The influence of hydrogen peroxide concentration on catalytic activity of fenton catalyst@bacterial cellulose

13th Joint Conference on Chemistry

Wibowo, Arie^1^2 ; Sihombing, Antonio R S A^1 ; Putra Parmita, Ade Wahyu Yusariarta^1 ; Triadhi, Untung^3 ; Ardy, Husaini^1

Department of Material Engineering, Faculty of Mechanicals and Aerospace Engineering, Institut Teknologi Bandung (ITB), Jl. Ganesha 10, Bandung, Indonesia^1

Research Center for Nanosciences and Nanotechnology, ITB, Indonesia^2

Department of Chemistry, Faculty of Mathematics and Natural Sciences, ITB, Indonesia^3

关键词: Advanced Oxidation Processes;    Bacterial cellulose;    Energy dispersive spectroscopies (EDS);    Heterogeneous fenton;    Hydrogen peroxide concentration;    Precursor concentration;    Pseudo-first order reactions;    Recalcitrant organic pollutants;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/509/1/012020/pdf
DOI  :  10.1088/1757-899X/509/1/012020

来源: IOP

【 摘 要 】

Utilization of commercial Bacterial Celluloses (BCs) as catalyst support for preparation of heterogeneous fenton catalysts is attractive because catalytic activity of fenton catalyst can be increased by reducing their particles size. In this report, fenton catalyst@BC were prepared by sol gel method with fixed precursor concentration (0.5 M) and varied concentration of H2O2 (0.3, 0.6, 1.2 and 1.7 %v/v) to obtain optimum condition for fast degradation of Methylene Blue (MB). Scanning Electron Microscope (SEM) showed that micron-sized particles with particle sizes 1002.7 ± 511.5 nm has been successfully deposited on the surface of BC aerogel. Energy Dispersive Spectroscopy (EDS) results revealed that a small portion of iron oxide is observed in sample, even though the dominant elements in sample are sodium and chloride. UV-Vis spectroscopy unveiled that catalytic degradation profile of MB follows pseudofirst order reaction kinetics and the fastest degradation of MB was observed at 1.2 %v/v of H2O2 with Constanta of degradation rate (k) value is 2.65 × 10-2 min-1. Finding optimum condition for fastest degradation of MB is essential for the effort to completely remove dyes from clean water.