光催化制氢提供了建立可持续能源经济的替代途径。虽然许多光敏材料显示出从水中产生氢的潜力,通过以异质结形式结合具有互补性质的两种不同材料所实现的协同作用可以显著地实现它们的光催化活性。我们的研究描述了由RuO2/N组成的金属-有机骨架衍生(MOF)金属氧化物异质结的设计和生成,S-TiO2。RuO2/N,S-TiO2是通过MOFs的热解产生的,Ru-HKUST-1和氨基官能化的MIL-125-NH2。在各种RuO2/N中,S-TiO2材料测试,以最低RuO2含量为特征的材料,表现出最高的氢析出速率,在纯水中产生10,761μmol·hr-1·g-1的氢,表观量子产率为10.0%。除了RuO2/N,S-TiO2,我们产生了另外两个MOF衍生的金属氧化物异质结,ZnO/N,S-TiO2和In2O3/N,S-TiO2,导致0.7%和0.3%的表观量子产率,分别。在RuO2/N中观察到显著的光催化活性,S-TiO2被认为是由于金属氧化物固有的金属性能的组合产生的协同效应,他们的乐队对齐,孔隙度,和从父MOF继承的曲面属性。RuO2/N的光催化效率,S-TiO2在实际水样中得到了进一步证明,在自来水中以8,190μmol·hr-1·g-1的速率生产氢气。
Photocatalytic hydrogen production offers an alternative pathway to establish a sustainable energy economy. While numerous photoactive materials exhibit potential for generating hydrogen from water, the synergy achieved by combining two different materials with complementary properties in the form of
heterojunctions can significantly their photocatalytic activity. Our study describes the design and generation of the metal-organic framework-derived (MOF) metal oxide heterojunction composed of RuO2/N,S-TiO2. The RuO2/N,S-TiO2 is generated through the pyrolysis of MOFs, Ru- HKUST-1, and the amino-functionalized MIL-125-NH2. Among the various RuO2/N,S- TiO2 materials tested, the material characterized by the lowest RuO2 content, exhibited the highest hydrogen evolution rate, producing 10,761 μmol·hr-1·g-1 of hydrogen with an apparent quantum-yield of 10.0% in pure water. In addition to RuO2/N,S-TiO2, we generated two other MOF-derived metal-oxide
heterojunctions, ZnO/N,S-TiO2 and In2O3/N,S-TiO2, leading to apparent quantum yields of 0.7% and 0.3%, respectively. The remarkable photocatalytic activity observed in RuO2/N,S-TiO2 is thought to be attributed to the synergistic effects arising from the combination of metallic properties inherent in the metal oxides, their band alignment, porosity, and surface properties inherited from the parent MOFs. The photocatalytic efficiency of RuO2/N,S-TiO2 was further demonstrated in actual water samples, producing hydrogen with a rate of 8,190 μmol·hr-1·g-1 in tap water.