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author:

Wang, Zeming (Wang, Zeming.) [1] | Li, Gao (Li, Gao.) [2] | Hou, Weidong (Hou, Weidong.) [3] | Guo, Huazhang (Guo, Huazhang.) [4] | Wang, Liang (Wang, Liang.) [5] | Wu, Minghong (Wu, Minghong.) [6] (Scholars:吴明红)

Indexed by:

SCIE

Abstract:

Previous theoretical calculations have predicted that the incorporation of tellurium (Te) into carbon materials can significantly enhance their catalytic activity. Nevertheless, the experimental realization of efficient Te-doped carbon materials remains challenging. Here, we employed theoretical calculations to deduce the possible structure of Te-doped carbon materials. Our findings unveil that the formation of Te-O pairs in carbon materials with a relatively low oxygen coordination microenvironment can impart strong electron-donating capabilities, thereby boosting the electrocatalytic activity of oxygen reduction reaction (ORR). To verify our theoretical predictions, we synthesized Te-O pair-doped carbon materials using a tandem hydrothermal dehydration-pyrolysis strategy. This approach enabled efficient infiltration of Te into carbon materials. Our unconventional Te-O pair-doped carbon materials exhibit expanded interlayer distances and graphene-like nanosheet architectures, which provide enlarged active areas. These structural features contribute to the enhanced ORR catalytic performance of the as-prepared carbon catalyst. Our findings provide molecular-level insights into the design of various carbon-based with active sites.

Keyword:

carbon nanosheets charge transfer electron donation oxygen reduction Te-O pairs

Community:

  • [ 1 ] [Wang, Zeming]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 2 ] [Li, Gao]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 3 ] [Hou, Weidong]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 4 ] [Guo, Huazhang]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 5 ] [Wang, Liang]Shanghai Univ, Inst Nanochem & Nanobiol, Sch Environm & Chem Engn, Shanghai 200444, Peoples R China
  • [ 6 ] [Wu, Minghong]Shanghai Univ, Shanghai Inst Appl Radiat, Shanghai 200444, Peoples R China
  • [ 7 ] [Wu, Minghong]Shanghai Univ, Key Lab Organ Cpd Pollut Control Engn MOE, Shanghai 200444, Peoples R China

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Source :

ACS NANO

ISSN: 1936-0851

Year: 2023

Issue: 9

Volume: 17

Page: 8671-8679

1 5 . 8

JCR@2023

1 5 . 8 0 0

JCR@2023

JCR Journal Grade:1

CAS Journal Grade:1

Cited Count:

WoS CC Cited Count: 39

SCOPUS Cited Count: 38

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 1

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