Iridium doped ZnO nanocomposites: Synergistic effect induced photocatalytic degradation of methylene blue and crystal violet

Dhanalakshmi, M.; Saravanakumar, K.; Prabavathi, S. Lakshmi; Muthuraj, V.

doi:10.1016/j.inoche.2019.107601

Cited by 56 publications

(9 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Firstly, we note a decrease in PL intensity, indicating that Ce doped ZnO has a low electron-hole recombination rate. 61,62 Thus, ZnO may exhibit better photocatalytic activity than Ce-ZnO under UV irradiation. Overall, data shows that introducing cerium into the structure of zinc oxide decreases ZnO's photocatalytic effectiveness under UV light, instead signicantly increasing the photocatalytic efficiency under visible light.…”

Section: Drs and Pl Resultsmentioning

confidence: 99%

A comparative study of 0D and 1D Ce-ZnO nanocatalysts in photocatalytic decomposition of organic pollutants

et al. 2021

View full text Add to dashboard Cite

show abstract

Section: Drs and Pl Resultsmentioning

confidence: 99%

A comparative study of 0D and 1D Ce-ZnO nanocatalysts in photocatalytic decomposition of organic pollutants

et al. 2021

View full text Add to dashboard Cite

show abstract

“…[33] PL spectrum can be used to analyze the surface oxygen defects and separation ability of the electron and hole pairs of the barium tin hydroxide/tin dioxide nanorods. [35,36] shows the room temperature PL spectrum of the barium tin hydroxide/tin dioxide nanorods. A strong emission peak located at 468.0 nm is observed with a broad band emission range of 400-700 nm.…”

Section: Reactive Species Trapping Experiments and Photocatalytic Mec...mentioning

confidence: 99%

“…Some methods have been utilized to remove the GV dye from wastewater including adsorption method, [2] chemical oxidation method, [3] and photocatalysis technology. [4] Photocatalysis technology takes the advantages of simple treatment process, low cost, and high organic pollutant degradation efficiency. [5] However, the photocatalysts for practical application are restricted owing to high recombination ratio of photogenerated electron-hole pairs.…”

Section: Introductionmentioning

confidence: 99%

A General Hydrothermal Growth and Photocatalytic Performance of Barium Tin Hydroxide/Tin Dioxide Nanorods

Tao

Huang

et al. 2021

Crystal Research and Technology

View full text Add to dashboard Cite

Barium tin hydroxide/tin dioxide nanorods are synthesized by a facile hydrothermal method. The morphology, structure and optical performance of the nanorods are characterized via X-ray diffraction, electron microscopy, X-ray photoelectron spectroscopy and solid ultraviolet-visible (UV-vis) diffuse reflectance spectrum. The nanorods are mainly composed of monoclinic BaSn(OH) 6 and orthorhombic SnO 2 phases with the length and diameter of about 5 µm and 50-150 nm, respectively. The formation process of the nanorods is investigated based on the morphology and structure evolution of the products from different hydrothermal conditions. Solid UV-vis diffuse reflectance spectrum shows that the nanorods belong to typical semiconductor with the band gap of 3.74 eV. The barium tin hydroxide/tin dioxide nanorods are used for the photocatalytic degradation of gentian violet under UV light irradiation. The degradation efficiency reaches 93.2% with the irradiation time of 8 h adding 10 mg nanorods in 10 mL 10 mg mL −1 gentian violet solution. The reactive species trapping results show that hydroxyl radicals, holes and superoxide radicals are main reactive species for gentian violet degradation. The barium tin hydroxide/tin dioxide nanorods are stable for the photocatalytic reaction of the gentian violet.

show abstract

“…In spite of this, interesting advantages can be envisioned for these biobased films e.g., this type of catalyst is entirely constituted of compounds of an organic nature; hence, they can be considered to be "all-polymer" catalysts. Additionally, biobased films acting as catalysts would help replace the use of inorganic, expensive and potentially toxic catalysts based on Rh, Au, Pt, Ir and Ru that commonly display similar or even lower reduction rates after a few cycles of use (Aghakhaninejad, Rahimi, & Zargari, 2018;Chaker, Chérif-Aouali, Khaoulani, Bengueddach, & Fourmentin, 2016;Dhanalakshmi, Saravanakumar, Prabavathi, & Muthuraj, 2020;Masoud, Nourbakhsh, & Hassanzadeh-Tabrizi, 2017;Vaiano & Iervolino, 2019;Zhang et al, 2019). It is well-known that the duration, versatility, and performance of a catalyst are crucial aspects, especially for light-driven chemical reactions of technological importance.…”

Section: Photocatalytic Propertiesmentioning

confidence: 99%

Optical, morphological and photocatalytic properties of biobased tractable films of chitosan/donor-acceptor polymer blends

Jessop

Albornoz

Ramírez

et al. 2020

Carbohydrate Polymers

View full text Add to dashboard Cite

Biobased tractable films consisting of blends of chitosan (CS) with polymer bearing carbazole derivatives as pendant groups and fluorene-thiophene as donor-acceptor units (referred to as DA) were prepared, and their optical, morphological and photocatalytic properties were studied. DA was dissolved in tetrahydrofuran (THF) and mixed with an acidified aqueous solution containing chitosan to obtain chitosan/DA (CS/DA) films by solution casting. The fabricated biobased films were characterized using spectroscopic techniques (FT-IR and UV-vis), thermogravimetry, mechanical assays, contact angle analysis, and atomic force microscopy (AFM). The effects of varying DA compositions and the results of exposure to visible-light irradiation of the films were also analyzed. The results indicated the existence of interactions between chitosan and DA and a potentially profitable light-driven response of these biobased films. This behavior was reflected in the optical, topographical, and contact angle properties of the films, which exhibited different characteristics before and after visible-light exposure. Finally, the photocatalytic performance of the biobased films was tested via the decomposition of methyl orange (MO), as a reaction model system. Our results revealed a significant photocatalytic activity (according to biobased film composition, approximately 64 % and 87 % of methyl orange were degraded under continuous visible-light irradiation for 120 min) of the films which is attributed to the combined presence and synergetic effects of the film-forming ability of chitosan and the photoproperties of DA.

show abstract

Iridium doped ZnO nanocomposites: Synergistic effect induced photocatalytic degradation of methylene blue and crystal violet

Cited by 56 publications

References 35 publications

A comparative study of 0D and 1D Ce-ZnO nanocatalysts in photocatalytic decomposition of organic pollutants

A comparative study of 0D and 1D Ce-ZnO nanocatalysts in photocatalytic decomposition of organic pollutants

A General Hydrothermal Growth and Photocatalytic Performance of Barium Tin Hydroxide/Tin Dioxide Nanorods

Optical, morphological and photocatalytic properties of biobased tractable films of chitosan/donor-acceptor polymer blends

Contact Info

Product

Resources

About