Degradation of Phenol By Photolysis Using N-doped TiO2 Catalyst

Safni, Safni; Wahyuni, Mechy Rezita; Khoiriah, Khoiriah; Yusuf, Yulizar

doi:10.20884/1.jm.2019.14.1.447

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…UV-A light has a longer wavelength and higher energy than UV-C and visible light, enabling deeper penetration into the sample and increased interaction with organic compounds. UV-C light is primarily effective for degrading complex organic compounds, while organic compounds readily absorb UV light compared to visible light [16].…”

Section: Effect Of Light Type and Catalyst Type On Phenol Degradation...mentioning

confidence: 99%

Degradation of Phenol Using Sonolysis and Photolysis by TiO2/RHAC Catalyst and Analysis with Spectrophotometer UV-VIS and HPLC

Safni,

Patricia,

Ollinovela

et al. 2023

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This study focuses on the degradation of phenol in aqueous solutions using photolysis and sonolysis methods. It investigates the impact of catalyst mass, types of light (UV-A, UV-C, and visible light), types of catalyst (RHAC, TiO2, and TiO2/RHAC), and processing time on phenol degradation. The phenol solutions are analyzed before and after degradation using Spectrophotometer UV-Vis and HPLC. The research aims to understand the factors influencing phenol degradation and provide a basis for further studies to enhance the efficiency of phenol removal. Results show significant improvements in degradation percentages of phenol by using TiO2/RHAC as the catalyst. Sonolysis achieves a degradation of 20.82% with a catalyst, which increases to 50.57% with the catalyst. Photolysis achieves a degradation of 29.06%, which rises to 91.99% with the catalyst. The highest degradation percentage is achieved using UV-A light for 5 hours with a catalyst mass of 30 mg of TiO2/RHAC catalyst. HPLC analysis confirms a decreased phenol concentration and the presence of intermediate compounds. The TiO2/RHAC catalyst demonstrates the promising potential for efficient phenol degradation in aqueous solutions.

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Section: Effect Of Light Type and Catalyst Type On Phenol Degradation...mentioning

confidence: 99%

Degradation of Phenol Using Sonolysis and Photolysis by TiO2/RHAC Catalyst and Analysis with Spectrophotometer UV-VIS and HPLC

Safni,

Patricia,

Ollinovela

et al. 2023

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“…These techniques produce and use highly reactive radical like hydroxyl radical (OH•) that degrade the organic pollutants to carbon dioxide and water, which is more environmentally friendly and biodegradable. Degrade organic pollutants with photocatalytic process also known as photodegradation [3].…”

Section: Introductionmentioning

confidence: 99%

Determination of photocatalytic process parameters on phenol degradation using TiO2-MWCNT (cocoPAS) composite

Heltina¹,

Putri²,

Utama³

et al. 2021

Int. J. Sci. Res. Arch.

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Multi-walled carbon nanotubes (MWCNT) were prepared by treatment of cocoPas and titanium dioxide nanocomposites TiO2 – MWCNT (cocoPAS) prepared by stirring and mixing method was used as a photocatalyst for the degradation of phenol in water under light irradiation. The morphology and microstructure of the composites were characterized with SEM, FT-IR, BET, XRD and UV-visible spectrophotometer. The purpose of this study were synthesize TiO2-MWCNT (cocoPAS) composite and evaluate its performance for photodegradation phenol. It was found that the degree of photodegradation of phenol under UV light was highly dependent on the concentration of phenol and the degradation temperature. The presence of MWCNT worked as the adsorbent and electron acceptor to efficiently enhance the phenol photodegradation. The as-prepared nanotubes, with surfactant contents, showed high- photocatalytic activities with increase degradation. These results indicate that TiO2 – MWCNT (cocoPAS)composites using cocoPAS can be used to enhance degradation and can expand potential applications for the degradation of organic pollutants.

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“…Advanced Oxidation Processes (AOPs) are modern methods that can break down organic compounds into simpler molecules, this approach uses hydroxyl radicals (OH•) as an oxidizing agent that include photolysis (used chemical reaction where a chemical compound is broken by photons or light energy), ozonolysis (used organic chemical reaction where ozone/O 3 is employed to cleave the unsaturated bonds), and sonolysis (where used ultrasonic waves). This method which has previously been successful to degrade organic compounds such as the pesticides diazinon, dyes (Safni Safni et al, 2020), phenol (Safni Safni et al, 2019), paracetamol (Safni Safni et al, 2017), and rhodamine B and acid red 14 binary solutions with homogeneous Fenton reaction (Aliasgharlou et al, 2020). Moreover, this method has several advantages, such as a low cost, a short amount of time needed, and the ability to produce environmentally friendly compounds.…”

Section: Introductionmentioning

confidence: 99%

Degradation of Imidacloprid Residue on Red Tomatoes (Solanum lycopersicum) by Advanced Oxidation Processes and Analysis using Spectrophotometer and HPLC

Safni

Jumiaty

Aziz

2021

Valensi

Self Cite

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The insecticide imidacloprid (C9H10ClN5O2) common used by farmers to control pests on red tomato plants, is a dangerous substance classified as a Class II toxic. The imidacloprid residue in red tomatoes enters the body, it will lead to health problems. The purpose of this study was to determine the percentage of imidacloprid residue that can be degraded using the Advanced Oxidation Processes (AOPs) method, which includes sonolysis, sonozolysis, ozonolysis, ozone water, and the effect of various parameters. Processing time, water volume, and red tomato mass were the test parameters studied. The change in imidacloprid residue concentration during the degradation process was measured using a UV/Vis spectrophotometer (double beam) with a wavelength of 200-400 nm and HPLC with mobile phase composition used was acetonitrile/water (65:35 v/v). With a processing time of 10 minutes, the imidacloprid residue in red tomatoes can be degraded 57.38% by sonozonolysis, 63.51 % by sonolysis, 85.17 % by ozonolysis, and 88.76 % by ozone water. The imidacloprid residue in 75 g of red tomatoes could be removed as much as 91.65% by treating with ozone water for 15 minutes. HPLC analysis showed that no intermediate compounds were detected in the imidacloprid residue degradation process in red tomatoes.

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Degradation of Phenol By Photolysis Using N-doped TiO2 Catalyst

Cited by 5 publications

References 16 publications

Degradation of Phenol Using Sonolysis and Photolysis by TiO2/RHAC Catalyst and Analysis with Spectrophotometer UV-VIS and HPLC

Degradation of Phenol Using Sonolysis and Photolysis by TiO2/RHAC Catalyst and Analysis with Spectrophotometer UV-VIS and HPLC

Determination of photocatalytic process parameters on phenol degradation using TiO2-MWCNT (cocoPAS) composite

Degradation of Imidacloprid Residue on Red Tomatoes (Solanum lycopersicum) by Advanced Oxidation Processes and Analysis using Spectrophotometer and HPLC

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