Energy band gap tuning of LaNiO3 by Gd, Fe and Co ions doping to enhance solar light absorption for efficient photocatalytic degradation of RhB dye: A mechanistic approach

Ghafoor, Aamir; Bibi, Ismat; Ata, Sadia; Majid, Farzana; Kamal, Shagufta; Iqbal, Munawar; Iqbal, Shahid; Noureen, Shazia; Basha, Beriham; Alwadai, Norah

doi:10.1016/j.molliq.2021.117581

Cited by 30 publications

(9 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As the availability of active sites enhanced the absorption of light and hence, higher the elimination of dye due to generation of higher hydroxyl radicals. As the amount of the catalyst increased up to 15 mg, the elimination of dye decreased because of the active sites being blocked due aggregates formation of the catalyst and reduction in the generation of hydroxyl radicals on the catalyst surface [43,44] …”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Ata,

Zaheer,

Tabassum

et al. 2023

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

This work emphasis on the synthesis of Ni0.2Mn0.02Zn0.02O nanoparticles by facile sol‐gel method. The photocatalytic activity was studied for the degradation of methylene blue (MB) dye under the UV light as a function of dye initial concentration, catalyst dose and pH of the medium. Scanning electron microscopy (SEM) and energy dispersive X‐ray (EDX) were utilized for the study of morphological and elemental composition, while XRD analysis was employed for structural study of the prepared material, which formation the phase purity and size was in 20–24 nm range. The bandgap of Zn/Mn co‐doped NiO NPs (3.24 eV) was reduced as compared to pure NiO NPs (3.43 eV). The degradation efficiency of pure NiO NPs and Zn/Mn co‐doped NiO NPs was found to be 70 % (60 min) and 94 % at optimum conditions. The dielectric properties were also studied, which were also improved in response of doping. The findings revealed that the optical and catalytic properties of Zn/Mn co‐doped NiO NPs were improved versus pure NiO NPs, which could be employed for the remediation of dyes in effluents.

show abstract

Section: Resultsmentioning

confidence: 99%

“…As the amount of the catalyst increased up to 15 mg, the elimination of dye decreased because of the active sites being blocked due aggregates formation of the catalyst and reduction in the generation of hydroxyl radicals on the catalyst surface. [43,44]…”

Section: Catalyst Dosementioning

confidence: 99%

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Ata,

Zaheer,

Tabassum

et al. 2023

ChemistrySelect

Self Cite

View full text Add to dashboard Cite

show abstract

“…To LaNiO 3 doped with ions of Gd, Fe, and Co with different ratios, a significant decline in the Eg values from 2.90 to 2.43 eV was shown. The band gap decrease might be due to the deformation induced in Fe-O octahedral or rearranging of the molecular orbitals (Ghafoor et al, 2021). However, the substitution generates certain impurities within the forbidden band, which facilitates the narrowing of the band gap.…”

Section: Effect Of Doping On Band Gapmentioning

confidence: 99%

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Chacaliaza-Ricaldi²,

Marega³

2022

Front. Nanotechnol.

View full text Add to dashboard Cite

Perovskite structures have attracted scientific interest as a promising alternative for water treatment due to their unique structural, high oxidation activity, electronic stability, and optical properties. In addition, the photocatalytic activity of perovskite structures is higher than that of many transition metal compounds. A critical property that determines the high-performance photocatalytic and optical properties is the band gap, lifetime of carrier charge, and band edges relative to the redox potential. Thus, the synthesis/processing and study of the effect on the band gap, lifetime of carrier charge, and band edges relative to the redox potential in the development of high-performance photocatalysts for water treatment are critical. This review presents the basic physical principles of optical band gaps, their band gap tunability, potentials, and limitations in the applications for the water treatment. Furthermore, it reports recent advances in the synthesis process and comparatively examines the band gap effect in the photocatalytic response. In addition to the synthesis, the physical mechanisms associated with the change in the band gap have been discussed. Finally, the conclusions of this review, along with the current challenges of perovskites for photocatalysis, are presented.

show abstract

“… 3 However, these technologies have their own limitations, such as selective adsorption, long processing time, large area occupied, low removal efficiency, and noxious byproducts. 5 These limitations provide a driving force to explore new techniques to efficiently eliminate dye contaminants from various sources. Photodegradation has attracted great attention for organic wastewater as it is economical, green, and can operate at high removal efficiencies.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, some photocatalysts can use natural, visible light, as opposed to articial light. 4,5 Many semiconductor catalysts such as metal oxides (TiO 2 , ZnO, WO 3 , CeO 2 , etc. ), metal suldes (ZnS, CdS, Mo 2 S, Bi 2 S 3 , etc.…”

Section: Introductionmentioning

confidence: 99%

Aminated graphene quantum dots/CdS nanobelts for enhanced photocatalytic degradation of RhB dye under visible light

Lin,

Chen,

Zhou

et al. 2024

RSC Adv.

View full text Add to dashboard Cite

show abstract

Energy band gap tuning of LaNiO3 by Gd, Fe and Co ions doping to enhance solar light absorption for efficient photocatalytic degradation of RhB dye: A mechanistic approach

Cited by 30 publications

References 29 publications

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Zn/Mn co‐doped NiO synthesized by sol‐gel route for the photocatalytic degradation of methylene blue dye

Potential Application of Perovskite Structure for Water Treatment: Effects of Band Gap, Band Edges, and Lifetime of Charge Carrier for Photocatalysis

Aminated graphene quantum dots/CdS nanobelts for enhanced photocatalytic degradation of RhB dye under visible light

Contact Info

Product

Resources

About