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Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
Bi-transition metal carbides (BTMCs) are promising in catalytic fields, but the synthesis of small-sized BTMCs remains a challenge. Here, Mo(x)Co(x)C (mainly below 20 nm in size) confined in uniform carbon polyhedrons (Mo(x)Co(x)C@C) was synthesized based on trapping [PMo(12)O(40)](3–) (PMo(12)) clu...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5975546/ https://www.ncbi.nlm.nih.gov/pubmed/29910925 http://dx.doi.org/10.1039/c8sc01454j |
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author | Chen, Congfang Wu, Aiping Yan, Haijing Xiao, Yinglu Tian, Chungui Fu, Honggang |
author_facet | Chen, Congfang Wu, Aiping Yan, Haijing Xiao, Yinglu Tian, Chungui Fu, Honggang |
author_sort | Chen, Congfang |
collection | PubMed |
description | Bi-transition metal carbides (BTMCs) are promising in catalytic fields, but the synthesis of small-sized BTMCs remains a challenge. Here, Mo(x)Co(x)C (mainly below 20 nm in size) confined in uniform carbon polyhedrons (Mo(x)Co(x)C@C) was synthesized based on trapping [PMo(12)O(40)](3–) (PMo(12)) clusters into pre-synthesized, uniform ZIF-67 (PMo/ZIF-67). The opening of the windows (0.34 nm) of ZIF-67 cages through heating is essential to allow the trapping of PMo(12) into the cages. This trapping route provides a new method to successfully combine POMs and MOFs that can not be effectively combined via traditional POMOF-based (simultaneous assembly) routes. It also has advantages in controlling the uniformity and components of the materials. The size matching of PMo(12) (1 nm) and the cages (1.16 nm) of ZIF-67 enables effective contact of the Co and Mo sources, thus giving small-sized Mo(x)Co(x)C protected by carbon via calcination. The optimized catalysts showed good performance for water splitting with a low η10 of 83 mV (295 mV) for the hydrogen (oxygen) evolution reaction, which is superior to those derived from ZIF-67 and precursors from POMOF-based routes. Our results also indicated that the HER activity is determined by the kind of BTMC, and the activity for the OER is relative to the oxygen-containing species formed during the initial OER test. |
format | Online Article Text |
id | pubmed-5975546 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-59755462018-06-15 Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting Chen, Congfang Wu, Aiping Yan, Haijing Xiao, Yinglu Tian, Chungui Fu, Honggang Chem Sci Chemistry Bi-transition metal carbides (BTMCs) are promising in catalytic fields, but the synthesis of small-sized BTMCs remains a challenge. Here, Mo(x)Co(x)C (mainly below 20 nm in size) confined in uniform carbon polyhedrons (Mo(x)Co(x)C@C) was synthesized based on trapping [PMo(12)O(40)](3–) (PMo(12)) clusters into pre-synthesized, uniform ZIF-67 (PMo/ZIF-67). The opening of the windows (0.34 nm) of ZIF-67 cages through heating is essential to allow the trapping of PMo(12) into the cages. This trapping route provides a new method to successfully combine POMs and MOFs that can not be effectively combined via traditional POMOF-based (simultaneous assembly) routes. It also has advantages in controlling the uniformity and components of the materials. The size matching of PMo(12) (1 nm) and the cages (1.16 nm) of ZIF-67 enables effective contact of the Co and Mo sources, thus giving small-sized Mo(x)Co(x)C protected by carbon via calcination. The optimized catalysts showed good performance for water splitting with a low η10 of 83 mV (295 mV) for the hydrogen (oxygen) evolution reaction, which is superior to those derived from ZIF-67 and precursors from POMOF-based routes. Our results also indicated that the HER activity is determined by the kind of BTMC, and the activity for the OER is relative to the oxygen-containing species formed during the initial OER test. Royal Society of Chemistry 2018-04-23 /pmc/articles/PMC5975546/ /pubmed/29910925 http://dx.doi.org/10.1039/c8sc01454j Text en This journal is © The Royal Society of Chemistry 2018 https://creativecommons.org/licenses/by-nc/3.0/This article is freely available. This article is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported Licence (CC BY-NC 3.0) |
spellingShingle | Chemistry Chen, Congfang Wu, Aiping Yan, Haijing Xiao, Yinglu Tian, Chungui Fu, Honggang Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting |
title | Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
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title_full | Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
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title_fullStr | Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
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title_full_unstemmed | Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
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title_short | Trapping [PMo(12)O(40)](3–) clusters into pre-synthesized ZIF-67 toward Mo(x)Co(x)C particles confined in uniform carbon polyhedrons for efficient overall water splitting
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title_sort | trapping [pmo(12)o(40)](3–) clusters into pre-synthesized zif-67 toward mo(x)co(x)c particles confined in uniform carbon polyhedrons for efficient overall water splitting |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5975546/ https://www.ncbi.nlm.nih.gov/pubmed/29910925 http://dx.doi.org/10.1039/c8sc01454j |
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