TY - JOUR SN - 0926-3373 PB - Elsevier BV VL - 319 JF - Applied Catalysis B: Environmental TI - Unsaturated Nd-Bi dual-metal sites enable efficient NIR light-driven O2 activation for water purification Y1 - 2022/12/15/ A1 - Wang, Qiuwen A1 - Xu, Dongyu A1 - Dong, Yilin A1 - Pang, Shaoxuan A1 - Zhang, Lijun A1 - Zhang, Guangming A1 - Lv, Longyi A1 - Liu, Xiaoyang A1 - Xia, Yuguo A1 - Campos, Luiza C A1 - Ren, Zhijun A1 - Wang, Pengfei N1 - This version is the author accepted manuscript. For information on re-use, please refer to the publisher?s terms and conditions. UR - https://doi.org/10.1016/j.apcatb.2022.121924 N2 - Metal semiconductor catalysts with oxygen vacancies can make full use of near infrared light to active O2 for degradation of emerging pollutants. However, the surface oxygen vacancies can also become the combination center of electron-hole pairs, leading O2 cannot accept more electrons for activation, often becoming the bottleneck. In this study, by doping half-metal BiO2?x with Nd to form unsaturated Nd-Bi dual-metal sites as oxygen chemisorption and electron transfer sites, this bottleneck can be well solved. Systematic characterization results imply that Nd-Bi dual-metal sites can raise the center of the defect band to the Fermi level, which preserves the energy of photoexcited electrons. Thus, more electrons are driven to adsorbates for O2?- generation. Under liquid phase determination conditions, the modified sample achieves the reaction-rate constant for doxycycline degradation of 134.4 в 10?4 min?1, which is about 24.2 times higher than that of pristine BiO2?x under NIR irradiation. ID - discovery10155596 AV - public KW - Nd-Bi dual-metal sites KW - Photocatalysis KW - Molecular oxygen activation KW - NIR light KW - Emerging organic pollutants ER -