Volume 8, Issue 2, February – 2023 International Journal of Innovative Science and Research Technology ISSN No:-2456-2165 IJISRT23FEB1251 www.ijisrt.com 1627 Surface Modified MgFe Layered Double Hydroxide: An Efficient Photo Catalyst for Degradation of Methyl Orange Jaishri Jadham, Mompiya Sanyal, Shital Joshi, Shikha Sharma, Uma Sharma School of Studies in Chemistry and Biochemistry, Vikram University Ujjain (M.P.) 456010 India Co-Author Mompiya Sanyal ORCID- 0000-0003-4466-2383 Co-Author Shital Joshi ORCID- 0000-0002-3781-4062 *Corresponding Author: Jaishri Jadham ORCID-0000-0003-1879-2598 Co-Author Shikha Sharma ORCID – 0000-0001-8056-7418 Co-Author Dr. Uma Sharma, Professor ORCID: 0000-0002-5762-7694 Abstract:- Surface modified Mg-Fe layered double hydroxide materials by CTAB are used for photo catalytic degradation of methyl orange. Mg-Fe LDH (material-1) was prepared by co-precipitation method and material-2 was prepared by intercalation of CTAB into material-1. Further, calcination and surface modification of material-2 was done to get material-3.All these materials were characterized by FT-IR. Structure and composition was confirmed by XRD and SEM with EDX. Surface area of prepared material 1,2 and 3 was determined by BET analysis and the values of surface area are 28.54, 18.29 and 4.95m 2 /g and pore size is 10.6, 7.9 and 9.2 nm respectively. The band gap values obtained on the basis of DRS studies for materials-1,2 and 3 are 3.9 , 3.9 & 3.2 eV respectively. Photo catalytic degradation of methyl orange using material 1, 2 & 3 in the presence of 10 W LED bulb was studied under identical conditions and progress of the reaction was monitored by UV-Vis spectrometer. The catalytic efficiency of material 3, 2 and 1 is 90%, 32%, 2% respectively. Decreasing in particle size after surface modification and enhanced mesoporous nature accounts for the highest catalytic efficiency of material -3 and it is cost effective easy to prepared and eco-friendly. Keywords:- Heterogeneous catalyst, Mesoporous material, Surface modification of LDH, photo catalysis, degradation of methyl orange. I. INTRODUCTION Azo dyes represent one-half of the dyes used in the textile industry. As reported, 20% of dyestuff is discharged directly into the environment by textile factories [1,2]. The decomposition of Azo dyes being difficult results in water pollution and serious environmental issues. New and effective treatment methods are needed for degrading methyl orange in order to reduce the amount of toxic and carcinogenic substances in industrial effluents [3] . This paved the way for the development of new photo-catalyst with specific semiconductor properties which is able to promote advanced photo-oxidation [4]. LDH photo catalysts represent an appealing alternative to conventional semiconductors. High surface area, unique memory effect, low cost, eco- friendly features, versatility in chemical composition and morphology are some of the unique features which make LDH an effective photo-catalyst for degradation of organic pollutants in waste water [5,6]. Reports are available with bimetallic LDH as catalysts which showed positive results in degrading the methyl orange to a greater percentage but required light source consuming high energy and were not time efficient [7,8,9,10] . Looking into this drawback, we tried to design a photo catalyst which is eco-friendly and is highly effective in degradation of methyl orange in a short span of time under visible light and thus is energy efficient. Two dimensional Layered Double Hydroxides(LDH) have attracted significant interest of the researchers due to their extra ordinary semiconductor properties. The layered double hydroxides are synthetic clay or hydrotalcite like material in which positively charged metal hydroxides layers stack alternately with anion interlayer to form sandwich like structure which give them anion exchange properties [11,12,13] . They are represented by general formula [M 2+ M 3+ (OH) 2 X+ (A n- )] x/n .yH 2 O. A large number of LDH are produced by the combination of divalent cations, such as Mg 2+ ,Mn 2+ ,Fe 2+ ,Co 2+ ,Ni 2+ ,Cu 2+ ,Zn 2+ and trivalent cations like Al 3+ , Cr 3+ , Mn 3+ ,Fe 3+ , Co 3+ , La 3+ [14,15,16] . In the present study, we report the synthesis of Mg Fe layered double hydroxide by co-precipitation method which was further intercalated and surface modified by CTAB to improve the properties and efficiency of LDH materials. All the three materials were evaluated for their photo catalytic efficiency to treat methyl orange which is considered as one of the organic pollutants in textile industry.