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Carbon nitride nanotubes with in situ grafted hydroxyl groups for highly efficient spontaneous H₂O₂ production

Zhou, Liang and Lei, Juying and Wang, Fuchen and Wang, Lingzhi and Hoffmann, Michael R. and Liu, Yongdi and In, Su-Il and Zhang, Jinlong (2021) Carbon nitride nanotubes with in situ grafted hydroxyl groups for highly efficient spontaneous H₂O₂ production. Applied Catalysis B, 288 . Art. No. 119993. ISSN 0926-3373. https://resolver.caltech.edu/CaltechAUTHORS:20210216-140504851

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Abstract

An active and inexpensive photocatalyst for H₂O₂ production is desirable for industrial applications. However, obtaining high photocatalytic activity from metal-free catalysts without the use of sacrificial electron donors is difficult. Herein, g-C₃N₄ (CN) nanotubes functionalized with surface > OH groups that are grafted in situ were successfully synthesized via a novel alkalinization process. The nanotube structures provide a large surface area and improved mass transfer properties. In situ grafted > OH groups can capture photogenerated holes to promote separation of photogenerated charge, enabling the ready availability of electrons and hydrogen ions for H₂O₂ production. Further, the surface > OH groups help to suppress H₂O₂ self-decomposition. Consequently, a high rate of 240.36 μmol h⁻¹ g⁻¹ of H₂O₂ production can be achieved without sacrificial agents, which is the highest H₂O₂ production in a spontaneous system for metal-free photocatalysts. This work provides a new strategy for an efficient and spontaneous H₂O₂ production method using a metal-free CN photocatalyst.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.apcatb.2021.119993DOIArticle
ORCID:
AuthorORCID
Zhou, Liang0000-0002-9373-5705
Lei, Juying0000-0002-5713-4662
Hoffmann, Michael R.0000-0001-6495-1946
In, Su-Il0000-0001-9063-2041
Zhang, Jinlong0000-0002-1334-6436
Alternate Title:Carbon nitride nanotubes with in situ grafted hydroxyl groups for highly efficient spontaneous H₂O₂ production
Additional Information:© 2021 Elsevier. Received 23 December 2020, Revised 6 February 2021, Accepted 6 February 2021, Available online 14 February 2021. The authors gratefully acknowledge the National Key Research and Development Program (2016YFA0204200), the support of the National Natural Science Foundation of China (22006038, 21777044 and 22076046), the China Postdoctoral Science Foundation (2020M681209), the Science and Technology Commission of Shanghai Municipality (19ZR1472400, 19230711300). This research was also supported by Korean National Research Foundation (2017R1E1A1A01074890). CRediT authorship contribution statement: Liang Zhou: Conceptualization, Investigation, Writing - original draft. Juying Lei: Data curation, Supervision. Fuchen Wang: Resources. Lingzhi Wang: Resources, Methodology. Michael R. Hoffmann: Writing - review & editing. Yongdi Liu: Writing - review & editing, Funding acquisition. Su-Il In: Writing - review & editing. Jinlong Zhang: Project administration. The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
Funders:
Funding AgencyGrant Number
National Key Research and Development Program of China2016YFA0204200
National Natural Science Foundation of China22006038
National Natural Science Foundation of China21777044
National Natural Science Foundation of China22076046
China Postdoctoral Science Foundation2020M681209
Science and Technology Commission of Shanghai Municipality19ZR1472400
Science and Technology Commission of Shanghai Municipality19230711300
National Research Foundation of Korea2017R1E1A1A01074890
Subject Keywords:g-C3N4; Hydroxyl groups; Photocatalysis; Spontaneous; H2O2 production
Record Number:CaltechAUTHORS:20210216-140504851
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20210216-140504851
Official Citation:Liang Zhou, Juying Lei, Fuchen Wang, Lingzhi Wang, Michael R. Hoffmann, Yongdi Liu, Su-Il In, Jinlong Zhang, Carbon nitride nanotubes with in situ grafted hydroxyl groups for highly efficient spontaneous H2O2 production, Applied Catalysis B: Environmental, Volume 288, 2021, 119993, ISSN 0926-3373, https://doi.org/10.1016/j.apcatb.2021.119993.
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:108075
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:16 Feb 2021 23:30
Last Modified:23 Feb 2021 23:58

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