CuO-TiO<sub>2</sub> Nanocatalyst for Photodegradation of Acid Red 88 in Aqueous Solution

Manivel, Arumugam; Selvaraj, N.; Selvam, Panneer; Kumar, Sathish; Anandan, Sambandam

doi:10.1166/sam.2010.1071

Cited by 35 publications

(16 citation statements)

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“…Next, X-ray diffraction (XRD) measurements were carried out on a Shimadzu apparatus (XRD-6000) employing CuKα radiation from 5° < 2 < 80° with a scanning speed of 2° min -1 to investigate the crystalline structures of the catalysts. The angle range and the temperature rate were similar to those used by Manivel et al (2010), Hamed (2010) and Achma et al (2008).…”

Section: Catalyst Characterizationsupporting

confidence: 61%

“…According to Table 2, the copper interaction with TiO 2 resulted in a higher reaction rate than CuO and resulted in a greater activity (Figure 4), most likely because the synergy between CuO and TiO 2 decreased the amount of energy that was required to excite the electrons in the conduction band to the valence band (as explained by Manivel et al (2010)). A single peak was observed at 325 °C for pure CuO.…”

Section: Oxidation Of the Phenolmentioning

confidence: 99%

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OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

Pires¹,

Santos²,

Jordão

2015

Braz. J. Chem. Eng.

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-The Catalytic Wet Air Oxidation (CWAO) of phenol using copper oxide catalysts supported by γ-Al 2 O 3 , TiO 2 , and pillared clay was evaluated to identify which of these catalysts was the most appropriate for this reaction. The CuO/PILC, CuO/γ-Al 2 O 3 and CuO/TiO 2 catalysts were the most successful at removing phenol and resulted in more than 96% conversion. Among these catalysts, CuO/γ-Al 2 O 3 produced the largest amount of CO 2 , the lowest amount of intermediate products and the lowest amount of copper leaching. These results showed that the CuO/γ-Al 2 O 3 catalyst was the best for the end of the reaction. However, the methods used in this study did not allow us to identify the most appropriate reaction time (or catalyst). An alternative approach for this problem was to quantify the costs for each reaction time. Using this approach, the CuO/γ-Al 2 O 3 catalyst was the most economically favorable catalyst when it was used during the first hour of the reaction.

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Section: Catalyst Characterizationsupporting

confidence: 61%

Section: Oxidation Of the Phenolmentioning

confidence: 99%

OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

Pires¹,

Santos²,

Jordão

2015

Braz. J. Chem. Eng.

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“…However, in our experiments this catalyst remained active upon oxidation of the Cu nanoparticles. It is possible to hypothesize that the oxidized material may behave as a binary TiO 2 -CuO composite, which may display better catalytic activity for the oxidation of organic compounds than bare TiO 2 [56]. Because of the low band gap value of CuO (ca.…”

Section: Antibioticmentioning

confidence: 99%

Photocatalytic degradation of ciprofloxacin using mono- (Au, Ag and Cu) and bi- (Au–Ag and Au–Cu) metallic nanoparticles supported on TiO2 under UV-C and simulated sunlight

et al. 2016

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“…Cu-doped TiO 2 or CuO/TiO 2 composite serves as an efficient photocatalytic material in the decomposition of gas-phase alcohols, acid orange 88, methylene blue, etc. [13][14][15]. Cu doping can effectively reduce the wide band gap of TiO 2 by creating defects and d-band states of Cu in TiO 2 and can also act as active trap centers of electrons to reduce carrier recombination [3,16].…”

Section: Introductionmentioning

confidence: 99%

Defect generation, d-d transition, and band gap reduction in Cu-doped TiO2 nanoparticles

2013

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TiO 2 doped with Cu 2+ initiates the formation of brookite phase along with anatase. Doping of Cu 2+ introduces structural defects into TiO 2 . The direct evidence is the low intense and broad diffraction peaks. Raman peaks of doped TiO 2 are also broad and are blueshifted. Pure TiO 2 exhibits an absorption in the UV region, the position of which is shifted towards the visible region on incorporation of Cu into it. The visible absorption peaks arise due to the

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CuO-TiO₂ Nanocatalyst for Photodegradation of Acid Red 88 in Aqueous Solution

Cited by 35 publications

References 0 publications

OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

Photocatalytic degradation of ciprofloxacin using mono- (Au, Ag and Cu) and bi- (Au–Ag and Au–Cu) metallic nanoparticles supported on TiO2 under UV-C and simulated sunlight

Defect generation, d-d transition, and band gap reduction in Cu-doped TiO2 nanoparticles

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CuO-TiO2 Nanocatalyst for Photodegradation of Acid Red 88 in Aqueous Solution

Cited by 35 publications

References 0 publications

OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

OXIDATION OF PHENOL IN AQUEOUS SOLUTION WITH COPPER OXIDE CATALYSTS SUPPORTED ON γ-Al2O3, PILLARED CLAY AND TiO2: COMPARISON OF THE PERFORMANCE AND COSTS ASSOCIATED WITH EACH CATALYST

Photocatalytic degradation of ciprofloxacin using mono- (Au, Ag and Cu) and bi- (Au–Ag and Au–Cu) metallic nanoparticles supported on TiO2 under UV-C and simulated sunlight

Defect generation, d-d transition, and band gap reduction in Cu-doped TiO2 nanoparticles

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CuO-TiO₂ Nanocatalyst for Photodegradation of Acid Red 88 in Aqueous Solution