双助催化剂对BiVO光催化降解卡马西平活性的协同作用。
Synergetic effect of dual co-catalysts on the activity of BiVO for photocatalytic carbamazepine degradation.
作者信息
Wang Beibei, Li Ping, Du Chunlei, Wang Yan, Gao Daxin, Li Songtao, Zhang Liying, Wen Fuyu
机构信息
Educational Technology Center, Chengde Medical University Chengde 067000 China.
Hebei Key Laboratory of Research and Development for Traditional Chinese Medicine, Chengde Medical University Chengde 067000 China
出版信息
RSC Adv. 2019 Dec 17;9(71):41977-41983. doi: 10.1039/c9ra07152k. eCollection 2019 Dec 13.
An efficient visible-light driven three components photocatalyst for carbamazepine (CBZ) degradation has been assembled by co-loading reduction cocatalyst Pt and oxidation cocatalyst CoO (MnO ) on BiVO. The apparent rate constant of the three components photocatalyst Pt/BiVO/CoO for degradation of CBZ is 54 times that of CoO/BiVO and 2.5 times that of Pt/BiVO, which shows a synergetic effect in the photocatalytic activity. The same synergetic effect is also observed for Pt/BiVO/MnO . The spatial separation of the reduction and oxidation cocatalysts could reduce the recombination of the photogenerated charges, which mainly accounts for the high photocatalytic activity of the three components photocatalyst. The photocatalytic intermediates of CBZ were detected by HPLC-ESI-MS, and a deductive degradation pathway of CBZ was proposed.
通过在BiVO上共负载还原助催化剂Pt和氧化助催化剂CoO（MnO ），组装了一种用于降解卡马西平（CBZ）的高效可见光驱动三组分光催化剂。三组分光催化剂Pt/BiVO/CoO降解CBZ的表观速率常数是CoO/BiVO的54倍，是Pt/BiVO的2.5倍，这表明其在光催化活性方面具有协同效应。在Pt/BiVO/MnO 中也观察到了相同的协同效应。还原和氧化助催化剂的空间分离可以减少光生电荷的复合，这是三组分光催化剂具有高光催化活性的主要原因。通过HPLC-ESI-MS检测了CBZ的光催化中间体，并提出了CBZ的推导降解途径。
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