Optical properties and versatile photocatalytic degradation ability of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

Tangcharoen, Thanit; T‐Thienprasert, Jiraroj; Kongmark, Chanapa

doi:10.1007/s10854-018-8924-4

Cited by 41 publications

(28 citation statements)

References 51 publications

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“…Various organic compounds can be employed as the fuel, but these have been conventionally limited to urea, citric acid, tartaric acid, and glycine [15,16]. In our previous studies, we have recently demonstrated the potential use of diethanolamine (DEA) as a novel fuel for sol-gel auto combustion synthesis of nanocrystalline NiAl 2 O 4 , CuAl 2 O 4 , and ZnAl 2 O 4 aluminate spinels [17]. The obtained nano-size aluminate particles exhibited a single phase cubic spinel structure with excellent photocatalytic degradation of phenol rhodamine B (RhB), heteropolyaromatic methylene blue (MB), azoic methyl orange (MO), and methyl red (MR) under ultraviolet irradiation.…”

Section: Introductionmentioning

confidence: 99%

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Effect of calcination temperature on structural and optical properties of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

2019

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NiAl 2 O 4 , CuAl 2 O 4 , and ZnAl 2 O 4 aluminate spinel nanoparticles were synthesized by sol-gel auto combustion method using diethanolamine (DEA) as a fuel. The effects of calcination temperature on structure, crystallinity, morphology, and optical properties of MAl 2 O 4 (M = Ni, Cu, Zn) have been investigated by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), scanning electron microscopy (SEM), UV-visible diffuse reflectance spectroscopy (UV-DRS), and photoluminescence (PL) spectroscopy. The XRD and FT-IR results confirm the formation of single-phase spinel structure of NiAl 2 O 4 , CuAl 2 O 4 , and ZnAl 2 O 4 at 1200, 1000, and 600 ℃, respectively. The direct band gap of these aluminate spinels, calculated from UV-DRS spectra using the Kubelka-Munk function, is found to increase with calcination temperature. The PL spectra demonstrate that NiAl 2 O 4 gives the highest blue emission intensity, while CuAl 2 O 4 and ZnAl 2 O 4 exhibit a very strong violet emission. During fluorescence process, the ZnAl 2 O 4 emits visible light in only violet and blue regions, while NiAl 2 O 4 and CuAl 2 O 4 emissions extend to the green region. It seems therefore that the transition metal type and intrinsic defects in these aluminate powders are responsible for these phenomena.

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Section: Introductionmentioning

confidence: 99%

“…The NiAl 2 O 4 , CuAl 2 O 4 , and ZnAl 2 O 4 nanoparticles were synthesized by the sol-gel auto combustion method[17]. First, stoichiometric amounts of metal nitrate and aluminum nitrate were dissolved in absolute ethanol to obtain a 0.2 mol/L solution.…”

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Effect of calcination temperature on structural and optical properties of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

2019

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“…2 Se 4 ), carrollite (A 1+ B 3:5+ 2 S 4 ), and linnaeite (A 2+ B 3+ 2 S 4 ) [23]. Most especially, spinels offer an efficient path [24], high catalytic activity [25], improved stability [26], useful catalyst [27][28][29][30], and great recyclability [31]. The chemical structure of binary spinel (AB 2 O 4 ) can be replaced by divalent (A = Zn 2+ ) and trivalent (B = Fe 3+ ) metal ions, resulting in photocatalytically active microstructure of zinc ferrite (ZnFe 2 O 4 ) [32].…”

Section: Introductionmentioning

confidence: 99%

An improved method for high photocatalytic performance of ZnAl2O4 spinel derived from layered double hydroxide precursor

Putra

2020

SN Appl. Sci.

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A spinel structure of zinc aluminate (ZnAl 2 O 4) particles provides a prospective material for photocatalytic applications. In this work, zinc aluminate spinel was prepared by an anion-exchange method derived from layered double hydroxides (LDHs) followed by thermal treatment. The mechanism, photoactivity, and effects of both anion substitute and temperature have been investigated. The chemical composition, morphologies, phase structures, porous structures and photocatalytic properties of samples were analyzed using thermogravimetric analysis, scanning electron microscopy, energy-dispersive X-ray spectroscopy, powder X-ray diffraction, gas sorption analysis, and ultraviolet-visible spectroscopy in detail. The results of mesoporous α-ZnAl 2 O 4 indicate that average crystallite size, total pore volume, and BET surface area obtain 9.3 nm, 0.337 cm 3 /g, and 206.13 m 2 /g, respectively. Moreover, zinc aluminate spinel shows well phase after heating at 700 °C and LDHs structures were completely collapsed. The photocatalytic performances of α-ZnAl 2 O 4 have been applied in p-nitrophenol reduction under visible light irradiation and required time at least 9 min. Finally, the new improved method constructs an excellent material for pretreatment of liquid pollutants containing high-level concentration at rapid treatment time.

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“…Aluminates have high thermal stability, mechanical resistance, hydrophobicity and low surface acidity. Nickel aluminates are one of the most important aluminate materials, and have been studied for their many applications, including electrochemical sensing [1], pigments [2], catalysts [3][4][5][6][7], photocatalysts [8][9][10][11][12], magnetic [13] and refractory materials [14]. NiAl 2 O 4 has also attracted attention as a hydrogen storage material [15,16], oxygen carrier in combustion loop reactors [17] and as a component of supercapacitor electrode materials [18].…”

Section: Introductionmentioning

confidence: 99%

“…NiAl 2 O 4 has also attracted attention as a hydrogen storage material [15,16], oxygen carrier in combustion loop reactors [17] and as a component of supercapacitor electrode materials [18]. Very recently, attention has been focused on its photocatalytic performance [10][11][12]. First reports described the utilization of nickel-aluminum layered hydroxides for carbon dioxide conversion [19,20] and for dye degradation [21,22].…”

Section: Introductionmentioning

confidence: 99%

Pristine and Graphene-Quantum-Dots-Decorated Spinel Nickel Aluminate for Water Remediation from Dyes and Toxic Pollutants

Regulska

Breczko

Basa

2019

Water

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Pristine nickel aluminate and the one decorated with graphene quantum dots were prepared via a cost-effective co-precipitation method. Both were fully characterized by thermogravimetry (TGA), differential scanning calorimetry (DSC), attenuated total reflectance Fourier transform infrared (ATR-FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, transmission electron microscopy (TEM), and UV–Vis techniques. The photocatalytic activity of nickel aluminate under simulated solar light irradiation was demonstrated towards potential pollutants, including a series of dyes (rhodamine B, quinoline yellow, eriochrome black T, methylene blue), toxic phenol and fungicide (thiram). Further profound enhancement of the photocatalytic activity of nickel aluminate was achieved after its decoration with graphene quantum dots. The mechanism of the photocatalytic degradation in the presence of the NiAl2O4/graphene quantum dots (GQDs) composite was investigated; hydroxyl radicals were found to play the leading role. This work offers new insight into the application of the conjunction of the inorganic spinel and the carbon nanostructure (i.e., GQDs), but also provides a simple and highly efficient route for potential water remediation from common pollutants, including dyes and colorless harmful substances.

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Optical properties and versatile photocatalytic degradation ability of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

Cited by 41 publications

References 51 publications

Effect of calcination temperature on structural and optical properties of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

Effect of calcination temperature on structural and optical properties of MAl2O4 (M = Ni, Cu, Zn) aluminate spinel nanoparticles

An improved method for high photocatalytic performance of ZnAl2O4 spinel derived from layered double hydroxide precursor

Pristine and Graphene-Quantum-Dots-Decorated Spinel Nickel Aluminate for Water Remediation from Dyes and Toxic Pollutants

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