【摘要】 通过硫化金属有机骨架MIL-68（In）得到了In₂S₃中空多孔纳米管,利用In₂S₃的结构缺陷使片状ZnIn₂S₄晶体原位生长于其表面,制备了中空In₂S₃/ZnIn₂S₄异质结光催化剂。通过调节双组分异质结的复合比例,获得了最佳优化合成的复合材料40In₂S₃/ZnIn₂S₄（40 mg In₂S₃复合1 mmol ZnIn₂S₄）,其对铜绿假单胞菌（P.aeruginosa）表现出最佳的光催化杀菌性能,经80 m W/cm2可见光照射420 min后,无催化剂协助的情况下,超过99.6%的P.aeruginosa被灭活。经80 m W/cm²可见光照射150 min后,对甲基橙（MO）溶液的降解率可达99.5%。异质结和中空多孔纳米管构架协同增强了体系可见光吸收活性、促进了光生载流子的分离和转移,提高了材料光催化活性。同时,In₂S₃/ZnIn₂S₄分级结构中空纳米管具有良好的稳定性和可重复使用性,且有利于回收。更多还原

【Abstract】 Hollow porous In₂S₃ nanotubes were synthesized via sulfidation of the metal-organic framework MIL-68（In）. Structural defects on the In₂S₃ surface enabled the in situ growth of ultrathin ZnIn₂S₄ nanosheets, yielding a hierarchical hollow In₂S₃/ZnIn₂S₄ heterojunction photocatalyst. By optimizing the mass ratio of the two components, the composite labeled 40In₂S₃/ZnIn₂S₄（prepared from 40 mg of In₂S₃ and 1 mmol of ZnIn₂S₄） exhibited the highest photocatalytic activity. Under visible-light irradiation（80 m W/cm2）, this material achieved 99.5% degradation of methyl orange（MO） within 150 min and inactivated over 99.6% of P. aeruginosa within 420 min in the absence of any additional agents. The synergistic effects of the type-II heterojunction and the hollow porous nanotubular architecture significantly enhanced visible-light absorption, promoted efficient separation and migration of photogenerated charge carriers, and thereby boosted photocatalytic performance. Moreover, the hierarchical hollow nanostructure demonstrated excellent stability, reusability, and ease of recovery, highlighting its potential for practical applications in environmental remediation and antimicrobial disinfection.更多还原