Structural and optical investigation of combustion derived La doped copper oxide nanocrystallites

Devi, L. Vimala; Sellaiyan, S.; Lee, Sejoon; Sivaji, K.

doi:10.1088/2053-1591/aaa7a3

Cited by 28 publications

(4 citation statements)

References 36 publications

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“… 35 Similarly, the change in the intensity and peak position reveals that doping affects the d spacing, lattice parameter and crystal quality. 36 However, Bragg's reflection (400) and (411) at 2 θ of 30.6° and 33.7° correspond to the cubic La 2 O 3 phase (JCPDS card no. 65-3185), as indicated by (♦).…”

Section: Resultsmentioning

confidence: 99%

Functionalized thiazolidone-decorated lanthanum-doped copper oxide: novel heterocyclic sea sponge morphology for the efficient detection of dopamine

et al. 2022

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Section: Resultsmentioning

confidence: 99%

Functionalized thiazolidone-decorated lanthanum-doped copper oxide: novel heterocyclic sea sponge morphology for the efficient detection of dopamine

et al. 2022

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“…Calculated crystallite size for (111) peak decrease from 52 to 14 nm by increasing Al doping ratio. Devi et al (Devi et al, 2018) point out that the crystallinity of the La:CuO film increases as increasing the temperature value. La doping in CuO solution decreases the crystallinity because of the difference of ionic radii and also mains to peak shift.…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

Versatile Approaches to Engineering and Applied Sciences: Materials and Methods

2023

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It is known that construction works cover a fairly wide range of construction works. Public institutions are also trying to meet their needs by conducting tenders, whether it is new construction or major maintenance and repair works. Currently, the Public Procurement Law No. 4734 is the most widely used of the current laws, but the State Procurement Law No. 2886 is preferred for a more limited amount. According to the Public Procurement Law, bidders for construction works tendered are also asked to submit a work experience certificate in order to determine their competence in the professional field. Detailed information is given in the application regulation prepared in accordance with the Law on the possession of this document. Engineers and architects working in the public sector or the private sector as well as public institutions in the construction work of at least 80% of who served in the process of completing the warden, Regional Director, city manager, as manager of a public institution or private sector business partnerships with those who completed the construction work could provide the path to the document as how and to what extent the relevant regulations are described in the document can be edited. Again, the engineers and architects who previously have not completed graduation documents the construction work, five years of work experience for each year to document a certain number ten was given the rights to use, while contracting in the previous years under Carnet Technician, Technician, such as technical officers given the title of this right is not in the business of tendered by Law No. 4734. In addition, since a work experience certificate is not required for construction works commissioned in accordance with Article 22 / d of the Law in accordance with the direct procurement procedure, especially those who work in public institutions located on the borders of metropolitan municipalities using this method may also be eligible for a work completion certificate. jul. In a business partnership, sometimes those who want to have a different work experience certificate can get a completion certificate at the end of the work completed as a junior partner. As a result of the works commissioned in accordance with Article 22 / d, both in business partnerships and in metropolitan areas, the number of those who have the qualification of a contractor increases, but a decrease in qualifications may be observed. In addition to different restrictions on business partnerships, other technical personnel, such as technicians, should also be provided with the legal right granted to engineers and architects, albeit at a low limit, by making new regulations on the subject.

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“…Devi et al synthesized the LaCuO via solution combustion technique to investigate the photoluminescence (PL) properties as well as to study lattice defects 34 . Devi et al explored the optical and structural properties of La‐doped CuO for different concentration and annealing temperatures, fabricated via solution combustion technique 35 . Yan et al fabricated La‐doped CuO via electrodeposition route to explore the photocatalytic reduction of MB dye which was 11.5% greater than pure CuO 36 .…”

Section: Introductionmentioning

confidence: 99%

“…34 Devi et al explored the optical and structural properties of La-doped CuO for different concentration and annealing temperatures, fabricated via solution combustion technique. 35 Yan et al fabricated La-doped CuO via electrodeposition route to explore the photocatalytic reduction of MB dye which was 11.5% greater than pure CuO. 36 Rodney et al synthesized La-doped CuO prepared via solution combustion approach for observing the efficient photocatalytic evaluation of MB dye which was 98%.…”

Section: Introductionmentioning

confidence: 99%

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

Rafique¹,

Khalid

Irshad

et al. 2023

Energy Science & Engineering

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Clean water and renewable energy sources are becoming increasingly important in the current era, as well as a future challenge, and one of the potential solutions is photocatalysis. In the current study, a simple one‐step hydrothermal technique is employed to fabricate the pure and La‐doped CuO (0%, 1%, 3%, 5%, and 7%) photocatalysts. The influence of varying La concentration on structure, morphology, and optical properties is determined by scanning electron microscope (SEM), X‐ray diffraction (XRD), ultraviolet (UV)–visible spectroscopy, and photoluminescence. SEM showed that synthesized nanostructures are irregularly spherical and transform into needle‐like nanostructures on increasing La concentration. XRD revealed the monoclinic phase with a crystallite size of 15–23 nm. The UV–visible spectrum exhibited a decrease in the band gap of La‐doped CuO needle‐like nanostructures from UV to visible light. The composition and purity of synthesized nanostructures are evaluated via the energy‐dispersive X‐ray spectrum which revealed that needle‐like nanostructures are pure without any impurity traces. The synthesized nanostructures were used as a photocatalyst against methylene blue dye to examine their photocatalytic activity. The synthesized CuO‐3La photocatalyst exhibited excellent photocatalytic performance of dye degradation and hydrogen production 95.3 μmol h−1 g−1 with more than 97% cyclic stability. Therefore, the synthesized La‐doped CuO nanostructures are potential candidates for photocatalytic water splitting and hydrogen evolution.

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Structural and optical investigation of combustion derived La doped copper oxide nanocrystallites

Cited by 28 publications

References 36 publications

Functionalized thiazolidone-decorated lanthanum-doped copper oxide: novel heterocyclic sea sponge morphology for the efficient detection of dopamine

Functionalized thiazolidone-decorated lanthanum-doped copper oxide: novel heterocyclic sea sponge morphology for the efficient detection of dopamine

Versatile Approaches to Engineering and Applied Sciences: Materials and Methods

Visible light‐active pure and lanthanum‐doped copper oxide nanostructures for photocatalytic degradation of methylene blue dye and hydrogen production

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