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The residual formaldehyde(HCHO)in fabric was degraded using photo-catalysis assisted by the compound catalyst of nano-TiO_2 and nano-ZnO.The effects of several factors on the degradation, such as the composing of catalyst,irradiation time,pH value and the H_2CHO concentration of the immersed solution were investigated.Results showed that H_2CHO of the immersed solution had degraded 93% after 5 h irradiation,and the degradation ratio of formaldehyde could be improved and the aging of the fabric can be avoided with the addition of ZnO nanoparticles and pH value of the immersed-fibric solution.The fabric with residual formaldehyde about 1 800μg/g can be efficiently treated to satisfy the China National Standard (GB/2912.1-1998)with the photo-catalytic degradation.
The residual formaldehyde (HCHO) in fabric was degraded using photo-catalysis assisted by the compound catalyst of nano-TiO_2 and nano-ZnO. The effects of several factors on the degradation, such as the composing of catalyst, irradiation time, pH value and The H 2 CHO concentration of the immersed solution were investigated. Results showed that H_2CHO of the immersed solution had degraded 93% after 5 h irradiation, and the degradation ratio of formaldehyde could be improved and the aging of the fabric can avoided with the addition of ZnO nanoparticles and pH value of the immersed-fibric solution. The fabric with residual formaldehyde about 1 800 μg / g can be efficiently treated to the China National Standard (GB / 2912.1-1998) with the photo-catalytic degradation.