Synthesis and characterization of 2-D La-doped Bi2O3 for photocatalytic degradation of organic dye and pesticide

Khairnar, Subhash Dharmraj; Kulkarni, Anil N.; Shinde, Sachin Girdhar; Marathe, Sunil D.; Marathe, Yogesh V.; Dhole, S.D.

doi:10.1016/j.jpap.2021.100030

Cited by 38 publications

(8 citation statements)

References 82 publications

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“…But, they have a huge band gap (4-6 eV), which means it can only absorb UV light, is a substantial hurdle to its real-world use [10,11]. Recently, Subash D et al [12] synthesized Bi 2 O 3 nano layers by chemical deposition route. Photocatalytic degradation of organic dyes revealed that Bi 2 O 3 has lower photosensitivity and creates fewer pairs of electrons and holes, restricting their ability to use the entire UV spectrum.…”

Section: Introductionmentioning

confidence: 99%

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Ramesh¹

2021

SN Appl. Sci.

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Pure NiO, N-doped, Fe-doped, N and Fe codoped NiO NPs were fabricated via a precipitation process. The powder X-ray diffraction (XRD) revealed the face centered cubic phase of NiO products. The full width at half maximum (FWHM) of the XRD peak was steadily enlarged with the order of elements N, Fe, N/Fe doped to NiO, and shifted towards a greater angle due to decrease in grain size, as shown by XRD. The average crystallite size of NiO products was calculated, ranging from 6.67 to 3.76 nm, according to the Debye Scherrer formula. The scanning electron microscopy (SEM) demonstrated considerable morphological changes in the produced nanoparticles, including those directed to rock-like geometries (NiO and Fe/NiO nanoparticles) while gas covered-nanocrystals (N/NiO and N/Fe/NiO nanoparticles) were formed using precipitation method. The particle size range of 10–50 nm was estimated using the bar scale in transmission electron microscopy (TEM) pictures. The elemental composition of Ni, O, Fe and N atoms in the respected samples was analyzed by Energy Dispersive X-Ray Analysis (EDX). Photoluminescence (PL) showed band edge emission at 370 nm. The band edge-absorption peak, which is caused by electronic transitions between energy levels, is determined to be in the range 314–325 nm. A UV–Vis analysis found an energy gap amid 3.2 eV and 2.5 eV. The chemical condition of the Fe and N doped NiO composites were validated using XPS. Using visible photo application of undoped and doped NiO NPs, the degradation of an azo dye termed methylene blue was examined. It was N/Fe/NiO (79.8%), Fe/NiO (76%), N/NiO (73%), and NiO (62%) throughout the 6 h irradiation duration. Increased production of OH• radicals was detected in fluorescence tests using terephthalic acid (TA) for N/Fe/NiO NPs, indicating the higher photo-degradation described. Furthermore, the degradation trends of both undoped and doped NiO NPs closely matched the pseudo first order kinetics, according to the kinetic analysis. There was also a suggestion for a thorough MB breakdown mechanism.

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Section: Introductionmentioning

confidence: 99%

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Ramesh¹

2021

SN Appl. Sci.

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“…( 2 ). where d is crystalline size, K is constant = 0.94, ε is constant = 1 45 . The crystallite size (D) was calculated using the Scherer formula and Williamson‒Hall method are tabulated in Table 1 , whereas, the Williamson-Hall plots are depicted in Fig.…”

Section: Resultsmentioning

confidence: 99%

Tunable sulphur doping on CuFe2O4 nanostructures for the selective elimination of organic dyes from water

Aslam

Abid

Rafiq

et al. 2023

Sci Rep

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In this work, sulphur doped copper ferrites (S-CuFe2O4) photocatalysts were successfully synthesized for the first time using the facile hydrothermal method. The as-synthesized photocatalysts were characterized through XRD, Raman, TGA, FT-IR, UV–Vis-DRS, SEM, EDX and PL techniques. The results revealed that doping with sulphur has been found to be a suitable alternative that causes strain in the lattices as anions replace the oxygen from the CuFe2O4 nanostructures. Due to sulphur dopants, photocatalysts are able to efficiently trap and transfer the photoinduced charges, which readily suppress charge recombination. A UV–Vis spectrophotometer was used to monitor the degradation of selective toxic organic dyes (RhB, CR, MO, and CV) in aqueous media. The dye degradation results provide evidence for the surprisingly superior performance of S-CuFe2O4 over pristine CuFe2O4. On the basis of its efficiencies, this work can be assigned as an excellent candidate for photocatalysis science.

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“…Semiconductor-based photocatalysis has attracted considerable interest as a water treatment method owing to its lower cost, economic feasibility, and environmental friendliness. A major challenge in semiconductor-based photocatalysis is to develop a photocatalyst that absorbs sufficient sunlight , and separates , and generates photogenerated carriers effectively. − …”

Section: Introductionmentioning

confidence: 99%

“…A major challenge in semiconductor-based photocatalysis is to develop a photocatalyst that absorbs sufficient sunlight 9 , 10 and separates 11 , 12 and generates photogenerated carriers effectively. 13 − 15 …”

Section: Introductionmentioning

confidence: 99%

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

et al. 2023

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Fabrication of S-scheme heterojunctions with enhanced redox capability offers an effective approach to address environmental remediation. In this study, high-performance Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunction photocatalysts were fabricated via the in situ growth of Bi 2 Sn 2 O 7 on β-Bi 2 O 3 microspheres. The optimized Bi 2 Sn 2 O 7 /β-Bi 2 O 3 (BSO/BO-0.4) degradation efficiency for tetracycline hydrochloride was 95.5%, which was 2.68-fold higher than that of β-Bi 2 O 3 . This improvement originated from higher photoelectron−hole pair separation efficiency, more exposed active sites, excellent redox capacity, and efficient generation of • O 2 − and • OH. Additionally, Bi 2 Sn 2 O 7 / β-Bi 2 O 3 exhibited good stability against photocatalytic degradation, and the degradation efficiency remained >89.7% after five cycles. The photocatalytic mechanism of Bi 2 Sn 2 O 7 /β-Bi 2 O 3 S-scheme heterojunctions was elucidated. In this study, we design and fabricate high-performance heterojunction photocatalysts for environmental remediation using S-scheme photocatalysts.

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Synthesis and characterization of 2-D La-doped Bi2O3 for photocatalytic degradation of organic dye and pesticide

Cited by 38 publications

References 82 publications

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Tunable sulphur doping on CuFe2O4 nanostructures for the selective elimination of organic dyes from water

Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

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Synthesis and characterization of 2-D La-doped Bi2O3 for photocatalytic degradation of organic dye and pesticide

Cited by 38 publications

References 82 publications

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

N and Fe doped NiO nanoparticles for enhanced photocatalytic degradation of azo dye methylene blue in the presence of visible light

Tunable sulphur doping on CuFe2O4 nanostructures for the selective elimination of organic dyes from water

Self-Assembly of Bi2Sn2O7/β-Bi2O3 S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline

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Self-Assembly of Bi₂Sn₂O₇/β-Bi₂O₃ S-Scheme Heterostructures for Efficient Visible-Light-Driven Photocatalytic Degradation of Tetracycline