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Preparation and characterizations of molybdenum oxide and reduced molybdenum oxide thin films for hydrogen generation
(UMT Lahore, 2022-08-01) Abdul Wahaab
Solar driven hydrogen production, also known as photovoltaic hydrogen production, is a promising technology that harnesses the power of sunlight to produce hydrogen gas through water splitting. The produced hydrogen can be used as a clean energy source. In this work, MoO3 thin films were prepared on glass and FTO substrates at 400°C, 500°C, 600°C temperatures under vacuum and oxygen environment, using the chemical vapor deposition technique as photo electrodes for water splitting. It is noticed that the band gap of MoO3 thin film was decreased by increasing the annealing temperature. SEM results depict that the nanorods and nanoneedles like structures are formed by annealing in oxygen and vacuum environment. The photo electrochemical showed that the annealed films have better photocurrent response as compared to pristine MoO3. The solar to hydrogen conversion STH% of MoO3 vacuum-annealed MoO3-500°C is 9 times higher than pure MoO3.