Your browser doesn't support javascript.
loading
Spontaneous Formation of Noble- and Heavy-Metal-Free Alloyed Semiconductor Quantum Rods for Efficient Photocatalysis.
Chen, Dechao; Zhang, Huayang; Li, Yunguo; Pang, Yingping; Yin, Zongyou; Sun, Hongqi; Zhang, Lai-Chang; Wang, Shaobin; Saunders, Martin; Barker, Emily; Jia, Guohua.
Afiliação
  • Chen D; Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, WA, 6845, Australia.
  • Zhang H; Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Curtin University, GPO Box U1987, WA, 6845, Australia.
  • Li Y; Faculty of Mathematical and Physical Sciences, University College London, Gower Street, London, WC1E 6BT, UK.
  • Pang Y; Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, WA, 6845, Australia.
  • Yin Z; Research School of Chemistry, The Australian National University, Canberra, Australian Capital Territory, 2601, Australia.
  • Sun H; School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia.
  • Zhang LC; School of Engineering, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA, 6027, Australia.
  • Wang S; Department of Chemical Engineering and CRC for Contamination Assessment and Remediation of the Environment (CRC CARE), Curtin University, GPO Box U1987, WA, 6845, Australia.
  • Saunders M; Centre for Microscopy, Characterization and Analysis (CMCA), The University of Western Australia, Perth, WA, 6009, Australia.
  • Barker E; Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, WA, 6845, Australia.
  • Jia G; Curtin Institute of Functional Molecules and Interfaces, School of Molecular and Life Sciences, Curtin University, GPO Box U1987, WA, 6845, Australia.
Adv Mater ; 30(39): e1803351, 2018 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-30059172
ABSTRACT
Quasi-1D cadmium chalcogenide quantum rods (QRs) are benchmark semiconductor materials that are combined with noble metals to constitute QR heterostructures for efficient photocatalysis. However, the high toxicity of cadmium and cost of noble metals are the main obstacles to their widespread use. Herein, a facile colloidal synthetic approach is reported that leads to the spontaneous formation of cadmium-free alloyed ZnSx Se1-x QRs from polydisperse ZnSe nanowires by alkylthiol etching. The obtained non-noble-metal ZnSx Se1-x QRs can not only be directly adopted as efficient photocatalysts for water oxidation, showing a striking oxygen evolution capability of 3000 µmol g-1 h-1 , but also be utilized to prepare QR-sensitized TiO2 photoanodes which present enhanced photo-electrochemical (PEC) activity. Density functional theory (DFT) simulations reveal that alloyed ZnSx Se1-x QRs have highly active Zn sites on the (100) surface and reduced energy barrier for oxygen evolution, which in turn, are beneficial to their outstanding photocatalytic and PEC activities.

Similares

MEDLINE

...
LILACS

LIS

Texto completo: Disponível Coleções: Bases de dados internacionais Base de dados: MEDLINE Idioma: Inglês Revista: Adv Mater Assunto da revista: Biofísica / Química Ano de publicação: 2018 Tipo de documento: Artigo País de afiliação: Austrália