Varisara Phuaran, Muhammad Sohail Ahmad, Kona Sumi, Paundra Rizky Pratama, Yuji Akaishi, Makoto Takafuji, Paravee Vas-Umnuay and Tetsuya Kida
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Interface-engineered CsPbBr3–TiO2 nanocomposites for efficient and selective photocatalytic conversion of HMF to DFF
We report a stable and selective photocatalyst for solar-driven oxidation of 5-hydroxymethylfurfural (HMF) using in situ TiO2 coated CsPbBr3 quantum dots (QDs). Controlled TiO2 encapsulation at 120 °C preserves the structural integrity of the QDs, enhances colloidal stability, and forms a type II heterojunction that facilitates charge separation. The optimized nanocomposite achieves high conversion to 2,5-diformylfuran (DFF) with 90% selectivity under visible light irradiation using TEMPO as a redox mediator. Optical and post-reaction analyses confirm improved stability and suppressed Pb leaching. This work demonstrates that nanoscale interface engineering, combined with mild oxidative pathways, can enable the efficient and selective valorization of biomass-derived substrates.
期刊介绍：
Nanoscale is a high-impact international journal, publishing high-quality research across nanoscience and nanotechnology. Nanoscale publishes a full mix of research articles on experimental and theoretical work, including reviews, communications, and full papers.Highly interdisciplinary, this journal appeals to scientists, researchers and professionals interested in nanoscience and nanotechnology, quantum materials and quantum technology, including the areas of physics, chemistry, biology, medicine, materials, energy/environment, information technology, detection science, healthcare and drug discovery, and electronics.
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