Amorphous Nickel Oxides Supported on Carbon Nanosheets as High-Performance Catalysts for Electrochemical Synthesis of Hydrogen Peroxide

dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorWu, Zekunen_US
dc.contributor.authorWang, Tianzuoen_US
dc.contributor.authorZou, Ji Junen_US
dc.contributor.authorLi, Yongdanen_US
dc.contributor.authorZhang, Cuijuanen_US
dc.contributor.departmentDepartment of Chemical and Metallurgical Engineeringen
dc.contributor.groupauthorIndustrial chemistryen
dc.contributor.organizationTianjin Universityen_US
dc.date.accessioned2023-01-18T09:28:01Z
dc.date.available2023-01-18T09:28:01Z
dc.date.embargoinfo:eu-repo/date/embargoEnd/2023-05-04en_US
dc.date.issued2022-05-20en_US
dc.descriptionPublisher Copyright: © 2022 American Chemical Society.
dc.description.abstractThe development of high-performance yet cost-effective catalysts for electrochemical synthesis of H2O2 is a great challenge. Here, the amorphous nickel oxide NiOx supported on carbon nanosheets was prepared by the photochemical metal organic deposition method. The evolution of the crystalline structure, microstructure, and 2-electron oxygen reduction reaction (2e-ORR) activity in 0.1 M KOH was systematically investigated. The results reveal that the amorphous NiOx is highly efficient and selective toward 2e-ORR with an onset potential of 0.76 V versus reversible hydrogen electrode (RHE), 91% selectivity, and an electron transfer number of ∼2.2 over a wide potential range of 0.15-0.60 V versus RHE, which is outstanding among the metal oxide-based catalysts for 2e-ORR. Such a performance is closely associated with the mesoporous structure of the carbon nanosheets. Furthermore, the appropriate bonding strength of Ni-OH derived from the amorphous nature is crucial for the high selectivity. The theoretical calculation reveals that the *OOH intermediate prefers to adsorb on the amorphous NiOx-C by the end-on mode, facilitating the 2e-ORR process. The present amorphous NiOx loaded on carbon nanosheets can be promising electrocatalysts for synthesizing H2O2 after the stability issues are well addressed.en
dc.description.versionPeer revieweden
dc.format.extent10
dc.format.extent5911-5920
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationWu, Z, Wang, T, Zou, J J, Li, Y & Zhang, C 2022, ' Amorphous Nickel Oxides Supported on Carbon Nanosheets as High-Performance Catalysts for Electrochemical Synthesis of Hydrogen Peroxide ', ACS Catalysis, vol. 12, no. 10, pp. 5911-5920 . https://doi.org/10.1021/acscatal.2c01829en
dc.identifier.doi10.1021/acscatal.2c01829en_US
dc.identifier.issn2155-5435
dc.identifier.otherPURE UUID: ce317e03-ff52-430d-bc36-56453d0422feen_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/ce317e03-ff52-430d-bc36-56453d0422feen_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85130031219&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/97410428/CHEM_Wu_et_al_Amorphous_Nickel_Oxides_2022_ACS_Catalysis.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/118965
dc.identifier.urnURN:NBN:fi:aalto-202301181321
dc.language.isoenen
dc.publisherAMERICAN CHEMICAL SOCIETY
dc.relation.ispartofseriesACS Catalysisen
dc.relation.ispartofseriesVolume 12, issue 10en
dc.rightsopenAccessen
dc.subject.keywordamorphousen_US
dc.subject.keywordelectrocatalysisen_US
dc.subject.keywordhydrogen peroxideen_US
dc.subject.keywordmesoporous carbonen_US
dc.subject.keywordnickel oxideen_US
dc.subject.keywordoxygen reduction reactionen_US
dc.titleAmorphous Nickel Oxides Supported on Carbon Nanosheets as High-Performance Catalysts for Electrochemical Synthesis of Hydrogen Peroxideen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
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