REDOX MEDIATOR, AND PHOTOCATALYST SYSTEM

• Main Authors: SEKIZAWA KEITA, KUDO AKIHIKO, MORIKAWA KENJI, MORI TOMIKO, YAMAGUCHI YUICHI, YOSHINO JUNYA
• Format: Patent
• Language: English; Japanese
• Published: 23.05.2022
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS THEREOF; INORGANIC CHEMISTRY; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

To provide a redox mediator capable of improving a production amount of a desired reduction product, and to provide a photocatalyst system thereof.SOLUTION: A redox mediator 4 that transmits electrons between an oxidation photocatalyst particle 2 and a reduction photocatalyst particle 3 comprises a metal complex redox mediator represented by the following general formula: where M represents at least one metal selected from metals belonging to any of the groups 6 to 12 of the periodic table, Ra represents CnH2n+1 (n=1 to 5), and Rb, Rc, Rd, Re and Rf each comprise a metal complex redox mediator represented by CnH2n+1 (n=0 to 5) or CmH2mX (m=0 to 4, and X is CH2OH or COOH).SELECTED DRAWING: Figure 1 【課題】所望する還元生成物の生成量を向上可能なレドックスメディエータ、及び光触媒システムを提供する。【解決手段】酸化光触媒粒子２と還元光触媒粒子３との間で電子を伝達するレドックスメディエータ４で、下記一般式JPEG2022077351000012.jpg45134（式中、Ｍは周期表の第６族から第１２族のいずれかに属する金属から選択される少なくとも１つの金属であり、Ｒａは、ＣｎＨ２ｎ＋１（ｎ＝１～５）であり、Ｒｂ、Ｒｃ、Ｒｄ、Ｒｅ、Ｒｆは、ＣｎＨ２ｎ＋１（ｎ＝０～５）又はＣｍＨ２ｍＸ（ｍ＝０～４、Ｘ：ＣＨ２ＯＨ又はＣＯＯＨ））で表される金属錯体レドックスメディエータを含む。【選択図】図１