Hierarchical TiO2 spheroids decorated g-C3N4 nanocomposite for solar driven hydrogen production and water depollution. (19th January 2022)

• Record Type: Journal Article
• Authors: Sundaram, Induja M.; Kalimuthu, Sivaprakash; P, Gomathi Priya; Sekar, Karthikeyan; Rajendran, Saravanan
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 6(2022)
• Page Start: 3709
• Page End: 3721
• Publication Date: 2022-01-19
• Subjects: TiO2 spheroids -- Nanocomposite -- Hydrogen evolution -- Photocatalyst -- Z-scheme; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2021.10.261
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: A novel hierarchical TiO2 spheroids embellished with g-C3 N4 nanosheets has been successfully developed via thermal condensation process for efficient solar-driven hydrogen evolution and water depollution photocatalyst. The photocatalytic behaviour of the as-prepared nanocomposite is experimented in water splitting and organic pollutant degradation under solar light irradiation. The optimal ratio of TiO2 spheroids with g-C3 N4 in the nanocomposite was found to be 1:10 and the resulting composite exhibits excellent photocatalytic hydrogen production of about 286 μmol h −1 g −1, which is a factor of 3.4 and 2.3 times higher than that of pure TiO2 and g-C3 N4, respectively. The outstanding photocatalytic performance in this composite could be ascribed as an efficient electron-hole pair's separation and interfacial contact between TiO2 spheroids with g-C3 N4 nanosheets in the formed TiO2 /g-C3 N4 nanocomposite. This work provide new insight for constructing an efficient Z-scheme TiO2 /g-C3 N4 nanocomposites for solar light photocatlyst towards solar energy conversion, solar fuels and other environmental applications. Graphical abstract: Image 1 Highlights: Hierarchical TiO2 embellished with g-C3 N4 nanosheets via thermal condensation. Excellent charge separation and photocatalytic activity under visible light. Strong Interfacial interaction reduced recombination rates.