titanium dioxide particles with quick-acting and long-acting photocatalysis and preparation method thereof

• Main Authors: YAO YUCEN, TIAN LIANGLIANG, TAN NINGHUI, SHAN DEXIN, WANG WEIXUN
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2020
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; METALLURGY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

A titanium dioxide-containing photocatalyst is prepared by uniformly mixing titanium dioxide composite particles which take effect quickly and titanium dioxide composite particles which take effect continuously, wherein the titanium dioxide composite particles which take effect quickly are composed of chitosan, nanoscale titanium dioxide, sodium carboxymethyl cellulose and potassium permanganate,and the titanium dioxide composite particles which take effect continuously are composed of hydroxypropyl methyl cellulose and nanoscale titanium dioxide. The titanium dioxide-containing photocatalysthas a long shelf life, has relatively high photocatalytic degradation activity on organic pollutants, and particularly has very strong degradation activity on methyl orange; and the degradation rateof methyl orange degradation for 2 hours reaches 82% or above, the degradation time is short, the efficiency is high, and a continuous simulated degradation experiment shows that the product still hashigh degradation capacity a