Photoelectrocatalytic degradation of rhodamine B pollutant with a novel zinc phosphate photoanode

2021 ◽  
Vol 148 ◽  
pp. 200-209 ◽  
Author(s):  
A. Chennah ◽  
E. Amaterz ◽  
A. Taoufyq ◽  
B. Bakiz ◽  
Y. Kadmi ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Zinc Phosphate ◽  
Photoelectrocatalytic Degradation

Novel ZnFe2O4/TiO2/flake graphite composite as particle electrodes for efficient photoelectrocatalytic degradation of rhodamine B in water

2018 ◽  
Vol 2017 (3) ◽  
pp. 752-761
Author(s):  
Dan Jia ◽  
Jian Yu ◽  
Stephen M. Long ◽  
Hao L. Tang
Keyword(s):  
Rhodamine B ◽  
Air Flow ◽  
Cell Voltage ◽  
Order Rate Constant ◽  
Flake Graphite ◽  
Optimum Conditions ◽  
Solution Ph ◽  
Graphite Composite ◽  
Operating Variables ◽  
Photoelectrocatalytic Degradation

Abstract A novel ZnFe2O4/TiO2/flake graphite composite material was synthesized and used as particle electrodes in a photoelectrocatalytic (PEC) system to investigate the degradation of rhodamine B as a model dye pollutant in water. Results showed that a PEC process with the new composite evidently led to enhanced degradation of rhodamine B due to a synergistic effect of photocatalysis and electrocatalysis. Operating variables including electrolyte concentration, applied cell voltage, air flow, composite dosage, solution pH, and dye concentration were also found to play important roles in rhodamine B removal. A 99.0% removal efficiency was observed within 30 min of treatment under optimum conditions of 0.01 mol/L Na2SO4, applied cell voltage of 15 V, air flow of 20 mL/min, composite dosage of 10 g/L, solution pH of 2, and rhodamine B concentration of 20 mg/L, with a pseudo-first-order rate constant of 0.278 min−1. These findings could provide new insights into the development of efficient PEC technologies on degradation of residual dyes in water.

The improved photoelectrocatalytic degradation of rhodamine B driven by the half-rectified square wave

2013 ◽  
Vol 102 ◽  
pp. 375-380 ◽  
Author(s):  
Han Song ◽  
Jing Shang ◽  
Tong Zhu ◽  
Junhui Ye ◽  
Qian Li ◽  
...  
Keyword(s):  
Rhodamine B ◽  
Square Wave ◽  
Photoelectrocatalytic Degradation

Visible light photoelectrocatalytic degradation of rhodamine B using a dye-sensitised TiO2 electrode

2014 ◽  
Vol 68 (9) ◽  
Author(s):  
Sayekti Wahyuningsih ◽  
Candra Purnawan ◽  
Puspa Kartikasari ◽  
Novita Praistia
Keyword(s):  
Titanium Dioxide ◽  
Visible Light ◽  
Rhodamine B ◽  
Indium Tin Oxide ◽  
Sol Gel ◽  
Tio2 Electrode ◽  
Conductive Glass ◽  
Photoelectrocatalytic Degradation ◽  
Nacl Concentration ◽  
Sol Gel Process

AbstractTitanium dioxide is a promising catalyst for application in the photodegradation of organic pollutants in water due to its powerful oxidising property and long-term photostability. This study presents the production of titanium dioxide using the sol-gel process, dye sensitisation of the TiO2 electrode, and the performance of that cell. Sensitisation of titanium dioxide was performed using a dye, i.e., Fe(II)-polypyridyl complexes. The photoelectrocatalytic degradation of rhodamine B (RB) using ITO/TiO2/dye as electrode was investigated via a series of potentials, from +1.0 V to −1.0 V, and at various pH and NaCl concentration values (ITO is indium tin oxide conductive glass). The photoelectrocatalytic degradation of RB was performed with a visible light lamp. The change in the absorbance of RB with various potentials indicated that the absorbance of RB in solution systems with the sensitised TiO2 electrodes decreased with increasing anodic potential bias. The degradation cell exhibited better performance when the positive anodic bias was applied. The pH values of RB in solution systems also influence the photoelectrodegradation process because of the different RB species present. NaCl concentration also affects the activity of RB photoelectrocatalytic degradation due to changes in the ionic strength character of the electrolyte.

scholarly journals Visible Light Photoelectrocatalytic Degradation of Rhodamine B Using Ti/TiO2-NiO Photoanode

2014 ◽  
Vol 05 (17) ◽  
pp. 1630-1640 ◽  
Author(s):  
Sayekti Wahyuningsih ◽  
Candra Purnawan ◽  
Teguh Endah Saraswati ◽  
Edi Pramono ◽  
Ari Handono Ramelan ◽  
...  
Keyword(s):  
Visible Light ◽  
Rhodamine B ◽  
Photoelectrocatalytic Degradation

scholarly journals Sensor Chemical Oxygen Demand (COD) Berbasis TiO2/Ti Sebagai Elektroda Kerja Untuk Mendeteksi Rhodamine B

2020 ◽  
Vol 7 (1) ◽  
pp. 1027
Author(s):  
Syahrir Syahrir ◽  
Muh. Nurdin ◽  
La Ode Ahmad Nur Ramadhan
Keyword(s):  
Organic Compound ◽  
Surface Morphology ◽  
Chemical Oxygen Demand ◽  
Rhodamine B ◽  
Oxygen Demand ◽  
Test Results ◽  
Initial Concentration ◽  
Working Electrode ◽  
Photoelectrocatalytic Degradation ◽  
Rhodamin B

Photoelectrocatalytic degradation towards rhodamine B (RhB) organic compound has been conducted by using TiO2/Ti as the working electrode. The preparation of TiO2/Ti working electrode was conducted by using anodizing method to compare the data related to the activity of the electrodes. The results showed that TiO2/Ti electrodes was able to change the surface morphology of the electrodes to become more homogeneous. From the test results photoelectrocatalysis activity was obtained at a COD value of 20.40 mL/L which occurred in RhB dyes with an initial concentration of 10 mg/L. Keywords: photoelectrocatalysis, degradation, rhodamine B, TiO2/Ti. ABSTRAK  Degradasi secara fotoelektrokatalitik senyawa organik rhodamine B (RhB) telah dilakukan dengan menggunakan TiO2/Ti sebagai elektroda kerja. Penyusunan elektroda kerja TiO2/Ti disiapkan dengan menggunakan metode anodasi untuk membandingkan data yang berkaitan dengan aktivitas elektroda. Hasil penelitian menunjukkan bahwa elektroda TiO2/Ti mampu mengubah morfologii permukaan elektroda menjadi lebih homogen. Dari hasil uji aktifitas fotoelektrokatalisis diperoleh pada nilai COD 20,40 mL/L yang terjadi pada zat warna RhB dengan konsentrasi awal 10 mg/LKata Kunci: fotoelektrokatalisis, degradasi, rhodamin B, TiO2/Ti.

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