In-depth study of the photocatalytic performance of novel magnetic catalysts for efficient photocatalytic degradation of the dye orange G

Elansary, M.; Belaiche, M.; Oulhakem, O.; Alaoui, K. Belrhiti; Lemine, O.M.; Mouhib, Y.; Iffer, E.; Salameh, B.; Alsmadi, A.M.

doi:10.1016/j.materresbull.2023.112598

Cited by 13 publications

(7 citation statements)

References 91 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, even after six cycles, the catalyst's efficiency remains over 70%, only 15% less than its initial usage. This finding underscores the catalyst's notable reusability alongside its high catalytic performance [44].…”

Section: Reusability Of the Catalystmentioning

confidence: 74%

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

Zhang,

Li,

et al. 2024

Processes

View full text Add to dashboard Cite

In this research, a new catalyst for activating persulfate was developed by loading iron and nickel ions onto powdered activated carbon (PAC) for treating methyl orange, and the preparation process was optimized and characterized. The efficacy of the treatment was evaluated using the Chemical Oxygen Demand (COD) removal rate, which reflects the impact of various process parameters, including catalyst dosage, sodium persulfate dosage, and reaction pH. Finally, the recovery and reuse performance of the catalyst were studied, and the intermediate products were analyzed. The optimal conditions for preparing the activated sodium persulfate catalyst were determined to be as follows: a molar ratio of Fe3+ and Fe2+ to Ni of 4:1, a mass ratio of Fe3O4 to PAC of 1:4, a calcination temperature of 700 °C, and a calcination time of 4 h. This preparation led to an increase in surface porosity and the formation of a hollow structure within the catalyst. The active material on the surface was identified as nickel ferrite, comprising the elements C, O, Fe, and Ni. The magnetic property is beneficial to recycling. With the increase in catalyst and sodium persulfate dosage, the COD removal efficiency of the oxidation system increased first, and then, decreased. The catalyst showed good catalytic performance when the pH value was in the range of 3~11. Furthermore, Gas Chromatography–Mass Spectrometry (GC-MS) analysis indicated the complete oxidation of methyl orange dye molecules in the system. This result highlights the important role of the newly developed catalyst in activating persulfate.

show abstract

Section: Reusability Of the Catalystmentioning

confidence: 74%

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

Zhang,

Li,

et al. 2024

Processes

View full text Add to dashboard Cite

show abstract

“…In this complex process, the separation and recombination paths of charge carriers become critical, and successful photocatalytic activity depends on keeping them from recombining. 54 It is well-known documented that RhB is converted into various products, such as acetic acid, formic acid, benzoic acid, hydroxyl benzoic acid, aromatic dicarboxylic acid, poly hydroxyl benzoic acid, and hydroxyl benzoic acid. 55,56…”

Section: Resultsmentioning

confidence: 99%

In situ fabrication of lanthanum-doped nickel oxide nanostructures using sol–gel for the degradation of rhodamine B

Ali,

Nazir,

Sandhu

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

“…As time passed, this characteristic peak first rapidly declined. The 333 nm peak was assigned to the naphthalene ring in the structure of OG [45]. It indicated that the azo bond and aromatic ring in the OG structure were disrupted by SO 4…”

Section: Performance Comparison Of Different Advanced Oxidation Systemsmentioning

confidence: 99%

Degradation of Orange G Using PMS Triggered by NH2-MIL-101(Fe): An Amino-Functionalized Metal–Organic Framework

Mo,

Chen,

Wang

2024

Molecules

View full text Add to dashboard Cite

As an azo dye, OG has toxic and harmful effects on ecosystems. Therefore, there is an urgent need to develop a green, environmentally friendly, and efficient catalyst to activate peroxymonosulfate (PMS) for the degradation of OG. In this study, the catalysts MIL-101(Fe) and NH2-MIL-101(Fe) were prepared using a solvothermal method to carry out degradation experiments. They were characterized by means of XRD, SEM, XPS, and FT-IR, and the results showed that the catalysts were successfully prepared. Then, a catalyst/PMS system was constructed, and the effects of different reaction systems, initial pH, temperature, catalyst dosing, PMS concentration, and the anion effect on the degradation of OG were investigated. Under specific conditions (100 mL OG solution with a concentration of 50 mg/L, pH = 7.3, temperature = 25 °C, 1 mL PMS solution with a concentration of 100 mmol/L, and a catalyst dosage of 0.02 g), the degradation of OG with MIL-101(Fe) was only 36.6% within 60 min; as a comparison, NH2-MIL-101(Fe) could reach up to 97.9%, with a reaction constant k value of 0.07245 min−1. The NH2-MIL-101 (Fe)/PMS reaction system was able to achieve efficient degradation of OG at different pH values (pH = 3~9). The degradation mechanism was analyzed using free-radical quenching tests. The free-radical quenching tests showed that SO4•−, •OH, and 1O2 were the main active species during the degradation of OG.

show abstract

In-depth study of the photocatalytic performance of novel magnetic catalysts for efficient photocatalytic degradation of the dye orange G

Cited by 13 publications

References 91 publications

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

Preparation of Nickel-Based Bimetallic Catalyst and Its Activation of Persulfate for Degradation of Methyl Orange

In situ fabrication of lanthanum-doped nickel oxide nanostructures using sol–gel for the degradation of rhodamine B

Degradation of Orange G Using PMS Triggered by NH2-MIL-101(Fe): An Amino-Functionalized Metal–Organic Framework

Contact Info

Product

Resources

About