Nano‐Ni‐Induced Electronic Modulation of MoS2 Nanosheets Enables Energy‐Saving H2 Production and Sulfide Degradation

Fan Liu; Xinghong Cai; Yang Tang; Wenqian Liu; Qianwei Chen; Peixin Dong; Maowen Xu; Yangyang Tan; Shujuan Bao

doi:10.1002/eem2.12644

journal article Open Access Jul 04, 2023

Nano‐Ni‐Induced Electronic Modulation of MoS2 Nanosheets Enables Energy‐Saving H2 Production and Sulfide Degradation

Fan Liu

Xinghong Cai Yang Tang

Wenqian Liu Qianwei Chen Peixin Dong Maowen Xu

Yangyang Tan Shujuan Bao

ENERGY & ENVIRONMENTAL MATERIALS Vol. 7 No. 3 · Wiley

View at Publisher Save 10.1002/eem2.12644

Abstract

Electrocatalytic hydrogen evolution and sulfion (S2−) recycling are promising strategies for boosting H2 production and removing environmental pollutants. Here, a nano‐Ni‐functionalized molybdenum disulfide (MoS2) nanosheet was assembled on steel mesh (Ni‐MoS2/SM) for use in sulfide oxidation reaction‐assisted, energy‐saving H2 production. Experimental and theoretical calculation results revealed that anchoring nano‐Ni on high‐surface‐area slack MoS2 nanosheets not only optimized catalyst adsorption of polysulfides but also played an important role in promoting hydrogen evolution reaction kinetics by absorbing OHad, thereby greatly enhancing the catalytic performance toward sulfide oxidation reaction and hydrogen evolution reaction. Meanwhile, the Ni/MoS2‐based hydrogen evolution reaction + sulfide oxidation reaction system achieved nearly 100% hydrogen production efficiency and only consumed 61% less power per kWh than the oxygen evolution reaction + hydrogen evolution reaction system, which suggested our proposed Ni‐MoS2 and novel hydrogen production system are promising for sustainable energy production.

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Details

Published: Jul 04, 2023
Vol/Issue: 7(3)
License: View

Authors

F

Fan Liu