The Influence of Cr3+ on TiO2 Crystal Growth and Photoactivity Properties

International Conference on Advanced Materials for Better Future 2017

Wahyuningsih, S.^1 ; Hidayatika, W.N.^1 ; Sari, P.L.^1 ; Sari, P.P.^1 ; Hidayat, R.^1 ; Munawaroh, H.^1 ; Ramelan, A.H.^1

Inorganic Material Research Group, Faculty of Mathematics and Natural Sciences, Sebelas Maret University, Ir. Sutami Street No. 36 A, Central Java, Surakarta

57125, Indonesia^1

关键词: Annealing process;    Chemical transformations;    Diffractograms;    Fourier transform infra reds;    Photocatalytic activities;    Photochemical process;    Rutile crystal;    Wet impregnation method;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/333/1/012023/pdf
DOI  :  10.1088/1757-899X/333/1/012023

来源: IOP

【 摘 要 】

The photocatalyst technology is an integrated combination of photochemical processes and catalysis in order to carry out a chemical transformation reaction. One of the semiconductor materials that have good photocatalytic activity is TiO2anatase. This study aim to determine the effect of the Cr3+addition on the growth of TiO2rutile crystal and the increasing of TiO2photoactivity. Diffractogram X-Ray of the samples showed that the synthesized TiO2at 400 °C has been produced 100% TiO2anatase. Synthesis of TiO2doped Cr3+composite was using wet impregnation method. The TiO2doped Cr3+composites have beed grown by annealed at a temperature of 300, 400, 500, 600 and 700 °C, respectively Annealing process have capabled to gain to the TiO2doped Cr3+nanocomposite. The result product annealed at 500 °C only appear anatase phase due to the Cr3+addition influence that was able to suppress the growth of rutile. Identification of TiO2doped Cr3+composite using Fourier Transform Infra-Red (FT-IR) showed O-Cr vibration at 2283.72 cm-1. The TiO2doped Cr3+photoactivity was studied to degrade Rhodamin B. The best result on photodegradation of Rhodamin B was performed by using TiO2doped Cr3+composite which was annealed at 700 °C i.e. 74.71%.