Photodegradation of Rhodamine-B Dye under Natural Sunlight using CdO

Abstract

The present study includes synthesis of CdO thin film by simple and cost effective chemical bath deposition method. Cadmium monochloroaceatate were used for preparation of CdO thin film. The structural, optical properties of CdO thin film were investigated with the help of X-ray diffraction (XRD) and UV-Vis NIR double beam spectrometry. The XRD studies revealed that annealed thin film shows crystalline in nature having 48.4 nm in size. The optical band gap of thin film was found to be 2.13 eV. Scanning Electron Microscopy (SEM) images shows sphere like structure which is closely arranged with each other. The presence of functional group was confirmed by Fourier Transform Infra Red (FTIR). Brunauer–Emmett–Teller (BET) surface area analysis confirm formation of a mesoporous CdO with 6.01 m2/g surface area and 31.96 nm average pore diameter. The photocatalytic activity of prepared thin film was checked by using Rhodamine-B as a model dye under natural sunlight and found to be 48%. Copyright © 2022 by Authors, Published by BCREC Group. This is an open access article under the CC BY-SA License (https://creativecommons.org/licenses/by-sa/4.0).

Wastewater Treatment Using High-Performance In Situ Formed Double-Heterojunction Janus Photocatalyst Microparticles Shaped via a Microfluidic Device

“…Figure b shows the photocatalytic activity of Ag 0 /5-Ag 0 -TiO 2 /TiO 2 @PDMS microparticles at different pH values (3, 5, 7, 9, and 11) at irradiation time 30 min as well as (for RhB) 10 g/L PC dose, 15 wt % TiO 2 , 3 wt % salt, and 20 mg/L dye concentration and (for TC) concentration 50 mg/L, 2 g/L PC dose, 10 wt % TiO 2 , and 7 wt % salt as reaction conditions. Figure b presents that at pH 11, the degradation efficiency of RhB and TC is the highest, which is consistent with numerous studies that have been done on the photodegradation of RhB . The process is obviously sped up in alkaline pH solutions and clearly slowed in acidic pH solutions.…”

“…Figure 6b presents that at pH 11, the degradation efficiency of RhB and TC is the highest, which is consistent with numerous studies that have been done on the photodegradation of RhB. 45 The process is obviously sped up in alkaline pH solutions and clearly slowed in acidic pH solutions. The PC electric charges would be responsible for the difference in photodegradation efficacy.…”

Giving a New Status to a Dyes Collection: A Contribution to the Chromotope Project

“…It shows a broad band at 3267 cm −1 , characteristic of stretching vibrations of the O-H group, and the band at 1691 cm −1 has been attributed to the stretching vibration of the C=O bond, both related to the carboxylic acid (Figure 8). The conjugated C=C double bonds of the xanthene The infrared spectrum of Rhodamine B 1 is reported in the literature [52]. It shows a broad band at 3267 cm −1 , characteristic of stretching vibrations of the O-H group, and the band at 1691 cm −1 has been attributed to the stretching vibration of the C=O bond, both related to the carboxylic acid (Figure 8).…”

“…Although a photo-degradation process of several rhodamines, including Rhodamine B 1, has been reported in the literature [51], in the case of our vial, the product did not undergo degradation and remained pure. The infrared spectrum of Rhodamine B 1 is reported in the literature [52]. It shows a broad band at 3267 cm −1 , characteristic of stretching vibrations of the O-H group, and the band at 1691 cm −1 has been attributed to the stretching vibration of the C=O bond, both related to the carboxylic acid (Figure 8).…”