Enormous enhancement in photocatalytic performance of Ag3PO4HAp composite A Z-scheme mechanism insight》.pdf

Applied Catalysis B: Environmental 179 (2015) 29–36 Contents lists available at ScienceDirect Applied Catalysis B: Environmental j o u rn al h omepage: w w w. elsev /locate/apc atb Enormous enhancement in photocatalytic performance of Ag3 PO4 /HAp composite: A Z-scheme mechanism insight Yuanyuan Chai, Jing Ding, Li Wang, Qianqian Liu, Jia Ren, Wei-Lin Dai ∗ Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University, Shanghai 200433, PR China a r t i c l e i n f o a b s t r a c t Article history: For the first time, the Ag PO /HAp composite catalysts were synthesized through a facile in-situ ion 3 4 Received 9 March 2015 exchange method and carefully studied by various techniques including XRD, BET, SEM TEM, DRS, ICP, Received in revised form 30 April 2015 XPS, ESR, and photocurrent measurements. It was found that the well dispersed small Ag3 PO4 particles Accepted 3 May 2015 were loaded on the HAp support, and the surface area was slightly increased after the ion exchange Available online 5 May 2015 process. Importantly, the coupling of the Ag3 PO4 and HAp significantly enhanced the separation efficiency of the photogenerated electron–hole pairs and then promoted the activity for the photodegradation of Keywords: