Shilei Xie

Publications (3)8.37 Total impact

• Article: Oxygen vacancies promoting photoelectrochemical performance of In(2)O(3) nanocubes.

  Jiayong Gan, Xihong Lu, Jingheng Wu, Shilei Xie, Teng Zhai, Minghao Yu, Zishou Zhang, Yanchao Mao, Shing Chi Ian Wang, Yong Shen, Yexiang Tong
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  ABSTRACT: This work reports a facile method for preparing the new photoactive In(2)O(3) films as well as their implementation in photoelectrochemical (PEC) application. We firstly investigated the relationship between oxygen vacancies (V(O)) and PEC performance and revealed a rule between them. We found that the optimized In(2)O(3-n) sample yielded a photocurrent density up to 3.83 mA/cm(2) in 1 M Na(2)SO(4) solution under the solar illumination. It also gave efficiency as high as 75% over 400 nm in the incident-photon-to-current-conversion efficiency (IPCE) spectrum, which is the best value for an In(2)O(3) photoanode reported. Moreover, the PEC performance of these films is enhanced as the V(O) increased and then decreased with further increasing V(O). This two-side effect means V(O) can favor the photoelectron activation, or act as recombination centers to prohibit the generation of photocurrent. Making highly photoactive In(2)O(3) nanostructures in this work will open up new opportunities in various areas.
  Scientific Reports 01/2013; 3:1021.
• Article: Porous Pr(OH)3 nanostructures as high-efficiency adsorbents for dye removal.

  Teng Zhai, Shilei Xie, Xihong Lu, Lei Xiang, Minghao Yu, Wei Li, Chaolun Liang, Cehui Mo, Feng Zeng, Tiangang Luan, Yexiang Tong
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  ABSTRACT: Herein we report the electrochemical synthesis of porous Pr(OH)(3) nanobelt arrays (NBAs), nanowire arrays (NWAs), nanowire bundles (NWBs), and nanowires (NWs) and their applications as dye absorbents in water treatment. These Pr(OH)(3) nanostructures exhibit high efficient and selective adsorption of the dyes with amine (-NH(2)) functional groups such as Congo red, reactive yellow, and reactive blue. The high efficiency and selectivity is attributed to the large effective surface area of the porous structure, plentiful hydroxyl groups, and basic sites on the Pr(OH)(3) surface. Furthermore, the toxicity studies of these porous Pr(OH)(3) nanostructure show a negligible effect on seed germination, indicating that they hold great potential as environmentally friendly absorbents in water treatment.
  Langmuir 07/2012; 28(30):11078-85. · 4.19 Impact Factor
• Article: Controllable synthesis of ZnxCd1-xS@ZnO core-shell nanorods with enhanced photocatalytic activity.

  Shilei Xie, Xihong Lu, Teng Zhai, Jiayong Gan, Wei Li, Ming Xu, Minghao Yu, Yuan-Ming Zhang, Yexiang Tong
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  ABSTRACT: We report the synthesis of Zn(x)Cd(1-x)S@ZnO nanorod arrays via a facile two-step process and the implementation of these core-shell nanorods as an environmental friendly and recyclable photocatalyst for methyl orange degradation. The band gap of Zn(x)Cd(1-x)S@ZnO core-shell nanorods can be readily tunable by adjusting the ratio of Zn/Cd during the synthesis. These Zn(x)Cd(1-x)S@ZnO core-shell nanorods exhibit a high photocatalytic activity and good stability in the degradation of the methyl orange. Moreover, these films grown on FTO substrates make the collection and recycle of the photocatalyst easier. These findings may open new opportunities for the design of effective, stable, and easy-recyclable photocatalytic materials.
  Langmuir 06/2012; 28(28):10558-64. · 4.19 Impact Factor