Silver nanoparticles and defect-induced visible light photocatalytic and photoelectrochemical performance of Ag@m-TiO2 nanocomposite

Ansari, Sajid Ali; Khan, Mohammad Mansoob; Ansari, Mohd Omaish

doi:10.1016/j.solmat.2015.05.029

Cited by 131 publications

(66 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As can be seen, the arc radius in the Nyquist plot obtained to CuTsPc/TiO 2 photoelectrochemical sensor showed smallest radius value under visible LED light irradiation in comparison to dark condition. The smaller arc radius in the Nyquist plot indicates a smaller electron transfer resistance at the surface of the photoelectrochemical device, which normally leads to more effective separation of the photoelectron‐hole pairs and faster interfacial charge transfer .…”

Section: Resultsmentioning

confidence: 99%

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

2016

View full text Add to dashboard Cite

In this manuscript, a novel photoelectroanalytical sensor for detection of dopamine based on anatase TiO2 nanoparticles sensitized with copper tetrasulfonated phthalocyanine (CuTsPc/TiO2) was developed. The CuTsPc/TiO2 photoelectroanalytical sensor shows high anodic photocurrent under visible light emitting diode irradiation in comparison to pure anatase TiO2 nanoparticles. The CuTsPc/TiO2 composite shows a photocurrent about 2.5‐fold higher than those of pure TiO2 nanoparticles or CuTsPc modified electrode. The CuTsPc/TiO2 composite shows a low charge transfer resistance in comparison to its individual components as well as the impedance circle radius decreases significantly under UV light illumination. Under optimized conditions, the photoelectroanalytical sensor shows a linear response range from 4 up to 810 µmol L−1 with a sensitivity of 3.0 nA L µmol−1 and limit of detection of 0.5 µmol L−1 for the detection of dopamine. The photoelectrochemical sensor shows high photocurrent to dopamine in comparison to foreign species such as ascorbic acid, uric acid, glucose, K+, Na+, and Cl−.

show abstract

Section: Resultsmentioning

confidence: 99%

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

2016

View full text Add to dashboard Cite

show abstract

“…Figure 3 shows the effect of pH on photo catalytic activities of Agdoped manganese oxide [28]. Similarly, Ansari et al [29] have reported that TiO 2 and Agdoped TiO 2 catalyzed photo degradation of methyl orange and methylene blue dyes. It was found that 42% and 88% degradation of methyl orange and methylene blue dye was achieved after 6 h of reaction.…”

Section: Mechanism Of Photo Catalytic Degradationmentioning

confidence: 74%

Catalytic Degradation of Organic Dyes in Aqueous Medium

Saeed¹,

Usman²

2018

Photochemistry and Photophysics - Fundamentals to Applications

View full text Add to dashboard Cite

Water pollution by the textile industry is an emerging issue. Textile industry is the major industrial sector which contributes to water pollution. Textile industry releases a huge amount of unfixed dyes in wastewater effluents. About 20% of the dye production all over the world is discharged as waste in industrial effluents by textile industry. These dyes are highly stable and colored substances which disturb the aqueous ecosystem significantly. Therefore, there is a need for methods to remove organic dyes from textile industrial effluents. Photo catalysis and catalytic wet oxidation are best practices for degradation of dyes in wastewater. In photo catalysis, the dye molecules can be completely degraded into inorganic non-toxic compounds by irradiation of the dye solution under visible or ultraviolet light in the presence of semiconductor metal-oxide photo catalysts. In catalytic wet oxidation, various metal-based catalysts in supported or unsupported form can be used as heterogeneous catalysts for degradation of dyes in the presence of oxygen or hydrogen peroxide. These processes have several preferences like easy separation of the catalyst from reaction mixture and recycling of the catalyst.

show abstract

“…Studied the nano-composite of Au-TiO 2 for visible light activity. They also reported the Ag@m-TiO 2 nano-composite for high Photocatalyst and photo electro-chemical properties due to synergetic effect of surface plasmon resonance of Ag nano particle 11 . Porous TiO 2 films have previously been prepared through various techniques such as hydrothermal crystallization 12 , direct deposition 13, 14 , sputtering technology 15 , ultrasonic spray pyrolysis 16 , and sol-gel method 17 .…”

Section: Introductionmentioning

confidence: 95%

Marangoni effect induced macro porous surface films prepared through a facile sol-gel route

Khan

Wang

Yuan

et al. 2017

Sci Rep

View full text Add to dashboard Cite

Based on TiO2 as a model system, the sol-gel one step facile method is established to fabricate the macro-porous morphology films on the basis of Marangoni effect. In this proposed mechanism, the binary mixture of hydrophilic CuCl2 and lipophilic Ti-O network is used in sol to produce phase separation. A suitable evaporation rate in the gel film process leads to the macro-porous film due to Marangoni effect. It is observed that the macro-porous morphology of the film sustains during the annealing process, which suggests the creation of porous surface morphology in gel film stage rather than due to annealing. To analyze the preparation mechanism, the sol-gel process and microstructure of films are examined using TG-DTA, SEM, TEM, XRD, Raman, UV-Vis, XPS and FTIR. Furthermore, the optical-thermal properties are studied for the potential applications of such porous surface films as solar selective absorber.

show abstract

Silver nanoparticles and defect-induced visible light photocatalytic and photoelectrochemical performance of Ag@m-TiO2 nanocomposite

Cited by 131 publications

References 38 publications

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

Catalytic Degradation of Organic Dyes in Aqueous Medium

Marangoni effect induced macro porous surface films prepared through a facile sol-gel route

Contact Info

Product

Resources

About

Silver nanoparticles and defect-induced visible light photocatalytic and photoelectrochemical performance of Ag@m-TiO2 nanocomposite

Cited by 131 publications

References 38 publications

Photoelectroanalytical Sensor Based on TiO2 Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

Photoelectroanalytical Sensor Based on TiO2 Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

Catalytic Degradation of Organic Dyes in Aqueous Medium

Marangoni effect induced macro porous surface films prepared through a facile sol-gel route

Contact Info

Product

Resources

About

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation

Photoelectroanalytical Sensor Based on TiO₂ Nanoparticles/Copper Tetrasulfonated Phthalocyanine for Detection of Dopamine Exploiting Light Emitting Diode Irradiation