Influence of Manganese Substitution on Photocatalytic Activity of Fe3-xMnxO4 Catalyst by Heterogeneous Photo Fenton-like Reaction

Joint Conference on Green Engineering Technology & Applied Computing 2019

工业技术（总论）;计算机科学

Alrozi, Rasyidah^1^2 ; Adzwin Noordin, Nurul^1 ; Edwin, Elsabba^1 ; Aida Zubir, Nor^1^2 ; Nasuha, Norhaslinda^1^2 ; Imam Maarof, Hawaiah^2^3 ; Anuar Kamaruddin, Mohamad^4^5

Faculty of Chemical Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, Pulau Pinang

13500, Malaysia^1

Hybrid Nanomaterials, Interfaces and Simulation (HYMFAST), Faculty of Chemical Engineering, Universiti Teknologi MARA, Cawangan Pulau Pinang, Pulau Pinang

13500, Malaysia^2

Faculty of Chemical Engineering, Universiti Teknologi MARA, Selangor, Shah Alam, Malaysia^3

Environmental Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang, Malaysia^4

Center of Excellence Geopolymer and Green Technology (CEGeoGTech), School of Materials Engineering, Universiti Malaysia Perlis (UniMAP), Perlis, Malaysia^5

关键词: Coprecipitation method;    Degradation kinetics;    First order reactions;    Heterogeneous photo-Fenton;    Photo-catalytic;    Photo-Fenton;    Photocatalytic performance;    Pristine catalysts;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/551/1/012114/pdf
DOI  :  10.1088/1757-899X/551/1/012114

来源: IOP

【 摘 要 】

In this study, the influence of manganese substitution on the photocatalytic activity of heterogeneous Fe3-xMnxO4 catalyst were investigated. The Fe3-xMnxO4 catalysts were synthesized through co-precipitation method at varies manganese (Mn) substitution ratio (x) of 0, 0.1, 0.2, 0.3, 0.4 and 0.5, respectively. The photocatalytic performance of the resultant catalysts were tested in photo Fenton-like degradation of AOII dye in the presence of 22Mm H2O2 at initial pH of 3. Interestingly, discoloration of 95.9% AOII was achieved at optimized x value of 0.3. Enhancement of nearly 98% was observed compared to pristine catalyst (x=0) which was able to degrade up to 48.4% only. In addition, it also demonstrated that the AOII degradation kinetic using Fe3-xMnxO4 catalyst at x=0.3 by photo Fenton-like reaction was fitted well with the first order reaction kinetic (k = 0.018 min-1 and R2 = 0.9862). Thus, it can be suggested that the substitution of Mn into the matrix of iron oxide provides a positive influence in enhancing the overall photocatalytic peformance of heterogeneous Fe3-xMnxO4 catalyst during the photo Fenton-like reaction.