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Effects of p‐ and n‐type Doping in Inorganic Fullerene MoS 2 on the Hydrogen Evolution Reaction
Author(s) -
Chhetri Manjeet,
Gupta Uttam,
Yadgarov Lena,
Rosentsveig Rita,
Tenne Reshef,
Rao C. N. R.
Publication year - 2016
Publication title -
chemelectrochem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.182
H-Index - 59
ISSN - 2196-0216
DOI - 10.1002/celc.201600291
Subject(s) - doping , electrolyte , catalysis , dopant , hydrogen , inorganic chemistry , water splitting , fullerene , materials science , chemistry , chemical engineering , electrode , organic chemistry , optoelectronics , photocatalysis , engineering
In this report, a systematic study of the effects of p‐ and n‐type doping of the inorganic fullerene (IF) MoS 2 on the efficiency of the hydrogen evolution reaction (HER) is described. Active edge site enriched IF‐MoS 2 , promoted by strategically introducing Nb (p‐type) and Re (n‐type) dopants (below 500 ppm), enables facile HER over a range of pH values. Experimental results suggest that although Nb‐doping on IF‐MoS 2 leads to better electrocatalytic HER activity in an alkaline medium with an onset potential difference of 80 mV, Re‐doping gives excellent activity in an acidic medium. The present work presents a systematic study of HER activity by finely tuning the activity in different electrolyte media with varied pH values through deliberate doping of the parent catalyst with p‐ and n‐ type materials. The doped IF‐MoS 2 catalysts exhibit excellent catalytic activity even with sea water as an electrolyte.