Degradation of residual formaldehyde in fabric by photo-catalysis

作者：Yao Yadong; Guo Xiangli; Kang Yunqing; Li Xieji; Chen Aizheng; Yang Weizhong; Yin Guangfu^*

来源：Journal of Wuhan University of Technology-Materials Science Edition, 2008, 23(2): 147-150.

DOI：10.1007/s11595-006-2147-x

• photo-catalytic degradation
• fabric
• formaldehyde

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(2)CHO 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 1 800 mu g/g can be efficiently treated to satisfy the China National Standard (GB/2912.1-1998) with the photo-catalytic degradation.

• 出版日期2008-4
• 单位四川大学