Fabrication of novel perovskite-type Sr2Ta(Fe1-xGax)O6 nanoparticles with high visible-light photocatalytic activity

被引：4
作者：
Wang, Jianan [1 ]
Yang, Honghui [1 ]
Lv, Wei [1 ]
Yan, Wei [1 ,2 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
[2] Xi An Jiao Tong Univ, State Key Lab Multiphase Flow Power Engn, Xian 710049, Peoples R China
来源：
RSC ADVANCES | 2015年 / 5卷 / 36期
关键词：
ELECTRONIC-STRUCTURE; DEGRADATION; MAGNETORESISTANCE; METAL; FE; LA;
D O I：
10.1039/c5ra01460c
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Novel Sr2Ta(Fe1-xGax)O-6 perovskite photocatalysts were successfully synthesized by a simple one-step sol-gel method and characterized for structural, morphological and optical properties by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), dynamic light scattering (DLS), Brunauer Emmett Teller (BET) and UV-visible (UV-vis) diffused reflectance spectroscopy (DRS), respectively. A sample of Sr2Ta(Fe0.8Ga0.2)O-6 calcined at 900 degrees C for 10 h exhibited the highest photocatalytic activity, and the photodegradation rate of methylene blue (MB) achieved 96.2% after 2 h visible light irradiation. The enhanced photocatalytic performance and outstanding stability were attributed to the appropriate crystallinity, Ga3+ doping content and the special perovskite structure. This Ga-doping created impurity levels in the forbidden band, which shortened the band gap and generated more photoactive sites to facilitate photocatalytic activity.
引用
收藏
页码：28679 / 28686
页数：8
相关论文
共 32 条
  • [1] Synthesis of TiO2/WO3 nanoparticles via sonochemical approach for the photocatalytic degradation of methylene blue under visible light illumination
    Anandan, Sambandam
    Sivasankar, Thirugnanasambandam
    Lana-Villarreal, Teresa
    [J]. ULTRASONICS SONOCHEMISTRY, 2014, 21 (06) : 1964 - 1968
  • [2] Semiconductor-based Photocatalytic Hydrogen Generation
    Chen, Xiaobo
    Shen, Shaohua
    Guo, Liejin
    Mao, Samuel S.
    [J]. CHEMICAL REVIEWS, 2010, 110 (11) : 6503 - 6570
  • [3] Three-dimensional Gd-doped TiO2 fibrous photoelectrodes for efficient visible light-driven photocatalytic performance
    Choi, Junghyun
    Sudhagar, P.
    Lakshmipathiraj, P.
    Lee, Jung Woo
    Devadoss, Anitha
    Lee, Sangkyu
    Song, Taeseup
    Hong, Seungki
    Eito, S.
    Terashima, C.
    Han, Tae Hee
    Kang, Jeung Ku
    Fujishima, A.
    Kang, Yong Soo
    Paik, Ungyu
    [J]. RSC ADVANCES, 2014, 4 (23) : 11750 - 11757
  • [4] Photo-assisted synthesis of Ag3PO4/reduced graphene oxide/Ag heterostructure photocatalyst with enhanced photocatalytic activity and stability under visible light
    Cui, Can
    Wang, Yaping
    Liang, Dayu
    Cui, Wei
    Hu, Haihua
    Lu, Bingqing
    Xu, Sheng
    Li, Xiaoyun
    Wang, Chong
    Yang, Yu
    [J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2014, 158 : 150 - 160
  • [5] Neutron diffraction study of the influence of structural disorder on the magnetic properties of Sr(2)FeMO(6) (M=Ta, Sb)
    Cussen, EJ
    Vente, JF
    Battle, PD
    Gibb, TC
    [J]. JOURNAL OF MATERIALS CHEMISTRY, 1997, 7 (03) : 459 - 463
  • [6] Synthesis of micro-nano heterostructure AgBr/ZnO composite for advanced visible light photocatalysis
    Dai, Kai
    Lv, Jiali
    Lu, Luhua
    Liu, Qi
    Zhu, Guangping
    Li, Dongpei
    [J]. MATERIALS LETTERS, 2014, 130 : 5 - 8
  • [7] Core-shell structure of metal loaded CdS-SiO2 hybrid nanocomposites for complete photomineralization of methyl orange by visible light
    Gupta, Nidhi
    Pal, Bonamali
    [J]. JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2014, 391 : 158 - 167
  • [8] Combining the Photocatalyst Pt/TiO2 and the Nonphotocatalyst SnPd/Al2O3 for Effective Photocatalytic Purification of Groundwater Polluted with Nitrate
    Hirayama, Jun
    Kamiya, Yuichi
    [J]. ACS CATALYSIS, 2014, 4 (07): : 2207 - 2215
  • [9] Photocatalytic activities of LaFeO3 and La2FeTiO6 in p-chlorophenol degradation under visible light
    Hu, Ruisheng
    Li, Chun
    Wang, Xin
    Sun, Yan
    Jia, Haixia
    Su, Haiquan
    Zhang, Yulong
    [J]. CATALYSIS COMMUNICATIONS, 2012, 29 : 35 - 39
  • [10] Relationship between Cation Arrangement and Photocatalytic Activity for Sr-Al-Nb-O Double Perovskite
    Iwakura, Hironori
    Einaga, Hisahiro
    Teraoka, Yasutake
    [J]. INORGANIC CHEMISTRY, 2010, 49 (24) : 11362 - 11369
1234