Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres

Summary: Electrocatalytic generation of H2O2 via the 2-electron pathway of oxygen reduction reaction (2e-ORR) is an attractive technology compared to the anthraquinone process due to convenience and environmental friendliness. However, catalysts with excellent selectivity and high activity for 2e-OR...

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Main Authors: Zhaohui Wang, Zehan Sun, Kun Li, Keyi Fan, Tian Tian, Haomin Jiang, Honglei Jin, Ang Li, Yang Tang, Yanzhi Sun, Pingyu Wan, Yongmei Chen
Format: Article
Language:English
Published: Elsevier 2024-04-01
Series:iScience
Subjects:
Online Access:http://www.sciencedirect.com/science/article/pii/S2589004224007752
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author Zhaohui Wang
Zehan Sun
Kun Li
Keyi Fan
Tian Tian
Haomin Jiang
Honglei Jin
Ang Li
Yang Tang
Yanzhi Sun
Pingyu Wan
Yongmei Chen
author_facet Zhaohui Wang
Zehan Sun
Kun Li
Keyi Fan
Tian Tian
Haomin Jiang
Honglei Jin
Ang Li
Yang Tang
Yanzhi Sun
Pingyu Wan
Yongmei Chen
author_sort Zhaohui Wang
collection DOAJ
description Summary: Electrocatalytic generation of H2O2 via the 2-electron pathway of oxygen reduction reaction (2e-ORR) is an attractive technology compared to the anthraquinone process due to convenience and environmental friendliness. However, catalysts with excellent selectivity and high activity for 2e-ORR are necessary for practical applications. Reported here is a catalyst comprising boron-doped porous carbon hollow spheres (B-PCHSs) prepared using the hard template method coupled with borate transesterification. In an alkali electrolyte, the selectivity of B-PCHS for 2e-ORR above 90% in range of 0.4–0.7 VRHE and an onset potential of 0.833 V was obtained. Meanwhile, the generation rate of H2O2 reached 902.48 mmol h−1 gcat−1 at 0.4 VRHE under 59.13 mA cm−2 in batch electrolysis. The excellent catalytic selectivity of B-PCHS for 2e-ORR originates from the boron element, and the catalytic activity of B-PCHS for H2O2 generation is contributed to the morphology of porous hollow spheres, which facilitates mass transfer processes.
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spelling doaj.art-c8e5cbe809134d23b91522183e84f1c72024-04-10T04:29:21ZengElsevieriScience2589-00422024-04-01274109553Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheresZhaohui Wang0Zehan Sun1Kun Li2Keyi Fan3Tian Tian4Haomin Jiang5Honglei Jin6Ang Li7Yang Tang8Yanzhi Sun9Pingyu Wan10Yongmei Chen11Institute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China; State Key Laboratory of Fine Chemicals, School of Chemistry, Dalian University of Technology, Dalian 116024, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaCenter for Advanced Materials Research, College of Chemistry, Beijing Normal University, Zhuhai 519087, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. ChinaInstitute of Applied Electrochemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P.R. China; Corresponding authorSummary: Electrocatalytic generation of H2O2 via the 2-electron pathway of oxygen reduction reaction (2e-ORR) is an attractive technology compared to the anthraquinone process due to convenience and environmental friendliness. However, catalysts with excellent selectivity and high activity for 2e-ORR are necessary for practical applications. Reported here is a catalyst comprising boron-doped porous carbon hollow spheres (B-PCHSs) prepared using the hard template method coupled with borate transesterification. In an alkali electrolyte, the selectivity of B-PCHS for 2e-ORR above 90% in range of 0.4–0.7 VRHE and an onset potential of 0.833 V was obtained. Meanwhile, the generation rate of H2O2 reached 902.48 mmol h−1 gcat−1 at 0.4 VRHE under 59.13 mA cm−2 in batch electrolysis. The excellent catalytic selectivity of B-PCHS for 2e-ORR originates from the boron element, and the catalytic activity of B-PCHS for H2O2 generation is contributed to the morphology of porous hollow spheres, which facilitates mass transfer processes.http://www.sciencedirect.com/science/article/pii/S2589004224007752ChemistryElectrochemistry
spellingShingle Zhaohui Wang
Zehan Sun
Kun Li
Keyi Fan
Tian Tian
Haomin Jiang
Honglei Jin
Ang Li
Yang Tang
Yanzhi Sun
Pingyu Wan
Yongmei Chen
Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
iScience
Chemistry
Electrochemistry
title Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
title_full Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
title_fullStr Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
title_full_unstemmed Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
title_short Enhanced electrocatalytic performance for H2O2 generation by boron-doped porous carbon hollow spheres
title_sort enhanced electrocatalytic performance for h2o2 generation by boron doped porous carbon hollow spheres
topic Chemistry
Electrochemistry
url http://www.sciencedirect.com/science/article/pii/S2589004224007752
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