Enhanced photocatalytic activity of Cu-doped ZnO nanorods

Mohan, Rajneesh; Krishnamoorthy, Karthikeyan; Kim, Sang‐Jae

doi:10.1016/j.ssc.2011.12.008

Cited by 261 publications

(96 citation statements)

References 32 publications

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“…This could be done by shifting the band gap absorption edge of wide band gap semiconductors to a longer wavelength via metal or nonmetal doping. For example, Cu doped ZnO nanorods [14] and Cd doped ZnO nanostructures [15] responded to visible light irradiation in degradation of organic dyes. Furthermore, narrow band gap semiconductor such as manganese oxide (MnO 2 ) nanoparticles [16,17] and vanadium dioxide (VO 2 ) nanoparticles [18] could also be used as visible-light-driven photocatalysts.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Chan

Pung

Sreekantan

2014

Journal of Catalysts

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The visible-light-driven semiconductor photocatalysts are the current research focus techniques used to decompose organic pollutants/compounds. The photodegradation efficiency of organic compounds by photocatalyst is expected to be better compared to UV-light-driven semiconductor photocatalysts technique since the major components of our solar energy are visible light (∼44%). However, as most of the previous research work has been carried out using semiconductor photocatalysts in the form of powder, extra steps and costs are needed to remove this powder from the slurry to prevent secondary pollution. In this research work, we will explain our fabrication technique of V 2 O 5 nanoflakes by growing radially on PET fibers. By utilizing the flexibility and high surface area of polymeric fibers as novel substrate for the growth of V 2 O 5 nanoflakes, the Rhodamine B (RhB) could be degraded under visible light irradiation. The photodegradation of RhB solution by V 2 O 5 nanoflakes followed the 1st order kinetic with a constant rate of 0.0065 min −1 . The success of this research work indicates that V 2 O 5 nanoflakes grown on PET fibre could be possibly used as organic waste water purifier under continuous flow condition. A photodegradation mechanism of V 2 O 5 nanostructures to degrade RhB dye is proposed based on the energy diagram.

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Section: Introductionmentioning

confidence: 99%

Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Chan

Pung

Sreekantan

2014

Journal of Catalysts

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“…Figure 11 shows the photo mineralization of phenol with UV-visible light (solar simulator) in the presence of ZnO. Obviously, when ZnO is added to the phenol, the total organic carbon (TOC) value was reduced to 60% [48][49][50][51].…”

Section: Catalytic Activities Of Cu Oxide and Znomentioning

confidence: 99%

Properties and Catalytic Effects of Nanoparticles Synthesized by Levitational Gas Condensation

Uhm¹

2018

Novel Nanomaterials - Synthesis and Applications

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One of the gas-phased methods of the levitational gas condensation (LGC) process was developed to obtain nanopowders with high purity. The instrument designed by unique concept using magnetically levitated melted droplet of metal is easily operated to synthesize nanopowder with highly defected surface. The complex compounds are also easily prepared using micron powder feeding (MPF) system in the instrument. The metals, ceramics, and carbon-coated metal nanoparticles prepared using the LGC are introduced in this chapter. Various applications such as magnetic and catalytic properties are also introduced. Nanoparticles prepared using LGC showed significantly enhanced catalytic activities during chemical reaction due to the high level of defects on their surface structure. The new heterogeneous catalysts of the solid nanoparticles were introduced in this chapter.

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“…Therefore, the development of visiblelight-driven photocatalysts with high energy transfer efficiency has become one of the most challenging tasks in these days. Therefore, a number of efforts have been attracted to inhibit the recombination of electron-hole pairs and improve charge transport via coupling the wide band gap semiconductor photocatalysts with other materials (Li and Wang 2011), such as metal-doped ZnO composite (Kong et al 2010;Mohan et al 2012), polymer modified ZnO composite (Qiu et al 2008), carbon nanotube (CNTs) (Saleh et al 2011) or graphene-ZnO composites Luo et al 2012).…”

Section: Introductionmentioning

confidence: 99%

Enhancement of zinc oxide-mediated solar light decoloration of Acid Yellow 99 dye by addition of β-CD

Pitchaimuthu¹,

Subramanian²,

Kannan³

et al. 2014

Appl Water Sci

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In the current work, the commercially available ZnO photocatalyst was used to investigate the photodecoloration of Acid yellow 99 (AY99) dye under solar light radiation. Promising enhancement of photodecoloration of AY99 dye was also achieved by the addition of b-cyclodextrin (b-CD) with the ZnO (ZnO-b-CD). The effects of process parameters such as initial concentration, pH, catalyst loading, and illumination time on the extent of decoloration were investigated. The optimum catalyst loading was observed at 2.0 g/L. The higher photoactivity of ZnOb-CD/solar light system than ZnO/solar light system can be ascribed due to the ligand to metal charge transfer (LMCT) from b-CD to Zn II . The complexation patterns have been confirmed with UV-visible and FT-IR spectroscopy and the interaction between ZnO and b-CD has been characterized by FE-SEM, powder XRD analysis, and UV-visible diffuse reflectance spectroscopy.

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Enhanced photocatalytic activity of Cu-doped ZnO nanorods

Cited by 261 publications

References 32 publications

Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Properties and Catalytic Effects of Nanoparticles Synthesized by Levitational Gas Condensation

Enhancement of zinc oxide-mediated solar light decoloration of Acid Yellow 99 dye by addition of β-CD

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Enhanced photocatalytic activity of Cu-doped ZnO nanorods

Cited by 261 publications

References 32 publications

Synthesis of V2O5 Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Synthesis of V2O5 Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Properties and Catalytic Effects of Nanoparticles Synthesized by Levitational Gas Condensation

Enhancement of zinc oxide-mediated solar light decoloration of Acid Yellow 99 dye by addition of β-CD

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Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye

Synthesis of V₂O₅ Nanoflakes on PET Fiber as Visible-Light-Driven Photocatalysts for Degradation of RhB Dye