【摘要】 采用高温煅烧、水热等方法制备了不同复合比的MoS₂/H-TiO₂-40二元材料．相比P25和氢化TiO₂，在模拟太阳光照射下，MoS₂/H-TiO₂-40二元复合材料在亚甲基蓝（MB）的去除实验中表现出更优异的光催化性能．30%MoS₂/H-TiO₂-40（MHT-30%）光催化剂在4 h内对MB的去除率达到95%．此外，MHT-30%催化剂的动力学常数分别为P25、MoS₂、HT的5.6、3.6、2.5倍．光催化反应前后MHT-30%的重复降解研究和组分分析表明，MHT-30%光催化剂具有良好的稳定性，在4个循环中，MB的去除率仍达到88%. MHT-30%光催化性能的改善和稳定可归因于MoS₂和HT之间的能带匹配和紧密的界面结合，从而加速了电子转移并拓宽了可见光响应范围．更多还原

【Abstract】 MoS₂/H-TiO₂-40 binary materials with different composite ratios were prepared by solvent heat method. Under simulated sunlight irradiation,MoS₂/H-TiO₂-40 binary composites in the removal test of methylene blue（ MB） displayed more excellent photocatalytic performance than HT and P25 sample. A removal efficiency of MB reached 95% within 4 h over MHT-30% photocatalyst. Moreover,the kinetic constant of MHT-30% catalyst was 5. 6,3. 6 and 2. 5 times as much as that of P25,MoS₂ and HT. In addition,the repeated degradation study and composition analysis of MHT-30% before and after photocatalytic reaction showed that MHT-30% photocatalyst exhibited good stability,and the removal rate of MB still reached 88% in four cycles. The improved and stable photocatalytic performance of MHT-30% can be attributed to band matching and tight interface bonding between MoS₂ and HT,which accelerated the electron transfer and broaden the visible light response range.更多还原