Photocatalytic degradation of carbofuran by TiO2-coated activated carbon: Model for kinetic, electrical energy per order and economic analysis

Vishnuganth, M. A.; Remya, Neelancherry; Kumar, Mathava; Selvaraju, N.

doi:10.1016/j.jenvman.2016.06.016

Cited by 87 publications

(25 citation statements)

References 40 publications

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“…The electrical energy consumption per order ( E EO, Eq. ) of dye removal was estimated to study on power requirement by the light source employed.

E_{EO} = \frac{16.67 P t}{V \log true(\frac{C_{0}}{C_{normalt}} true)}

where P is the electrical energy consumed during photocatalytic experiment (W) and V is the volume of the reactor.…”

Section: Resultsmentioning

confidence: 99%

“…It can be seen that there was a sharp decrease in E EO with the Cu-doping on TiO 2 and, it decreased gradually with the increase in the dopant quantity. 1.5Cu-TiO 2 needed the lowest E EO of 0.018 kWh m 23 order 21 ( Figure S7 of the Supporting Information Data) [57]. The variation of k with the dopant concentration is also shown in Supporting Information Figure S7.…”

Section: Cu-tio 2 Particle Size and Morphologymentioning

confidence: 92%

“…The electrical energy consumption per order (E EO, Eq. (5)) of dye removal was estimated [57] to study on power requirement by the light source employed.…”

Section: Cu-tio 2 Particle Size and Morphologymentioning

confidence: 99%

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Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

Ghosh

Chelli

Giri

et al. 2018

Env Prog and Sustain Energy

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The kernel of Thevetia peruviana, a toxic ornamental shrub, is rich in cardiac glycosides and, its concentration could be as high as 4.8%. This work aimed for the functionalization of a photocatalyst support, TiO2 by Cu‐doping using a facile bio‐mediated green methodology. Herein, the mechanism of Cu‐doping on TiO2 mediated by cardiac glycosides present in the bioextract is proposed. Cu(II) was first immobilized on TiO2 and, then the aqueous kernel extract of T. peruviana was used to dope Cu(II) on TiO2 at room temperature. The loading of Cu doped on TiO2 was found to be about 99% of the initial amount of Cu(II) taken in the immobilization stage. With the increase in Cu loading, there was a gradual redshift in the optical absorbance but the optimal dopant concentration was found to be 1.5% (true loading). The polydispersity index was increased by 1.8‐folds due to the transformation of the rutile phase to the anatase phase (maximum 8.48%) and increase in the crystallite size (17.7–24.5 nm). Cu‐doped TiO2 exhibited as high as 75% trypan blue dye degradation in 120 min at the optimal dopant concentration under the visible light irradiation by the combined effect of photocatalysis and photosensitization which was originated in the presence of trypan blue dye. However, the photosensitization effect due to the adsorption of pigments present in the bioextract was also insignificant as evidenced from the decomposition of a colorless pharmaceutical compound. The electron spin resonance spectra confirmed that normalO2•− radicals primarily caused the dye decomposition. © 2018 American Institute of Chemical Engineers Environ Prog, 37: 1901–1907, 2018

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“…The electrical energy consumption per order ( E EO, Eq. ) of dye removal was estimated to study on power requirement by the light source employed.

E_{EO} = \frac{16.67 P t}{V \log true(\frac{C_{0}}{C_{normalt}} true)}

where P is the electrical energy consumed during photocatalytic experiment (W) and V is the volume of the reactor.…”

Section: Resultsmentioning

confidence: 99%

Section: Cu-tio 2 Particle Size and Morphologymentioning

confidence: 92%

See 1 more Smart Citation

Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

Ghosh

Chelli

Giri

et al. 2018

Env Prog and Sustain Energy

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“…The microstructure of different materials are shown in Figure 2. In the absence of porous template, pure SnO 2 (Figure 2a) exhibits a two-dimensional lamellar structure assembled by nanoparticles, with an average particle size of about 20 nm [18]. The possible reason for the formation of SnO 2 aggregates is no template in the synthesis, resulting in a large number of nano-sized SnO 2 particles assembled and connected together to form a lamellar structure.…”

Section: Composition and Structure Of Materialsmentioning

confidence: 99%

“…The k value in degradation of MB (0.061) is slightly higher than that of degrading Rh B (0.054), which reflects that the SD2 sample degrades the MB dye much easier. We also simulate the photodegradation behavior of Rh B and MB dye solution according to the first-order reaction kinetic equation of ln (C 0 /C t ) = k · t [18], in which, k is the first-order reaction rate constant; C 0 is the initial concentration of dye; C t is the dye concentration under different irradiation time, and t is the irradiation time. Figure 6a,b shows the first-order kinetic fitting curves of photodegradation behavior of Rh B and MB dye, respectively.…”

Section: Photocatalytic Performance and Photodegradation Mechanismmentioning

confidence: 99%

SnO2/Diatomite Composite Prepared by Solvothermal Reaction for Low-Cost Photocatalysts

Jiang

Wang

et al. 2019

Catalysts

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Abundant contaminants in wastewater have a negative effect on the natural environment and ecology. Developing highly efficient photocatalysts is a practical strategy to solve the pollution issue. In order to prevent the agglomeration of SnO 2 nanoparticles and improve the photocatalytic efficiency, porous diatomite is adopted as a low-cost template to load monodispersed SnO 2 nanoparticles by solvothermal reaction and sintering method. Through adjusting the mass of reactants, monodispersed SnO 2 nanoparticles (~15 nm) generated on diatomite template achieved the maximum specific surface area of 23.53 m 2 ·g −1 . When served as a photocatalyst for degrading rhodamine B (Rh B) and methylene blue (MB), the composite presents an excellent photocatalytic activity close to pure SnO 2 , and achieves the fast degradation of Rh B and MB dye in 60 min. The degradation process is in well agreement with the first-order kinetic equation. The superior photocatalytic performance of SnO 2 /diatomite composite is attributed to the physical adsorption of dye molecules on the pores of diatomite, and the superior photocatalytic activity of monodispersed SnO 2 nanoparticles. Due to the low-cost of diatomite and the easy preparation of SnO 2 nanoparticles, the SnO 2 /diatomite composite has a promising application prospect, even better than pure SnO 2 photocatalyst. Therefore, during the synthesis process, the selection of suitable templates is very crucial to control the uniform distribution of SnO 2 nanoparticles. As we all know, SnO 2 is often synthesized on graphene nanosheets to enhance the photocatalytic efficiency [8]. For example, Chen et al. [9] synthesized dense SnO 2 layers on two sides of graphene sheets as high-efficient photocatalysts. Wei et al.[10] synthesized dandelion-like SnO 2 on graphene sheets and presented an excellent photocatalytic performance when degrading Rhodamine B. However, the high cost of graphene or graphene oxide confines the wide application of graphene-metal oxides hybrid photocatalysts. As a cheap porous clay mineral, diatomite derives from a kind of single celled aquatic algae. It has some advantages, such as a low cost, large specific surface area, high porosity and chemical resistance. In the reported works about diatomite-based photocatalysts, diatomite is often acted as porous template to load TiO 2 nanoparticles by sol-gel method [11] or hydrolysis-deposition method [12]. However, up to now, there are only two works about SnO 2 /diatomite composites. Zhong et al. [13] synthesized SnO 2 nanowires on diatomite porous substrate. The composite was acted as gas sensing materials for detecting the response to SO 2 gas. Zhen et al. [14] synthesized SnO 2 on diatomaceous earth by hydrothermal method and investigated the potential application in the humidity sensing field. There are no reports about SnO 2 /diatomite photocatalysts.About the synthesis of SnO 2 , hydrothermal or solvothermal method is often adopted to synthesize various SnO 2 nanostructures. In our previous work, SnO 2 nanosheets consi...

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Enhanced Ponceau‐4R and Brilliant Blue Degradation using Mesoporous TiO₂ Nanoparticles with Activated Carbon as Support Material

Ernawati,

Hing Wong,

Amrullah

et al. 2023

ChemistrySelect

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Biomass wastes are inexpensive and readily available to be converted to activated carbon (AC) support material for photocatalysts. This work first synthesized the AC from tamarind fruit shells and then dispersed TiO2 nanoparticles onto the AC to generate AC/TiO2 composites via the ultrasonic‐assisted sol‐gel method. Most TiO2 nanoparticles were uniformly distributed and deposited onto the AC, forming four stable different AC/TiO2 composites. Compared to the pure TiO2 (i. e., 177.19 m2 g−1), the optimal AC/TiO2 (1 : 5) composite exhibited significantly higher specific surface area (i. e., 281.43 m2 g−1). TiO2 anatase phase in the composite enhanced the photocatalytic activity. AC/TiO2 (1 : 5) also exhibited the Pseudo‐Second‐Order Type 1 model, yielding the best dye degradation kinetic fitting of up to 98.4 % under ultraviolet (UV) light. A possible photocatalytic mechanism of dye degradation was proposed. This work provides insights into synthesizing a TiO2 composite using a low‐cost and readily available AC as a support material to promote the photocatalytic activity.

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Photocatalytic degradation of carbofuran by TiO2-coated activated carbon: Model for kinetic, electrical energy per order and economic analysis

Cited by 87 publications

References 40 publications

Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

SnO2/Diatomite Composite Prepared by Solvothermal Reaction for Low-Cost Photocatalysts

Enhanced Ponceau‐4R and Brilliant Blue Degradation using Mesoporous TiO₂ Nanoparticles with Activated Carbon as Support Material

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Photocatalytic degradation of carbofuran by TiO2-coated activated carbon: Model for kinetic, electrical energy per order and economic analysis

Cited by 87 publications

References 40 publications

Steroid glycosides as potential analytes for Cu‐doping on TiO2 for photocatalytic water treatment

Steroid glycosides as potential analytes for Cu‐doping on TiO2 for photocatalytic water treatment

SnO2/Diatomite Composite Prepared by Solvothermal Reaction for Low-Cost Photocatalysts

Enhanced Ponceau‐4R and Brilliant Blue Degradation using Mesoporous TiO2 Nanoparticles with Activated Carbon as Support Material

Contact Info

Product

Resources

About

Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

Steroid glycosides as potential analytes for Cu‐doping on TiO₂ for photocatalytic water treatment

Enhanced Ponceau‐4R and Brilliant Blue Degradation using Mesoporous TiO₂ Nanoparticles with Activated Carbon as Support Material