New copolymer of acrylamide with allyl methacrylate and its capacity for the removal of azo dyes

Novel hydrogel poly (GG-co-acrylic acid) for the sorptive removal of the color Rhodamine-B from contaminated water

“…Stretching of the - O -H and carbonyl (C O) functionalities of the AAc segment results in intense (1712 cm −1 ) and broad (3547 cm −1 ) signals in the copolymeric p(GG- co -AAc) hydrogel's FTIR spectrum ( Fig. 2 ) [ [41] , [42] , [43] , [44] ]. The development of bands at 1448 cm −1 and 1541 cm −1 , attributed to the symmetric and asymmetric stretching of the C O group, respectively, provided additional proof that AAc was present in the hydrogel matrix.…”

Preparation of Magnetic Composite Polyaniline/Fe3O4−Hydrotalcite and Performance in Removal of Methyl Orange

“…Among them, adsorption is the popular method because of its efficiency and economy. The adsorbents which were widely used to remove azo dyes are either inorganic such as activated carbon [3][4][5][6], hydrotalcite [7][8][9][10], diatomite [11][12][13][14][15] and bentonite [16][17][18][19], or organic such as chitosan, alginate, polysaccharide, and polymer materials [20][21][22][23][24][25][26][27][28][29][30][31] and also hybrid and composite material [32][33][34][35][36][37][38][39]. However, the most challenge for the above adsorbents is the low adsorption capacity and efficiency.…”