Selective CO<sub>2</sub> Reduction Catalyzed by Single Cobalt Sites on Carbon Nitride under Visible-Light Irradiation

Huang, Peipei; Huang, Jiahao; Pantovich, Sebastian A.; Carl, Alexander D.; Fenton, Thomas; Caputo, Christine A.; Grimm, Ronald L.; Frenkel, Anatoly I.; Li, Gonghu

doi:10.1021/jacs.8b10380

Cited by 308 publications

(257 citation statements)

References 63 publications

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“…It will decompose during photocatalysis. Huang et al dispersed single Co sites on the surface of g‐C 3 N 4 . According to Co K‐edge EXAFS, the Co coordination environment is similar to that for Co‐cyclam without CoOCo.…”

Section: Surface Modificationmentioning

confidence: 99%

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

313

251

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Photocatalytic CO2 reduction is an effective means to generate renewable energy. It involves redox reactions, reduction of CO2 and oxidation of water, that leads to the production of solar fuel. Significant research effort has therefore been made to develop inexpensive and practically sustainable semiconductor‐based photocatalysts. The exploration of atomic‐level active sites on the surface of semiconductors can result in an improved understanding of the mechanism of CO2 photoreduction. This can be applied to the design and synthesis of efficient photocatalysts. In this review, atomic‐level reactive sites are classified into four types: vacancies, single atoms, surface functional groups, and frustrated Lewis pairs (FLPs). These different photocatalytic reactive sites are shown to have varied affinity to reactants, intermediates, and products. This changes pathways for CO2 reduction and significantly impacts catalytic activity and selectivity. The design of a photocatalyst from an atomic‐level perspective can therefore be used to maximize atomic utilization efficiency and lead to a high selectivity. The prospects for fabrication of effective photocatalysts based on an in‐depth understanding are highlighted.

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Section: Surface Modificationmentioning

confidence: 99%

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Zhang

Xia

Ran

et al. 2020

Advanced Energy Materials

313

251

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“…would determine the CRR performance besides the electronic structures of active sites. Furthermore, single cobalt active sites could be anchored on the C 3 N 4 nanosheets (Co 2+ @C 3 N 4 ) through Co–N coordination, which are synthesized via mixing CoCl 2 and C 3 N 4 in acetonitrile solution and subsequently heating treatment in triethylamine solution via a conventional microwave approach. When the higher concentration of CoCl 2 precursor was used, the higher density Co–N 4 active sites was achieved, and the highest loading amount of 0.016 µmol mg −1 for Co atoms can be obtained.…”

Section: Carbon‐rich Npmsacs For Crr and Hermentioning

confidence: 99%

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution

et al. 2019

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Single atom catalysts (SACs) are considered as the emerging catalysts for boosting electricity‐driven CO2 reduction reaction (CRR) and hydrogen evolution reaction (HER). To replace the rare and expensive noble metal electrocatalysts, developing nonprecious metal SACs (NPMSACs) with superior electrocatalytic activity and stability is of paramount importance for achieving high efficiency in CRR and HER. Herein, a brief overview of recent achievements in the carbon‐rich NPMSACs for both CRR and HER is provided. The synthesis strategies and corresponding electrocatalytic performances of various carbon‐rich NPMSACs are discussed in the order of various metals (Ni, Co, Fe, Zn, and Sn for CRR, as well as Ni, Co, Fe, Mo, and W for HER), with a special attention paid to understand the structure–activity relationships. Finally, the remaining challenges and future perspectives for enhancing CRR and HER performance of NPMSACs are outlined.

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“…CO 2 photoreduction driven by sunlight not only provides an alternate approach for the generation of useful chemicals (e.g., syngas) in an environmentally friendly, sustainable, and low‐cost way but also alleviates the environmental burden caused by excessive CO 2 emissions. Numerous photocatalysts with high activity have been developed for CO 2 reduction to syngas, but they usually use pure CO 2 , which needs to be extracted from the atmosphere first . The high cost and energy consumption of the technology used in CO 2 condensation (e.g., selective adsorption and desorption by porous materials) makes the utilization of high pressure (or pure/high concentration) CO 2 unfavorable .…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

You

Lang

et al. 2020

Chemistry A European J

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At present, the fixation of CO2 always requires it to be extracted from the atmosphere first, which leads to more energy consumption. Thus, direct photoreduction of low‐concentration CO2 to useful chemicals (e.g., syngas) under sunlight is significant from an energy‐saving and environmentally friendly perspective. Here, the design and fabrication of a [Ru(bpy)3]/[Co20Mo16P24] composite is demonstrated for visible‐light‐driven syngas production from diluted CO2 (3–20 %) gas with a high yield of approximately 1000 TONs (turnover number of syngas). This activity is an order of magnitude higher than the reported system with [Ru(bpy)3]2+ participation. With evidence from ultrafast transient absorption, GC‐MS, 1H NMR spectroscopy and in situ transient photovoltage tests, a clear and fundamental understanding of the highly efficient photoreduction of CO2 by the [Ru(bpy)3]/[Co20Mo16P24] composite is achieved. Making use of the structure and property designable polyoxometalates towards the photo‐fixation of CO2 is a conceptually distinct and commercially interesting strategy for making useful chemicals and environmental protection.

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Selective CO₂ Reduction Catalyzed by Single Cobalt Sites on Carbon Nitride under Visible-Light Irradiation

Cited by 308 publications

References 63 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite

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Selective CO2 Reduction Catalyzed by Single Cobalt Sites on Carbon Nitride under Visible-Light Irradiation

Cited by 308 publications

References 63 publications

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO2 Reduction

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO2 Reduction and Hydrogen Evolution

Highly Efficient Photoreduction of Low‐Concentration CO2to Syngas by Using a Polyoxometalates/RuIIComposite

Contact Info

Product

Resources

About

Selective CO₂ Reduction Catalyzed by Single Cobalt Sites on Carbon Nitride under Visible-Light Irradiation

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Atomic‐Level Reactive Sites for Semiconductor‐Based Photocatalytic CO₂ Reduction

Carbon‐Rich Nonprecious Metal Single Atom Electrocatalysts for CO₂ Reduction and Hydrogen Evolution

Highly Efficient Photoreduction of Low‐Concentration CO₂to Syngas by Using a Polyoxometalates/Ru^IIComposite