Hydrogen production using solar grade wasted silicon

摘要: Abstract In recent years, establishing a reliable and effective technology to recycle or recover valuable material from the spent modules development discharges has gained worldwide recognition popularity as an environmentally friendly way of disposing industrial production wastes. Crystalline silicon wafer plays important role in photovoltaic industry, which gets wasted more than 40% slicing process. The challenge associated with complete removal carbide particles cutting waste conquers key point recycling crystalline silicon. this article, solar grade was reused produce hydrogen via chemical reaction between Si H2O using alkali catalyst photocatalytic water splitting purified photocatalysts. structure, compositional optical properties were investigated by X-ray diffraction (XRD), photoelectron spectroscopy (XPS), UV-visible (UV-vis) spectroscopy. morphology powder measured scanning electron microscopic(SEM), high resolution transmission microscopic (HRTEM). Electronic structure characterized photoluminescence spectroscopy(PL). Although subjecting series treatments, there is still few existed refined powder. amount H2 detected (2.055 mmol) catalytic greatly exceeds yield sodium hydrate (0.2 mmol), indicating feasibility catalyzed alkali. displayed activity for presence oxalic acid sacrifice reagent. study proposes methods utilization discharge cells, yielding evolution advantages low energy consumption, pollution, easy operation.