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      Phytate-coordinated nickel foam with enriched NiOOH intermediates for 5-hydroxymethylfurfural electrooxidation

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          Abstract

          Phytate coordination effectively accelerates the surface reconstruction of Ni foam and enriches the total amount of NiOOH active species, thereafter significantly promoting the selective electrooxidation of HMF into FDCA.

          Abstract

          Manipulating the surface reconstruction of Ni-based catalysts to form NiOOH intermediates is crucial for electrooxidation. Herein, we report a phytate coordination-induced enrichment of NiOOH on phytate-coordinated Ni foam, which exhibited high catalytic performance for 5-hydroxymethylfurfural electro-oxidation. The HMF oxidation rate of 0.76 mmol h −1 outperformed the majority of Ni-based catalysts.

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          A metal-free bifunctional electrocatalyst for oxygen reduction and oxygen evolution reactions.

          Jintao Zhang, Zhenghang Zhao, Zhenhai Xia … (2015)
          The oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) are traditionally carried out with noble metals (such as Pt) and metal oxides (such as RuO₂ and MnO₂) as catalysts, respectively. However, these metal-based catalysts often suffer from multiple disadvantages, including high cost, low selectivity, poor stability and detrimental environmental effects. Here, we describe a mesoporous carbon foam co-doped with nitrogen and phosphorus that has a large surface area of ∼1,663 m(2) g(-1) and good electrocatalytic properties for both ORR and OER. This material was fabricated using a scalable, one-step process involving the pyrolysis of a polyaniline aerogel synthesized in the presence of phytic acid. We then tested the suitability of this N,P-doped carbon foam as an air electrode for primary and rechargeable Zn-air batteries. Primary batteries demonstrated an open-circuit potential of 1.48 V, a specific capacity of 735 mAh gZn(-1) (corresponding to an energy density of 835 Wh kgZn(-1)), a peak power density of 55 mW cm(-2), and stable operation for 240 h after mechanical recharging. Two-electrode rechargeable batteries could be cycled stably for 180 cycles at 2 mA cm(-2). We also examine the activity of our carbon foam for both OER and ORR independently, in a three-electrode configuration, and discuss ways in which the Zn-air battery can be further improved. Finally, our density functional theory calculations reveal that the N,P co-doping and graphene edge effects are essential for the bifunctional electrocatalytic activity of our material.
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            Simultaneous H2Generation and Biomass Upgrading in Water by an Efficient Noble-Metal-Free Bifunctional Electrocatalyst

            Yujie Sun, Nan Jiang, Xuan Liu … (2016)
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              Activity Origins and Design Principles of Nickel-Based Catalysts for Nucleophile Electrooxidation

              Wei Chen, Chao Xie, Yanyong Wang … (2020)
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                Author and article information

                Contributors
                Journal
                Journal ID (publisher-id): CHCOFS
                Title: Chemical Communications
                Abbreviated Title: Chem. Commun.
                Publisher: Royal Society of Chemistry (RSC)
                ISSN (Print): 1359-7345
                ISSN (Electronic): 1364-548X
                Publication date Created: July 07 2022
                Publication date (Electronic): 2022
                Volume: 58
                Issue: 55
                Pages: 7626-7629
                Affiliations
                [1 ]Key Laboratory of Special Functional and Smart Polymer Materials of Ministry of Industry and Information Technology, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi’an, 710072, P. R. China
                [2 ]Institute for Frontier Materials, Deakin University, Geelong, 3216, Australia
                [3 ]School of Chemical Engineering and Technology, Xi’an Jiaotong University, Xi’an, 710049, P. R. China
                Article
                DOI: 10.1039/D2CC02182J
                SO-VID: 51540cc6-a5c1-4b29-911a-eec472c36cc7
                Copyright © © 2022
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                http://rsc.li/journals-terms-of-use

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