Accelerated photocatalytic degradation of organic pollutants over carbonate-rich lanthanum-substituted zinc spinel ferrite assembled reduced graphene oxide by ultraviolet (UV)-activated persulfate

Jun, Byung-Moon; Elanchezhiyan, S.Sd.; Yoon, Yeomin; Wang, Dengjun; Kim, Soonhyun; Prabhu, Subbaiah Muthu; Park, Chang Min

doi:10.1016/j.cej.2020.124733

Cited by 81 publications

(22 citation statements)

References 62 publications

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“…However, compared with the result in Figure 5, the concentration of RB decreased by 77% within 1 min, this finding proved that the l RB removal is mainly reached by physical adsorption in the early stage. As shown in Figure 10(c), new molecular ion peaks were observed in the MS result at 15 min, among which m/z 331 was the molecular ion peak of RB with four ethyl groups removed (Horikoshi et al, 2002), and m/z 107, 143 and 201 were the molecular iron peaks of small molecule products after the benzene rings in RB were opened (Jun et al, 2020).The molecular ion peak of RB disappeared and the molecular iron peak of small molecules strengthened in the result of mass spectrometry at 30min, as shown in Figure 10(d), indicating that RB was completely degraded. The above results confirm that RB was degraded in the removal process.…”

Section: Mechanisms Analysis 316mentioning

confidence: 95%

Synthesis of zero-valent iron/biochar by carbothermal reduction from wood waste and iron mud for removing rhodamine B

Chen

Liu

Gen

et al. 2021

Environ Sci Pollut Res

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This study proposes a new process to synthesize zero-valent iron/biochar (Fe 0 -BC) by carbothermal reduction using wood waste and iron mud as raw materials under different temperature. The characterization results showed that the Fe 0 -BC synthesized at 1200ºC (Fe 0 -BC-1200) possessed favorable adsorption capacity with the specific surface area of 103.18 m 2 /g, and that the zero-valent iron (Fe 0 ) particles were uniformly dispersed 13 on the biochar surface. The removal efficiency of rhodamine B (RB) was determined 14 to evaluate the performance of the prepared Fe 0 -BC. Fe 0 -BC-1200 presented the best 15 performance on RB removal, which mainly ascribe to that more Fe 0 particles generated at higher temperature. The equilibrium adsorption capacity reached 49.93 mg/g when the initial RB concentration and the Fe 0 -BC-1200 dosage were 100 mg/L and 2g/L, respectively, and the pseudo-second-order model was suitable to fit the removal experimental data. LCMC and XRD analyses revealed that the removal mechanism included the physical adsorption of biochar and the redox reaction of Fe 0 . Moreover, copper existed in the iron mud was also reduced to Cu 0 , which was beneficial to catalyze the oxidation of iron, the degradation of RB was promoted at the same time.

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Section: Mechanisms Analysis 316mentioning

confidence: 95%

Synthesis of zero-valent iron/biochar by carbothermal reduction from wood waste and iron mud for removing rhodamine B

Chen

Liu

Gen

et al. 2021

Environ Sci Pollut Res

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“…Doping copper-magnesium ferrite with Titanium oxide shifted the bandgap (1.65 eV to 2.86 eV), and the charge separation was strongly increased. As a result, it is (Jun et al 2020). The degradation performance of carbonate-rich lanthanum-substituted zinc spinel ferrites had twice the performance of zinc spinel ferrites dispersed in reduced graphene oxide recommended for photocatalytic activity and can easily be removed from water using a magnetic bar.…”

Section: Photodegradation Performancementioning

confidence: 99%

“…Zinc spinel ferrite doped with carbonate-rich lanthanum and dispersed in reduced graphene oxide nanocomposites in the photo-degradation of Rhodamine B dye using ultraviolet light activated by peroxydisulfate (Fig. 4) (Jun et al 2020). Sulfate radicals such as peroxydisulfate have a high oxidative character under oxidation-reduction (redox) reaction (2.5-3.1 V).…”

Section: Photodegradation Performancementioning

confidence: 99%

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Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

et al. 2021

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The rapid urbanization and industrialization is causing worldwide water pollution, calling for advanced cleaning methods. For instance, pollutant adsorption on magnetic oxides is efficient and very practical due to the easy separation from solutions by an magnetic field. Here we review the synthesis and performance of magnetic oxides such as iron oxides, spinel ferrites, and perovskite oxides for water remediation. We present structural, optical, and magnetic properties. Magnetic oxides are also promising photocatalysts for the degradation of organic pollutants. Antimicrobial activities and adsorption of heavy metals and radionucleides are also discussed.

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“…The summary of selected materials containing spinel ferrites is presented in Table 5. Despite the semiconductor and ferrite types, all composites (presented in the Table 5) have revealed high photocatalytic activity, in the range of 96% (ZnS-WO 3 -CoFe 2 O 4 [114] and Ag 3 PO 4 /MnFe 2 O 4 [115]) to even 100% (rGO-based spinel ferrite composites [116,117]). It has also been proven by Abroshan et al [115] that MB degradation for single-phase manganese spinel ferrites and trisilver phosphates is much lower than that for the composite (58%, 80%, and 96%, respectively), probably due to the formation of a heterojunction between the phases, allowing the effective charge separation.…”

Section: Spinel Ferrite Compositesmentioning

confidence: 99%

Application of Spinel and Hexagonal Ferrites in Heterogeneous Photocatalysis

et al. 2021

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Semiconducting materials display unique features that enable their use in a variety of applications, including self-cleaning surfaces, water purification systems, hydrogen generation, solar energy conversion, etc. However, one of the major issues is separation of the used materials from the process suspension. Therefore, chemical compounds with magnetic properties have been proposed as crucial components of photocatalytic composites, facilitating separation and recovery of photocatalysts under magnetic field conditions. This review paper presents the current state of knowledge on the application of spinel and hexagonal ferrites in heterogeneous photocatalysis. The first part focuses on the characterization of magnetic (nano)particles. The next section presents the literature findings on the single-phase magnetic photocatalyst. Finally, the current state of scientific knowledge on the wide variety of magnetic-photocatalytic composites is presented. A key aim of this review is to indicate that spinel and hexagonal ferrites are considered as an important element of heterogeneous photocatalytic systems and are responsible for the effective recycling of the photocatalytic materials.

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Accelerated photocatalytic degradation of organic pollutants over carbonate-rich lanthanum-substituted zinc spinel ferrite assembled reduced graphene oxide by ultraviolet (UV)-activated persulfate

Cited by 81 publications

References 62 publications

Synthesis of zero-valent iron/biochar by carbothermal reduction from wood waste and iron mud for removing rhodamine B

Synthesis of zero-valent iron/biochar by carbothermal reduction from wood waste and iron mud for removing rhodamine B

Engineered magnetic oxides nanoparticles as efficient sorbents for wastewater remediation: a review

Application of Spinel and Hexagonal Ferrites in Heterogeneous Photocatalysis

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