An efficient visible-light photocatalyst for CO2 reduction fabricated by cobalt porphyrin and graphitic carbon nitride via covalent bonding

Tian, Shufang; Chen, Sudi; Ren, Xitong; Hu, Yanwei; Hu, Haiyan; Sun, Jiajie; Bai, Feng

doi:10.1007/s12274-020-2908-4

Cited by 59 publications

(37 citation statements)

References 58 publications

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“…Rare previous examples of cobalt complexes linked to carbon nitride have led to reactivity toward CO production with modest turnover number (TON). 18,25,51,52 In this work, we achieved the covalent coupling of GA with an efficient Co-based molecular catalyst, namely cobalt quaterpyridine (Coqpy), 53,54 and we studied the photochemical performance of the resulting hybrid system for the reduction of CO 2 under simulated solar light illumination. It led to selectivity control for the CO 2 reduction reaction (CO2RR) and remarkable stability over time.…”

Section: ■ Introductionmentioning

confidence: 99%

Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control

Blanco

Calvillo

et al. 2021

J. Am. Chem. Soc.

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In the quest for designing efficient and stable photocatalytic materials for CO2 reduction, hybridizing a selective noble-metal-free molecular catalyst and carbon-based light-absorbing materials has recently emerged as a fruitful approach. In this work, we report about Co quaterpyridine complexes covalently linked to graphene surfaces functionalized by carboxylic acid groups. The nanostructured materials were characterized by X-ray photoemission spectroscopy, X-ray absorption spectroscopy, IR and Raman spectroscopies, high-resolution transmission electron microscopy and proved to be highly active in the visible-light-driven CO2 catalytic conversion in acetonitrile solutions. Exceptional stabilities (over 200 h of irradiation) were obtained without compromising the selective conversion of CO2 to products (>97%). Most importantly, complete selectivity control could be obtained upon adjusting the experimental conditions: production of CO as the only product was achieved when using a weak acid (phenol or trifluoroethanol) as a co-substrate, while formate was exclusively obtained in solutions of mixed acetonitrile and triethanolamine.

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Section: ■ Introductionmentioning

confidence: 99%

Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control

Blanco

Calvillo

et al. 2021

J. Am. Chem. Soc.

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“…Compared with the CrmTPP solution, the BVNS/CrmTPP/Pt nanocomposites display obviously enhanced and broadened Q-band absorptions, which become more noticeable along with the increase of CrmTPP loading content. It suggests that there is strong interaction between CrmTPP and BVNS, which will be a benefit to the electron transfer between the BVNS and the excited CrmTPP molecules [18,22,41]. The energy band structure of the ultrathin BVNS are further investigated using the Tauc plots and UPS.…”

Section: Discussion On the Photocatalytic Mechanismmentioning

confidence: 99%

Z-scheme photocatalyst based on porphyrin derivative decorated few-layer BiVO4 nanosheets for efficient visible-light-driven overall water splitting

Wang

Guo

et al. 2020

Nano Res.

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It is highly desirable to simulate natural photosynthesis by using sunlight to drive the overall water splitting without using external bias and sacrificial agent. Herein, few-layer monoclinic BiVO 4 nanosheets (BVNS) with a thickness of ~4.3 nm, exposed (010) facets and abundant oxygen vacancies are fabricated using graphene oxide dots as templating reagent. After decorating with asymmetric chromium porphyrin derivative bearing one benzoic acid and three phenyls as meso-position substituents (chromium-5-(4-carboxyphenyl)-10,15,20-triphenylporphrin, CrmTPP) and PtO x cocatalyst, the obtained two-dimensional (2D) hybrid nanocomposite (BVNS/CrmTPP/Pt) with an optimal component ratio delivers a robust overall water splitting performance with a relatively high apparent quantum yield (8.67%) at 400 nm monochromatic light. The ultrathin structure and widely distributed oxygen vacancies on the exposed (010) facets of BVNS not only endow strong and intimate contact with the decorated CrmTPP molecules to promote a two-step excitation Z-scheme charge transfer mechanism for preserving the high redox ability of the photogenerated charge carriers, but also alleviate their recombination, and thus causing the robust overall water splitting performance of the 2D hybrid nanocomposites. The present results provide a novel strategy to construct highly efficient artificial photosynthetic system for overall water splitting.

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“…Cobalt nitrides have proved beneficial for CO 2 RR because they offer more surface base sites of adsorption of CO 2 and the generation of more active sites [ 140 , 141 , 142 , 143 , 144 , 145 , 146 ]. Peng et al reported the highly efficient CO 2 RR cobalt nitride catalysts (700-Co 5.47 N/C) in an aqueous electrolyte.…”

Section: Cobalt Catalysts For Co 2 Reductionmentioning

confidence: 99%

Electrochemical Reduction of CO2: A Review of Cobalt Based Catalysts for Carbon Dioxide Conversion to Fuels

et al. 2021

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Electrochemical CO2 reduction reaction (CO2RR) provides a promising approach to curbing harmful emissions contributing to global warming. However, several challenges hinder the commercialization of this technology, including high overpotentials, electrode instability, and low Faradic efficiencies of desirable products. Several materials have been developed to overcome these challenges. This mini-review discusses the recent performance of various cobalt (Co) electrocatalysts, including Co-single atom, Co-multi metals, Co-complexes, Co-based metal–organic frameworks (MOFs), Co-based covalent organic frameworks (COFs), Co-nitrides, and Co-oxides. These materials are reviewed with respect to their stability of facilitating CO2 conversion to valuable products, and a summary of the current literature is highlighted, along with future perspectives for the development of efficient CO2RR.

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An efficient visible-light photocatalyst for CO2 reduction fabricated by cobalt porphyrin and graphitic carbon nitride via covalent bonding

Cited by 59 publications

References 58 publications

Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control

Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control

Z-scheme photocatalyst based on porphyrin derivative decorated few-layer BiVO4 nanosheets for efficient visible-light-driven overall water splitting

Electrochemical Reduction of CO2: A Review of Cobalt Based Catalysts for Carbon Dioxide Conversion to Fuels

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An efficient visible-light photocatalyst for CO2 reduction fabricated by cobalt porphyrin and graphitic carbon nitride via covalent bonding

Cited by 59 publications

References 58 publications

Hybridization of Molecular and Graphene Materials for CO2 Photocatalytic Reduction with Selectivity Control

Hybridization of Molecular and Graphene Materials for CO2 Photocatalytic Reduction with Selectivity Control

Z-scheme photocatalyst based on porphyrin derivative decorated few-layer BiVO4 nanosheets for efficient visible-light-driven overall water splitting

Electrochemical Reduction of CO2: A Review of Cobalt Based Catalysts for Carbon Dioxide Conversion to Fuels

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Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control

Hybridization of Molecular and Graphene Materials for CO₂ Photocatalytic Reduction with Selectivity Control