Supramolecular Systems for Photocatalytic Hydrogen Evolution from Water

Artificial photosynthesis;Water splitting;Photocatalytic hydrogen evolution;Self-healing;Metal-organic framework;Self-assembly;Ir(III) complex;Hydrogel;620

공과대학 재료공학부 ;

University:서울대학교 대학원

关键词: Artificial photosynthesis;    Water splitting;    Photocatalytic hydrogen evolution;    Self-healing;    Metal-organic framework;    Self-assembly;    Ir(III) complex;    Hydrogel;    620;   

Others  :  http://s-space.snu.ac.kr/bitstream/10371/123371/1/000000132692.pdf

美国|英语

来源: Seoul National University Open Repository

【 摘 要 】

in homogeneous counterpart, the molecular catalyst became Pt colloid just after 7.5 h. It was revealed that the arrangement of diimine sites which closely and densely surround the H2-evolving catalyst in the MOF enabled such a highly efficient self-healing.In Chapter 3, an amphiphilic Ir(III) complex was synthesized and shown to form supramolecular assembly in water via hydrophobic collapse. Interestingly, when sodium chloride salt was added to induce the charge screening effect, electrostatic repulsion between self-assembled structures became weaker and the solution became a hydrogel. More importantly, this hydrogel was effective for photocatalytic hydrogen evolution as it could incorporate all necessary components such as water, photosensitizer, catalyst, and sacrificial reducing agent.