Synthesis of ZnFe2O4/ZnO nanocomposites immobilized on graphene with enhanced photocatalytic activity under solar light irradiation

Sun, Lin; Shao, Rong; Tang, Lanqin; Chen, Zhidong

doi:10.1016/j.jallcom.2013.02.147

Cited by 184 publications

(71 citation statements)

References 53 publications

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“…To improve the performance of ZnO several attempts have been made to shift its absorption band from UV to visible light region such as doping or coupling ZnO with metals, non metals, and metal oxides [9][10][11] . However, the difficulty in separating of those ZnObased photocatalysts from aqueous solutions limits their application in dyes waste water treatment 12 . One of the effective strategies to solve the problem is to prepare the magnetic photocatalysts with well recyclability by coupling of ZnO The nickel ferrite (NiFe 2 O 4 ) is one of the most important spinal ferrites due to cubic inverse-spinalbased structure, high saturation magnetization, and narrow band gap (1.6 eV) 16,17 .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Zno-Nife2o4 Magnetic Nanocomposites by Simple Solvothermal Method for Photocatalytic Dye Degradation Under Solar Light

Rahmayeni¹,

Zulhadjri²,

Jamarun³

et al. 2016

Orient. J. Chem

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ZnO-NiFe 2 O 4 magnetic nanocomposite photocatalysts were successfully synthesized by simple solvothermal method using nitric salts as starting materials and ethanol as solvent. The synthesized samples were characterized by XRD, FESEM-EDX, TEM, DRS-UV-vis, VSM, and FTIR instruments. Photocatalytic activity of the samples was evaluated by dye degradation under solar light irradiation. The results show that the diffraction peaks of nanocomposites correspond to the hexagonal wurzite of ZnO and spinal cubic structure of NiFe 2 O 4 . The microstructure studies revealed that nanocomposites were dominated by granular-like of ZnO nanoparticles were synthesized at 180°C and rod-like at 200°C. The estimated band gap value of ZnO-NiFe 2 O 4 (1:0.01) nanocomposites is 2.78 eV which is lower than ZnO. The magnetic saturation (Ms) result showed a superparamagnetic behavior for nanocomposites. It was found that the photocatalytic activity of synthesized nanocomposites were higher than ZnO and NiFe 2 O 4 .

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Section: Introductionmentioning

confidence: 99%

Synthesis of Zno-Nife2o4 Magnetic Nanocomposites by Simple Solvothermal Method for Photocatalytic Dye Degradation Under Solar Light

Rahmayeni¹,

Zulhadjri²,

Jamarun³

et al. 2016

Orient. J. Chem

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“…[82][83][84][85] Consequently, the improvement of photocatalytic activity of ZnO-GR composites is also attributed to other factors such as rising the amount of electron acceptor and transport channel, increasing specific surface area of reactive sites, increasing light harvesting, and so on. [73,75,[86][87][88] [66] [45]…”

Section: Coupling Carbon Materialsmentioning

confidence: 99%

Enhanced Photocatalytic Performance of ZnO through Coupling with Carbon Materials

Qi¹,

Qi²,

Xie³

2017

General Chemistry

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Photocatalytic degradation of organic pollutants is an effective way to overcome environmental pollution. During the past few years, carbon materials have demonstrated great potential to improve photocatalytic performance of ZnO nanomaterials. This review will comment on recent developments of carbon materials (including fullerene, carbon nanotube, and graphene) coupling to improve photocatalytic performance of ZnO for photodegradatation of organic pollutants. The effects of carbon materials on enhancing photocatalytic performance of ZnO include enhancing structure stability, increasing amounts of active sites of pollutant adsorption, boosting electron acceptor formation and transport, enhancing photosensitization, narrowing band gap, etc. Moreover, basic mechanisms how carbon materials enhance photocatalytic activity of ZnO materials are discussed according to the interaction between ZnO and carbon materials. Finally, concluding remarks and current challenges are highlighted with perspectives for future developments of ZnO-based carbon photocatalysts. This review aims at recent research advances on ZnO-based carbon photocatalysts developed for photocatalysis of organic contaminant degradation.

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“…Some researchers have made various modifications such as doped with metal 6,7 , nonmetallic 8 , metal/carbon 9 , and metal oxides 10 . However, the photocatalysts are still difficult to separate from the liquid for the subsequence process 11 .…”

Section: Introductionmentioning

confidence: 99%

Magnetically Separable ZnO-MnFe2O4 Nanocomposites Synthesized in organic-free Media for dye Degradation Under Natural Sunlight

Rahmayeni¹,

Arief²,

Jamarun³

et al. 2017

Orient. J. Chem

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Magnetically separable ZnO-MnFe 2 O 4 nanocomposites were synthesized in organic-free media. The samples were characterized by several techniques. The photocatalytic activities of the nanocomposites were tested by degradation of Rhodamine B and wastewater of batik dye under natural sunlight irradiation. X-ray diffraction (XRD) pattern of composites is well in agreement with the standard of the hexagonal wurtzite phase of ZnO and spinel cubic phase of MnFe 2 O 4 . Scanning Electron Microscope (SEM) image illustrates the morphology of the nanocomposites are square plate-like and porous. The magnetic properties of composites were characterized by Vibrating Sample Magnetometer (VSM) show the superparamagnetic properties of all nanocomposites. Optical properties study indicated that addition of MnFe 2 O 4 to ZnO decreases the band gap. The removal of Rhodamine B (10 mg L −1 ) and wastewater of batik dye solution by ZnO-MnFe 2 O 4 (1:0.1) composite after 3 h reached 96.7% and 95.1 %.

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Synthesis of ZnFe2O4/ZnO nanocomposites immobilized on graphene with enhanced photocatalytic activity under solar light irradiation

Cited by 184 publications

References 53 publications

Synthesis of Zno-Nife2o4 Magnetic Nanocomposites by Simple Solvothermal Method for Photocatalytic Dye Degradation Under Solar Light

Synthesis of Zno-Nife2o4 Magnetic Nanocomposites by Simple Solvothermal Method for Photocatalytic Dye Degradation Under Solar Light

Enhanced Photocatalytic Performance of ZnO through Coupling with Carbon Materials

Magnetically Separable ZnO-MnFe2O4 Nanocomposites Synthesized in organic-free Media for dye Degradation Under Natural Sunlight

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