화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.24, 161-165, April, 2015
DOI10.1016/j.jiec.2014.09.024  Export Citation
Enhanced solar photocatalytic activity of Er3+:YAlO3-loaded BiPO4 composite
Yunfan Zhang, Rengaraj Selvaraj1, †, Mika Sillanpaa†, Younghun Kim2, and Cheuk-Wai Tai3
  • Laboratory of Green Chemistry, Faculty of Technology, Lappeenranta University of Technology, Mikkeli FI-50100, Finland
  • 1Department of Chemistry, College of Science, Sultan Qaboos University, O. Box. 36., P.C. 123, Al-Khoudh, Muscat, Oman
  • 2Department of Chemical Engineering, Kwangwoon University, Seoul 139-701, Korea
  • 3Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, S-106 91 Stockholm, Sweden
E-mail:,
Er3+:YAlO3 loaded BiPO4 were successfully synthesized by a simple heat treatment approach in order to enhance the photocatalytic efficiency of BiPO4. Comparing with the simple substance of BiPO4, the composite system showed the better efficiency on photodegradation of Methlyene Blue (MB) solution under a simulated solar light irradiation. The relationship between loading amount and degradation rate was also investigated. It is found that the optimal loading amount of Er3+:YAlO3 is 7 wt%. The recycling test of selected sample was carried out to study the stability of the Er3+:YAlO3 loaded BiPO4 system. The composite materials were finally characterized by field-emission scanning electron microscopy (SEM), X-ray diffraction (XRD) and UV?visible diffuse reflectance spectroscopy (UV-vis DRS). Based on the findings a possible mechanism has been proposed. The existence of luminescence agent (Er3+-doped YAlO3) and the occurrence of upconversion luminescence process have been related with the enhanced photodegradation of MB over composite system.
Keywords:BiPO4;Er3+:YAlO3;Composite;Methylene Blue;Photocatalysis;solar light
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