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Effect of inorganic salts on ferric oxalate‐induced decomposition of CI Acid Black 234 under different weather conditions
Author(s) -
Dong Yongchun,
He Luchun,
Wang Qiufang,
Yang Min,
Qi Rong,
Li Kuixiao
Publication year - 2008
Publication title -
coloration technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.297
H-Index - 49
eISSN - 1478-4408
pISSN - 1472-3581
DOI - 10.1111/j.1478-4408.2007.00116.x
Subject(s) - chemistry , decomposition , hydrogen peroxide , photocatalysis , oxalate , chloride , sodium , salt (chemistry) , sodium oxalate , ferric , inorganic chemistry , nuclear chemistry , catalysis , organic chemistry
In this study, sodium chloride and sodium sulphate were used for investigating their effects on photocatalytic decomposition of a triazo acid dye, CI Acid Black 234, used widely for the coloration of leather and wool products by the Fe iii ‐oxalate complexes/hydrogen peroxide system under different weather conditions, respectively. Moreover, the photocatalytic degradation and mineralisation of CI Acid Black 234 was also examined by ultraviolet–visible spectrum and total organic carbon measurements. The results indicated that photocatalytic decoloration of CI Acid Black 234 was significantly limited in the presence of inorganic salt. Increasing the concentration of inorganic salt led to a lower decoloration percentage and kinetic reaction constant. The effect of inorganic salt on dye decomposition varied with solar light intensity. Sodium chloride exhibits a much stronger reduction effect on photocatalytic decoloration, degradation and mineralisation than sodium sulphate at similar reaction conditions, especially on a cloudy day.