King Abdulaziz University

Waleed Elsayed Mahmoud

Ahmed Abdullah Salem Al-Ghamdi

Yusuf Abdulaziz Al-Turki

Carbon nanoparticles are decorated with ultrafine hafnium promethium nanowires. Exemplary nanowires of hafnium promethium oxide (e.g., HfPmO) have been fabricated. The carbon nanoparticles decorated with hafnium promethium nanowires may be used in reactions for reducing carbon dioxide to methanol, and have applications as a photocatalyst for energy applications.

Methods for the decoration of carbon nanoparticles with hafnium promethium oxide nanowires for energy applications

The ultraviolet shielding compound is highly transparent in the visible light spectrum and shields approximately 100% of ultraviolet A (UVA), ultraviolet B (UVB) and ultraviolet C (UVC) radiation. The ultraviolet shielding compound is formed from polyvinyl alcohol (PYA) doped with phosphotungstic acid (HPWO). Preferably, the ratio of phosphotungstic acid to polyvinyl alcohol is 1. The ultraviolet shielding compound may be formed by first making a polymeric solution of polyvinyl alcohol dissolved in deionized water. Next, phosphotungstic acid is dissolved in deionized water to form an acidic solution. The acidic solution is added to the polymeric solution to form a mixture. The mixture is then thickened and cast. The cast mixture may then be dried to produce the ultraviolet shielding compound in the form of a flexible film.

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Jeddah, Saudi Arabia

Waleed Elsayed Mahmoud