Covalent grafting of molecular photosensitizer and catalyst on MOF-808: effect of pore confinement toward visible light-driven CO₂ reduction in water

Abstract

Photocatalytic reduction of CO2 in water using a single integrated system utilizing sunlight is the ultimate goal for artificial photosynthesis. Here, we report the design and multistep synthesis of Zr-MBA-Ru/Re-MOF...

A Hybrid Assembly with Nickel Poly‐Pyridine Polymer on CdS Quantum Dots for Photo‐Reducing CO2 into Syngas with Controlled H2/CO Ratios

“…With light irradiation, a new IR peak at 1627 cm −1 attributed to COOH* was detected, which is a crucial intermediate for reduction of CO 2 into CO [21] . The prominent peaks at 1924, 1986, and 2098 cm −1 are related to CO* formation [25] . As expected, the emergence of signals related to COOH* and CO* is accompanied by the irradiation, evidencing CO 2 reduction is triggered by light.…”

“…[24] With light irradiation, a new IR peak at 1627 cm À 1 attributed to COOH* was detected, which is a crucial intermediate for reduction of CO 2 into CO. [21] The prominent peaks at 1924, 1986, and 2098 cm À 1 are related to CO* formation. [25] As expected, the emergence of signals related to COOH* and CO* is accompanied by the irradiation, evidencing CO 2 reduction is triggered by light. Additionally, a peak that stands for * OH radical was observed at 1654 cm À 1 , [26] which was further evidenced by electron paramagnetic resonance (EPR) in Figure 3c.…”

Replacing Ru complex with carbon dots over MOF-derived Co3O4/In2O3 catalyst for efficient solar-driven CO2 reduction

“…11 Among these, the addition of photosensitizer, which can boost the charge transfer efficiency and provide more active sties to activate photocatalytic molecules, has, so far, been widely investigated. 12–15 Inspired by molecular catalysis, noble metal complexes ( e.g. , [Ru(bpy) 3 ]Cl 2 and Ir(ppy) 3 ) coupled with stable semiconductor catalysts often possess high CO 2 conversion efficiencies.…”

Postsynthetic Modification of Metal−Organic Frameworks for Photocatalytic Applications

“…Such a strategy not only regulates the light absorption ability, but also introduces active sites into MOFs for photocatalysis. [50][51][52][53] For example, NU-1000 was functionalized with photosensitizer molecules such as boron-dipyrromethene (BODIPY) on the Zr 6 nodes, demonstrating outstanding activity for detoxification of the sulfur mustard stimulant. [51] Similarly, Zr 6 nodes of PCN-222 (PMOF) were decorated with fac-[Re(4,4 0 -bis(dicarboxylic acid)-2,2 0 -bipyridine)(CO) 3 Cl] (ReCA) to give a new PMOF/Re hybrid.…”

“…So far, a variety of MOFs have been used as photocatalysts for CO 2 reduction, as summarized in Table 2. [31,33,36,41,53,69,72,79,100,206] For example, pristine NH 2 -MIL-125-Ti exhibited a CB potential of 0.04 V that was insufficient to drive CO 2 photoreduction. The light-harvesting ability of NH 2 -MIL-125-Ti was improved by the doping of Ni ions on the Ti nodes by PSM and depended on the doped amount of Ni ions (Figure 7).…”