TY CONF TI THE INFLUENCE OF pH ON THE SYNTHESIS OF STABLE COLLOIDAL SOLUTIONS OF COPPER (I) OXIDE NANOPARTICLES KW copper(I) oxide KW pH medium KW polyethylene glycol KW ascorbic acid KW photocatalyst JO PHYSICAL BASIS OF SCIENCE-INTENSIVE TECHNOLOGIES IN THE MODERN WORLD AU Sharapova, A.A. AU Burinskaya, A.A. PY 2025 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov