Zhang Jun, Zhi Fupeng, Hou Wei, Zhang Long, Huo Ting, Gu Rongqi, Fan Rong, Wang Xin, Ren Guopei, Wang Huizhu, Kong Weishuo, Ran Haifan, Jiang Feifei, Bian Ruiting, Wen Jiahang, Guo Lei, Jiao Zhongyi, Kang Guojian, Chen Zhenbin
School of Metallurgical Engineering, Lanzhou Resource and Environment VOC-TECH University, 730021, Lanzhou, Gansu, China.
Department Multi-Functional New Material Development Laboratory, Yellow River Basin Ecotope Integration of Industry and Education Research Institute, 730050, Lanzhou, Gansu, China.
Chemistry. 2024 Oct 11;30(57):e202402450. doi: 10.1002/chem.202402450. Epub 2024 Sep 24.
Spent adsorbents for recycling as catalysts have drawn considerable attention due to their environmentally benign chemistry properties. However, traditional thermocatalytic strategies limit their applications. Here, we developed an enhanced photocatalytic strategy to expand the range of their applications. A magnetic chitosan/ZrO composites (MZT) for V(V) adsorption, which were prepared using chitosan, ZrO and FeO by one-pot synthesis. The spent MZT as a catalyst was used to synthesize 2-phenyl-1H-benzo[d]imidazole, yielding up to 89.7 %. It also was implemented to photocatalysis reactions for recycle. The discolored rates of rhodamine B (RhB) were 72.3 % and 97.4 % by new and spent MZT, respectively. The new and spent MZT showed the forbidden bands were 251 nm and 561 nm, respectively. The result displayed spent MZT red shifted to the cyan light region. The mechanism of catalysis also has been studied in detail.
用于回收作为催化剂的废吸附剂因其环境友好的化学性质而备受关注。然而，传统的热催化策略限制了它们的应用。在此，我们开发了一种增强的光催化策略以扩大其应用范围。通过壳聚糖、ZrO和FeO一锅法合成了用于吸附V(V)的磁性壳聚糖/ZrO复合材料（MZT）。用过的MZT作为催化剂用于合成2-苯基-1H-苯并[d]咪唑，产率高达89.7%。它还被用于光催化反应以进行循环利用。新的和用过的MZT对罗丹明B（RhB）的脱色率分别为72.3%和97.4%。新的和用过的MZT的禁带分别为251 nm和561 nm。结果表明用过的MZT红移至青光区域。催化机理也已得到详细研究。
