The metal/metal oxide and halide nanocomposites are emerging and effective photo/electrocatalyst to replace very expensive materials. These are remarkably preferred for efficient hydrogen production in energy conversion and storage technologies. Regardless of recent progress, their activity and durability are still far from adequate, due to less visible light effectiveness, wide band gape and high overpotential and low current density. Herein we successfully applied a novel visible light accessible photo/electrocatalyst, silver-silver bromide doped hollow mesoporous silica-titania (Ag-AgBr/HMST) for overall water splitting. The results of the physicochemical characterization indicates that the nanocomposite has exceptional morphology, high surface area, and uniformly distributed particles. These features exhibits the illustrious visible light induced photo/electrocatalytic behavior for overall water splitting. The hollow silica-titania provides incredible quality conducting channel, to get better mass loading and boost the charge transportation. While well-built connection of Ag, AgBr with titania, provides well active sites that accomplish obvious photo/electrocatalytic performance with OER current density of 10 mAcm⁻² at 280 mV and HER current density of 65 mAcm⁻² at −173 mV. This is almost equal to RuO₂ and Pt/C that are very expensive catalyst for water oxidation. Therefore, the present work establishes the first example of hollow mesoporous photo/electrocatalyst for OER and HER water splitting. The outstanding durability prop up the use of mesoporous material for renewable energy application.

金属/金属氧化物和卤化物纳米复合材料正在出现，并且是代替非常昂贵的材料的有效光/电催化剂。这些对于在能量转换和存储技术中有效地制氢是非常优选的。不管最近的进展如何，由于可见光效率较低，宽带隙，高电势和低电流密度，它们的活性和耐久性仍然远远不够。在这里，我们成功地应用了一种新型的可见光可访问的光/电催化剂，溴化银-银掺杂的空心中孔二氧化硅-二氧化钛（Ag-AgBr / HMST）用于总的水分解。物理化学表征的结果表明，纳米复合材料具有优异的形态，高表面积和均匀分布的颗粒。这些特征展现出杰出的可见光诱导的光/电催化行为，从而使水整体分解。中空的二氧化硅-二氧化钛提供了令人难以置信的高质量导电通道，从而获得了更好的质量负载并促进了电荷传输。尽管Ag，AgBr与二氧化钛之间的结构良好，但在OER电流密度为10 mAcm时，提供了良好的活性位点，可实现明显的光/电催化性能^-2在280毫伏和HER电流65 MACM的密度^-2在-173毫伏。这几乎等于RuO ₂和Pt / C，它们是用于水氧化的非常昂贵的催化剂。因此，本工作建立了用于OER和HER水分解的中孔介孔光/电催化剂的第一个实例。出色的耐用性支持中孔材料在可再生能源应用中的使用。