocatalyst has an anatase crystal structure. After doping of Si and Gd, the absorption wavelength thresholds of the sample approached 407 nm with the energy gap of 3.05 eV. Gd-SiO2-TiO2 photocatalyst showed the degradation efficiency about 90% to methylene blue (MB) under irradiation of simulated sunlight.
引用
收藏
页数：5
相关论文
共 32 条
  • [1] Synthesis and characterization of sulfur-titanium dioxide nanocomposites for photocatalytic oxidation of cyanide using visible light irradiation
    Baeissa, E. S.
    [J]. CHINESE JOURNAL OF CATALYSIS, 2015, 36 (05) : 698 - 704
  • [2] Solar photocatalytic purification of water with Ce-doped TiO2/clay heterostructures
    Belver, C.
    Bedia, J.
    Alvarez-Montero, M. A.
    Rodriguez, J. J.
    [J]. CATALYSIS TODAY, 2016, 266 : 36 - 45
  • [3] Combined TiO2/SiO2 mesoporous photocatalysts with location and phase controllable TiO2 nanoparticles
    Beyers, E.
    Biermans, E.
    Ribbens, S.
    De Witte, K.
    Mertens, M.
    Meynen, V.
    Bals, S.
    Van Tendeloo, G.
    Vansant, E. F.
    Cool, P.
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2009, 88 (3-4) : 515 - 524
  • [4] PHOTOELECTROLYSIS AND PHYSICAL-PROPERTIES OF SEMICONDUCTING ELECTRODE WO3
    BUTLER, MA
    [J]. JOURNAL OF APPLIED PHYSICS, 1977, 48 (05) : 1914 - 1920
  • [5] Noble-metal-free NiO@Ni-ZnO/reduced graphene oxide/CdS heterostructure for efficient photocatalytic hydrogen generation
    Chen, Fayun
    Zhang, Laijun
    Wang, Xuewen
    Zhang, Rongbin
    [J]. APPLIED SURFACE SCIENCE, 2017, 422 : 962 - 969
  • [6] TiO2 photocatalysis and related surface phenomena
    Fujishima, Akira
    Zhang, Xintong
    Tryk, Donald A.
    [J]. SURFACE SCIENCE REPORTS, 2008, 63 (12) : 515 - 582
  • [7] Hydrothermal preparation of MoS2/TiO2/Si nanowires composite with enhanced photocatalytic performance under visible light
    Hamdi, Abderrahmane
    Boussekey, Luc
    Roussel, Pascal
    Addad, Ahmed
    Ezzaouia, Hatem
    Boukherroub, Rabah
    Coffinier, Yannick
    [J]. MATERIALS & DESIGN, 2016, 109 : 634 - 643
  • [8] Two-step synthesis and visible-light-driven photocatalytic water oxidation activity of AW(O,N)3 (A = Sr, La, Pr, Nd and Eu) perovskites
    Kawashima, Kenta
    Hojamberdiev, Mirabbos
    Wagata, Hajime
    Zahedi, Ehsan
    Yubuta, Kunio
    Domen, Kazunari
    Teshima, Katsuya
    [J]. JOURNAL OF CATALYSIS, 2016, 344 : 29 - 37
  • [9] Photodegradation of volatile organic compounds using zirconium-doped TiO2/SiO2 visible light photocatalysts
    Kim, Chan-Soo
    Shin, Jung-Woo
    An, Sang-Hun
    Jang, Hee-Dong
    Kim, Tae-Oh
    [J]. CHEMICAL ENGINEERING JOURNAL, 2012, 204 : 40 - 47
  • [10] Characterization and photocatalytic performance of La and C co-doped anatase TiO2 for photocatalytic reduction of Cr(VI)
    Lei, X. F.
    Chen, C.
    Li, X.
    Xue, X. X.
    Yang, H.
    [J]. SEPARATION AND PURIFICATION TECHNOLOGY, 2016, 161 : 8 - 15
1234