Tungsten-doped MoS2-based nanostructure for photocatalytic hydrogen evolution under visible light

Ahmad K, Raza W, Khan MQ, Khan RA (2024)

Publication Language: English

Publication Type: Journal article

Publication year: 2024

Journal

Reaction Kinetics Mechanisms and Catalysis Springer Verlag (Germany) / Akadémiai Kiadó

DOI: 10.1007/s11144-024-02627-9

Abstract

In this work, we introduced a simple approach to boost the photocatalytic activity of MoS2 by introducing transition metal (W) doping. The W-MoS2 (10 mg) exhibited a substantial enhancement in photocatalytic activity for H2 production, achieving an impressive rate of approximately 925 µmol g−1 after 6 h, which is 1.5-fold higher than bare MoS2. The highest H2 production activity of 1740 µmol g−1 after 6 h was obtained for 50 mg W-MoS2 photocatalyst. The observed increase in activity can be ascribed to the formation of a Schottky barrier at the heterojunction interface, along with advantageous properties of improved active sites resulting from tungsten doping into MoS2. Furthermore, the enhanced activity of W-MoS2 may be attributed to the promotion of catalytic kinetics by tungsten and molybdenum sites, exhibiting commendable activity for water dissociation and higher efficiency in H+ adsorption. These factors contribute significantly to the overall improved performance of the W-MoS2 photocatalyst. Further, platinum (Pt) was also used as cocatalyst and enhanced photocatalytic activity of 2145 µmol g−1 after 6 h was observed for W-MoS2 + 5 wt% Pt.

Authors with CRIS profile

Waseem Raza Lehrstuhl für Werkstoffwissenschaften (Korrosion und Oberflächentechnik) (LKO)

Involved external institutions

Yeungnam University KR Korea, Republic of (KR) King Saud University (KSU) / جامعة الملك سعود‎‎ SA Saudi Arabia (SA) Mahatma Jyotiba Phule Rohilkhand University / रुहेलखण्ड विश्वविद्यालय / மகாத்மா ஜோதிபா பூலே ரோகில்கந்து பல்கலைக்கழகம் IN India (IN)

How to cite

APA:

Ahmad, K., Raza, W., Khan, M.Q., & Khan, R.A. (2024). Tungsten-doped MoS2-based nanostructure for photocatalytic hydrogen evolution under visible light. Reaction Kinetics Mechanisms and Catalysis. https://doi.org/10.1007/s11144-024-02627-9

MLA:

Ahmad, Khursheed, et al. "Tungsten-doped MoS2-based nanostructure for photocatalytic hydrogen evolution under visible light." Reaction Kinetics Mechanisms and Catalysis (2024).

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