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Hydrogen production as alternative energy source is still a challenge due to the lack of efficient and inexpensive catalysts, alternative to platinum. Thus, stable, earth abundant, and inexpensive catalysts are of prime need for hydrogen production via hydrogen evolution reaction (HER). Herein, we present an efficient and stable electrocatalyst composed of earth abundant TiO2 nanorods decorated with molybdenum disulfide thin nanosheets, a few nanometers thick. We grew rutile TiO2 nanorods via the hydrothermal method on conducting glass substrate, and then we nucleated the molybdenum disulfide nanosheets as the top layer. This composite possesses excellent hydrogen evolution activity in both acidic and alkaline media at considerably low overpotentials (350 mV and 700 mV in acidic and alkaline media, respectively) and small Tafel slopes (48 and 60 mV/dec in acidic and alkaline conditions, respectively …
American Chemical Society
Publication date: 
30 Jan 2019

Aneela Tahira, Zafar Hussain Ibupoto, Raffaello Mazzaro, Shuji You, Vittorio Morandi, Marta Maria Natile, Mikhail Vagin, Alberto Vomiero

Biblio References: 
Volume: 2 Issue: 3 Pages: 2053-2062
ACS Applied Energy Materials