Mn-doped ZrO2 nanoparticles as an efficient catalyst for green oxidative degradation of methylene blue

Khaksar, Mostafa; Amini, Mojtaba; Boghaei, Davar M.; Chae, Keun Hwa; Gautam, Sanjeev

doi:10.1016/j.catcom.2015.08.023

Cited by 47 publications

(5 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The prepared catalyst, CPUF, was applied multiple times for reduction of MB, and time required for 100% reduction is documented and presented in Figure 6. The results showed very distinctive trend of catalyst reusability in contrast to the previous reports related to inorganic catalysts [29,30]. This catalyst exhibited progressively enhanced efficiency in five runs of reduction of MB.…”

Section: Reduction Of Methylene Blue (Mb) With Cpuf Andcontrasting

confidence: 63%

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Sultan

Waheed

Bibi

et al. 2019

International Journal of Polymer Science

View full text Add to dashboard Cite

A number of physical, chemical, and biological technologies have been developed to address the issue of synthetic dyes in wastewater. One of the important chemical methods involves reduction of these stringent pollutants into less hazardous products. In this study, a cross-linked polyurethane foam (CPUF) was prepared from toluene diisocyanate (TDI), tetraethylenepentamine (TEPA), and polycaprolactone diol (PCL; Mw: 1000 g/mole). To avoid harmful reducing agents, ecofriendly reduction of methylene blue (MB) was executed with CPUF as catalyst where ascorbic acid and fresh juice extracts were applied as reducing agents. The FTIR and SEM analysis confirmed the chemical composition and porous morphology of CPUF, respectively. The 100% reduction of MB was recorded in just 15 minutes with ascorbic acid and CPUF, while similar result was obtained in 37 minutes in blank experiment composed of only MB and ascorbic acid. Thus, catalytic role of CPUF in reduction process was proved. Fresh fruit extracts also participated in the reduction process, but rate of reaction was accelerated in the presence of CPUF. The reusability study of the catalyst supported its stability and efficiency. All the successful reduction processes followed 1st-order kinetics with highest apparent rate constant for ascorbic acid. Furthermore, phytotoxicity evaluation proved safe reduction of MB with 60% germination index. Hence, it can be concluded that catalytic role of CPUF has been established with safe and biodegradable reducing agents which can be extended to other redox processes.

show abstract

Section: Reduction Of Methylene Blue (Mb) With Cpuf Andcontrasting

confidence: 63%

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Sultan

Waheed

Bibi

et al. 2019

International Journal of Polymer Science

View full text Add to dashboard Cite

show abstract

“…A Pd-supported Cu-doped Ti-pillared montmorillonite catalyst was synthesized for MB degradation [3], and modified TiO 2 /BiVO 4 photocatalysts were found to be active in the degradation of MB [4]. Mn-doped ZrO 2 nanoparticles [5], an MgO-SC CA-Zn hybrid ozonation catalyst [6], Fe 3 O 4 /TiO 2 core/shell nanocubes [7], magnetic SrFe 12 O 19 [8], ZnO/NiFe 2 O 4 nanoparticles [9], Co-Mn-Fe complex oxide catalysts [10], CdS nanowire [11], silver nanoparticle decorated polymeric spheres [12], and Au/ZnO-CeO 2 [13] have been reported for MB degradation.…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic Degradation of Methylene Blue over TiO2 Pretreated with Varying Concentrations of NaOH

2018

View full text Add to dashboard Cite

In this paper, different NaOH concentrations (2, 5, 10, and 15 M) were used to treat {001}TiO2. The effect of NaOH on the crystal structure, morphology, optical properties, light raw electronic-hole recombination, and degradation performance of {001}TiO2 on methylene blue were studied. The results demonstrate that rutile TiO2 appeared when the NaOH concentration was as high as 10 M, showing much better photolytic performance than others. As the concentration of sodium hydroxide increases, the morphology changes accordingly. The specific surface area increases and the optical electronic-hole recombination rate decreases. Radical scavenging tests showed that hydroxyl radical and hole are very important in photocatalysis.

show abstract

“…The degradation of MB dye [90][91][92][93][94] was performed at room temperature using unsupported nanoparticles at an unmodified MB dye pH of ~6; this was also performed to optimize the degradation of MR using Cr2O3NPs. It was observed that the color of the MR dye fades away as the degradation [95][96][97][98][99][100] occurs within just a few minutes of stirring the MR solution in the presence of nanoparticles.…”

Section: Photo Degradation Of Methyl Blue (Mb)mentioning

confidence: 99%

Photo-degradation of four different organic dyes in green synthesized chromium nanoparticles by leaf extracts of ocimum basilicum-lamiaceae (Thiru neetru pathilai)

Dhinakarana¹

2022

YMER

View full text Add to dashboard Cite

Nanotechnology is an escalating field, which has a growing impact in each and every sector. There are many ways for synthesizing nanoparticles but biosynthetic route of nanoparticle synthesis is emerging as a new and safer alternative to the conventional methods. Ocimum basilicum is an age old herb native to Southeast Asia and Central African countries. These plants are generally known to be used in different cuisines world-wide. The aroma emitted from the leaves and the twigs of the fresh and dried plants are well known to have insect repellent property. Estragole, citronellal, limonene and nerolidol are the natural volatile compounds present in the basil leaves which acts as repellents. This plant is also widely used as a scent through which it netted its title Queen (basileus) of aromatic herbs. In present study the Green synthesis of Chromium oxide nanoparticles have been synthesized by Ocimum Basilicum-Lamiaceae (Thiru Neetru Pathilai).This method is completely a green method, free from toxic and harmful solvent. The formation of chromium oxide nanoparticles confirmed by UV-Visible spectrophotometer (UV-Vis), and Fourier transform infrared spectroscope (FTIR). The FTIR measurement was carried out to identify possible functional contain the natural product, responsible for efficient stabilization of chromium oxide nanoparticle.

show abstract

Mn-doped ZrO2 nanoparticles as an efficient catalyst for green oxidative degradation of methylene blue

Cited by 47 publications

References 39 publications

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Ecofriendly Reduction of Methylene Blue with Polyurethane Catalyst

Photocatalytic Degradation of Methylene Blue over TiO2 Pretreated with Varying Concentrations of NaOH

Photo-degradation of four different organic dyes in green synthesized chromium nanoparticles by leaf extracts of ocimum basilicum-lamiaceae (Thiru neetru pathilai)

Contact Info

Product

Resources

About