Methanol production from CO2 with the hybrid system of biocatalyst and organo-photocatalyst

Amao, Yutaka; Kataoka, Ryota

doi:10.1016/j.cattod.2017.12.029

Cited by 26 publications

(13 citation statements)

References 33 publications

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“…The schematic illustrations of these systems together with the operational principles are also shown in Figure . Biophotosynthetic CO 2 conversion mimics natural photosynthesis and therefore usually involves redox enzyme molecules as photocatalysts or artificial microbes for photosynthesis. − The photothermal CO 2 conversion approach uses high-temperature solar reactors, typically concentrated solar radiation, to split CO 2 , potentially offering high product formation rate. − Microbial PEC CO 2 conversion combines the advantages of semiconductor nanodevices and the high-selectivity biocatalysts, directly converting CO 2 into fuels or chemicals. − Among the above-mentioned pathways, PS, PC, PEC, and PV+EC approaches are more commonly studied, because they are mostly carried out under relatively mild conditions, such as low temperature and ambient pressure. These strategies will be discussed in detail later; here, only a brief overview is provided. Our approach was to compare precedent results, based on metrics which can be employed as overarching benchmarks through the various solar-driven CO 2 conversion technologies.…”

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confidence: 99%

Recent Advances in Solar-Driven Carbon Dioxide Conversion: Expectations versus Reality

2020

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Solar-driven carbon dioxide (CO 2 ) conversion to fuels and high-value chemicals can contribute to the better utilization of renewable energy sources. Photosynthetic (PS), photocatalytic (PC), photoelectrochemical (PEC), and photovoltaic plus electrochemical (PV+EC) approaches are intensively studied strategies. We aimed to compare the performance of these approaches using unified metrics and to highlight representative studies with outstanding performance in a given aspect. Most importantly, a statistical analysis was carried out to compare the differences in activity, selectivity, and durability of the various approaches, and the underlying causes are discussed in detail. Several interesting trends were found: (i) Only the minority of the studies present comprehensive metrics. (ii) The CO 2 reduction products and their relative amount vary across the different approaches. (iii) Only the PV+EC approach is likely to lead to industrial technologies in the midterm future. Last, a brief perspective on new directions is given to stimulate discussion and future research activity.

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confidence: 99%

Recent Advances in Solar-Driven Carbon Dioxide Conversion: Expectations versus Reality

2020

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“…2. A PBS utilizes the light-capturing performance of semiconductors to obtain photogenerated electron-hole pairs that decompose water into hydrogen and oxygen and then convert CO2 into value-added chemicals via the metabolic pathway in organisms to obtain organic acids and methane [44][45][46][47]. It can also be considered as a MES reactor that is powered by solar energy, or a modified MES electrode that directly captures light energy, thus effectively functioning as an artificial photosynthesis device that exhibits a higher solar energy efficiency than natural photosynthesis [48].…”

Section: Photosynthetic Biohybrid Systems (Pbss)mentioning

confidence: 99%

Artificial bioconversion of carbon dioxide

Zhao

Feng

Chen

et al. 2019

Chinese Journal of Catalysis

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“…The increasing demand for inexpensive, efficient, and environmentally safe chemical processes has stimulated the development of novel catalysts. Diverse materials employed as catalysts include metal oxides, metal complexes, and organic and inorganic polymers, as well as biocatalysts and photocatalysts. − Because of the metastability of free clusters, such reactions are usually catalyzed by clusters on inert supports or by ligated clusters. − The ligand protects the cluster core, whereas the surface reduces mobility and inhibits coalescence. Within the list of the notable chemical reactions where metal clusters are frequently used as a catalyst, the C–C cross-coupling reaction deserves a noteworthy mention. − Here, two organic fragments are combined together using a suitable catalyst. , One of the most important catalysts for such reactions is palladium clusters/nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Developing Efficient Suzuki Cross-Coupling Catalysts by Doping Palladium Clusters with Silver

Sengupta

Bista

2021

ACS Catal.

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It is shown that doping of a Pd cluster by Ag atoms can provide an efficient catalyst for the Suzuki–Miyaura cross-coupling reactions. We demonstrate this intriguing possibility by considering a model reaction involving bromobenzene and phenylboronic acid as reagents where the reaction involves oxidation, transmetallation, and reduction steps. We have examined the reaction barriers of all three steps for a conventional ligated Pd catalyst, a nearly icosahedral Pd13 cluster, and a monosilver-doped Pd12Ag cluster using gradient-corrected density functional theory. It is observed that the reaction carried out on the Pd sites adjacent to an Ag atom in a Pd12Ag cluster shows substantially lower barriers for the oxidation and reduction steps compared to the conventional ligated Pd catalyst and the pure Pd13 cluster. A detailed analysis indicates that the Ag site donates charge to the neighboring Pd site. While such a donation may have been expected to reduce the barrier for the oxidative step, the lowering of the barrier for the reduction step indicates that the respective sites not only act as a donor but can also serve as an acceptor for the reduction step. Furthermore, because of the differential donor–acceptor characteristic of the Ag and Pd atoms, it is observed that the barrier heights of the redox steps are primarily dependent on the chosen active site. The calculated results show that by altering the atom (Ag or Pd) at the active site of the reaction, the activation energies of the redox steps can either be reduced or increased. This shows that the active sites of a bimetallic cluster-like Pd12Ag can be utilized to control the barrier heights of suitable chemical reactions. The relative trend of the barrier heights for both clusters is also observed to be predictable by the conceptual density functional theory. Previous studies in our group have indicated that the reaction barriers for Pd n clusters can be lowered by supporting them on reduced graphene. We, therefore, propose that silver-doped Pd n clusters may provide an even better catalyst.

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Methanol production from CO2 with the hybrid system of biocatalyst and organo-photocatalyst

Cited by 26 publications

References 33 publications

Recent Advances in Solar-Driven Carbon Dioxide Conversion: Expectations versus Reality

Recent Advances in Solar-Driven Carbon Dioxide Conversion: Expectations versus Reality

Artificial bioconversion of carbon dioxide

Developing Efficient Suzuki Cross-Coupling Catalysts by Doping Palladium Clusters with Silver

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