Citation: Qi Shen, Ying-Ju Fan, Wei-Min Zhang, Bo-Li Zhu, Ru Wang, Zhong-Xi Sun. Two-dimensional correlation analysis of continuous online in situ ATR-FTIR on the adsorption of butyl xanthate at the surface of a-PbO[J]. Chinese Chemical Letters, ;2015, 26(2): 193-196. doi: 10.1016/j.cclet.2014.07.003 shu

Two-dimensional correlation analysis of continuous online in situ ATR-FTIR on the adsorption of butyl xanthate at the surface of a-PbO

1.
School of Chemistry and Chemical Engineering, University of Ji'nan, Ji'nan 250022, China

Corresponding author: Zhong-Xi Sun,
Received Date: 15 May 2014
Available Online: 1 July 2014
Fund Project: This work was supported by the National Nature Science Foundation of China (Nos. 51274104, 50874052) (Nos. 51274104, 50874052)National Key Basic Research Program of China (973, No. 2011CB933700). (973, No. 2011CB933700)

The adsorption behavior of butyl xanthate on the surface of lead oxide was investigated using continuous online in situ attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy technique and two dimensional (2D) correlation analysis. The adsorbed layer studied was prepared by coating α-PbO particles onto the surfaces of the ZnSe crystal. The appearance of spectral peaks at 1203 cm^-1, 1033 cm^-1 and their red shift indicated the formation and aggregation of xanthate at the surface of α-PbO. According to IR intensity changes after rinsing with deionized water and a NaOH solution, the adsorption was proved to be a chemisorption type. The competition between xanthate and OH^- for the surfaces leads to desorption of xanthate at higher pH. The technique of 2D correlation ATR-FTIR spectroscopy was used to evaluate the changing order of spectral intensities in the adsorption process, and the results indicated that xanthate micelles were formed at the surfaces. The adsorption kinetics of butyl xanthate was found to be a pseudo-second-order reaction model and the adsorption capacity of butyl xanthate at a-PbO was as high as 281 mg g^-1 after 150 min.
- Two-dimensional correlation analysis,
- Continuous online in situ,
- ATR-FTIR,
- Butyl xanthate,
- a-PbO
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沈阳化工大学材料科学与工程学院沈阳 110142