Tailoring MoS2 for Small-Molecule Electroreduction: The Role of Metal Doping and Heterostructures

Kumari, Ankita; Ninawe, Pranay; Velázquez, Jesús M.

doi:10.1021/acsnanoscienceau.5c00134

Tailoring MoS₂ for Small-Molecule Electroreduction: The Role of Metal Doping and Heterostructures

Journal Article · Tue Oct 28 00:00:00 EDT 2025 · ACS Nanoscience Au

DOI:https://doi.org/10.1021/acsnanoscienceau.5c00134· OSTI ID:3009134

Kumari, Ankita ^[1]; ^[1]; Velázquez, Jesús M. ^[1]

Univ. of California, Davis, CA (United States)

The electrification of chemical transformations central to sustainable fuel production and waste valorization, such as overall water splitting (OWS), hydrogen evolution reaction (HER), and electrochemical reduction of CO₂ (CO₂R), presents a powerful opportunity to advance carbon-neutral energy technologies. Transition metal dichalcogenides (TMDs), particularly MoS₂, have emerged as promising electrocatalyst candidates, owing to their abundance, tunable active sites, and defect-rich structures. This review highlights recent progress in leveraging metal doping and heterostructure engineering of MoS₂ to enhance the electrocatalytic activity and selectivity. By compiling insights from experimental studies and density functional theory (DFT) predictions, we examine how defect creation, electronic structure modification, and interface design contribute to improved charge transport and catalytic efficiency. Particular emphasis is placed on rational design principles, synthetic strategies, and operando characterization methods that provide a pathway to understanding and optimizing MoS₂-based materials. We also discuss the challenges of stability, mechanistic ambiguity, and scaling while outlining opportunities to bridge theory and experiment. Collectively, this review underscores how defect and heterostructure engineering of MoS₂ can accelerate the development of efficient, sustainable electrocatalysts for both fuel generation and waste-to-value generation.

View Accepted Manuscript (DOE)

Research Organization:: Univ. of California, Irvine, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: SC0023427

OSTI ID:: 3009134

Journal Information:: ACS Nanoscience Au, Journal Name: ACS Nanoscience Au Journal Issue: 6 Vol. 5; ISSN 2694-2496

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Activating and optimizing MoS2 basal planes for hydrogen evolution through the formation of strained sulphur vacancies Li, Hong; Tsai, Charlie; Koh, Ai Leen Nature Materials, Vol. 15, Issue 1 https://doi.org/10.1038/nmat4465	journal	November 2015
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Tailoring MoS₂ for Small-Molecule Electroreduction: The Role of Metal Doping and Heterostructures