Enhancing dye adsorption of wool by controlled and facile surface modification using sodium bisulphite

2021 ◽  
Author(s):  
Zhe Jiang ◽  
Yiyi Zhang ◽  
Nan Zhang ◽  
Qiang Wang ◽  
Ping Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Dye Adsorption ◽  
Sodium Bisulphite

Rapid Dye Adsorption via Surface Modification of TiO2 Photoanodes for Dye-Sensitized Solar Cells

2013 ◽  
Vol 5 (11) ◽  
pp. 5201-5207 ◽  
Author(s):  
Boeun Kim ◽  
Se Woong Park ◽  
Jae-Yup Kim ◽  
Kicheon Yoo ◽  
Jin Ah Lee ◽  
...  
Keyword(s):  
Surface Modification ◽  
Solar Cells ◽  
Dye Sensitized Solar Cells ◽  
Dye Adsorption ◽  
Dye Sensitized ◽  
Sensitized Solar Cells

Surface modification of titania aerogel films by oxygen plasma treatment for enhanced dye adsorption

2015 ◽  
Vol 595 ◽  
pp. 164-170 ◽  
Author(s):  
S. Alwin ◽  
X. Sahaya Shajan ◽  
Ranjini Menon ◽  
P.Y. Nabhiraj ◽  
K.G.K. Warrier ◽  
...  
Keyword(s):  
Surface Modification ◽  
Plasma Treatment ◽  
Oxygen Plasma ◽  
Dye Adsorption ◽  
Oxygen Plasma Treatment ◽  
Aerogel Films

Adsorption of Congo Red Dye onto Raw and Chitosan-Modified Bentonite

2010 ◽  
Vol 156-157 ◽  
pp. 217-224 ◽  
Author(s):  
Shan Ping Li ◽  
Jiang Jie Cui
Keyword(s):  
Surface Modification ◽  
Congo Red ◽  
Dye Adsorption ◽  
Kinetic Studies ◽  
Order Kinetic ◽  
Modified Bentonite ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Cr Concentration ◽  
Red Dye

We studied the effects of surface modification of bentonite with chitosan on its ability to adsorb Congo Red (CR) dye. The adsorption behavior of CR from aqueous solution onto raw (RB) and chitosan-modified (CMB) bentonite samples was investigated as a function of parameters such as initial CR concentration, contact time, pH and temperature. Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to confirm the surface modification. Compared with RB, the adsorption capacity of CMB for CR was greatly enhanced. Kinetic studies indicated that the adsorption of CR on both RB and CMB followed the pseudo-second-order kinetic model. From the thermodynamic parameters, the adsorption of CR on RB and CMB is spontaneous and endothermic. The results indicate that chitosan-modified bentonite provides an important advantage for CR dye adsorption over raw bentonite.

Comparative Study of Gardenia Yellow Dye Adsorption on Cotton Fiber Surface with Reactive and Non-Reactive Modification

2012 ◽  
Vol 441 ◽  
pp. 212-216
Author(s):  
Li Qin Chai ◽  
Jian Zhong Shao ◽  
Lan Zhou
Keyword(s):  
Surface Modification ◽  
Zeta Potential ◽  
Comparative Study ◽  
Cotton Fiber ◽  
Positive Charge ◽  
Dye Adsorption ◽  
Fiber Surface ◽  
Cotton Fibers ◽  
Adsorption Studies ◽  
Reactive Modification

Biquaternary ammonium salt CY and cationic surfactant DAB were investigated as pretreating agents for surface modification of cotton fibers. The measurement of zeta potential was used to indicate the effectiveness of the pretreatment. It was found that CY and DAB both largely enhanced the positive charge on cotton fibers following an increase in the pH. Adsorption studies of gardenia yellow dye on these pretreated cotton fibers showed that both CY and DAB enhance adsorption capacity of gardenia yellow dye on cotton fibers. The zeta potential results and adsorption studies revealed that the uptake of gardenia yellow dye on treated cotton fibers occurs via electrostatic attractions between the anion of the dye and cationic segments of the treated cotton fibers. The washing fastness and crocking fastness of the dyeings were improved after the pretreatments.

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