Influence of metallic silver and of platinum-silver bimetallic deposits on the photocatalytic activity of titania (anatase and rutile) in organic and aqueous media

Sclafani, A.; Herrmann, Jean-Marie

doi:10.1016/s1010-6030(97)00319-5

Cited by 316 publications

(70 citation statements)

References 35 publications

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“…7 There are many methods for synthesizing metal nanoparticles, including photo reduction, 8 laser ablation, 9 chemical reduction in aqueous media with different polymer surfactants, 10,11 reduction of chemicals in soft matrices, [12][13][14] reduction of chemicals in solid matrices (eg, mesoporous silicate), 15 and chemical vapor deposition. 16 Silver nanoparticles (Ag-NPs) are widely used as catalysts, [17][18][19] photo-catalysts, [20][21][22] and in surface-enhanced Raman spectroscopy [24][25][26] as well as chemical analysis. …”

Section: Introductionmentioning

confidence: 99%

Time-dependent effect in green synthesis of silver nanoparticles

Darroudi

Ahmad²,

Zamiri³

et al. 2011

IJN

137

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The application of “green” chemistry rules to nanoscience and nanotechnology is very important in the preparation of various nanomaterials. In this work, we successfully developed an eco-friendly chemistry method for preparing silver nanoparticles (Ag-NPs) in natural polymeric media. The colloidal Ag-NPs were synthesized in an aqueous solution using silver nitrate, gelatin, and glucose as a silver precursor, stabilizer, and reducing agent, respectively. The properties of synthesized colloidal Ag-NPs were studied at different reaction times. The ultraviolet-visible (UV-vis) spectra were in excellent agreement with the obtained nanostructure studies performed by transmission electron microscopy (TEM) and their size distributions. The prepared samples were also characterized by X-ray diffraction (XRD) and atomic force microscopy (AFM). The use of eco-friendly reagents, such as gelatin and glucose, provides green and economic attributes to this work.

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Section: Introductionmentioning

confidence: 99%

Time-dependent effect in green synthesis of silver nanoparticles

Darroudi

Ahmad²,

Zamiri³

et al. 2011

IJN

137

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“…Controlling the structural parameters of Ag is of particular importance which determines the efficiency and physicochemical properties of the resultant photocatalysts. For instance, photoreduction method has already been conventionally used by several research groups [21,22]. However, it is found that the photocatalytic activity of Ag/TiO 2 could not be obviously enhanced compared to that of TiO 2 .…”

Section: Introductionmentioning

confidence: 99%

Continuous Synthesis of Ag/TiO₂ Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation

Zhou

Lin

Zong

et al. 2017

Journal of Nanomaterials

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A facile and environmental friendly synthesis strategy based on pulsed laser ablation has been developed for potential mass production of Ag-loaded TiO 2 (Ag/TiO 2 ) nanoparticles. By sequentially irradiating titanium and silver target substrates, respectively, with the same 1064 nm 100 ns fiber laser, Ag/TiO 2 particles can be fabricated. A postannealing process leads to the crystallization of TiO 2 to anatase phase with high photocatalytic activity. The phase composition, microstructure, and surface state of the elaborated Ag/TiO 2 are characterized by X-ray diffraction (XRD), energy dispersive X-ray (EDX), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), and X-ray photoelectron spectroscopy (XPS) techniques. The results suggest that the presence of silver clusters deposited on the surface of TiO 2 nanoparticles. The nanostructure is formed through laser interaction with materials. Photocatalytic activity evaluation shows that silver clusters could significantly enhance the photocatalytic activity of TiO 2 in degradation of methylene blue (MB) under UV light irradiation, which is attributed to the efficient electron traps by Ag clusters. Our developed Ag/TiO 2 nanoparticles synthesized via a straightforward, continuous, and green pathway could have great potential applications in photocatalysis.

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“…Some amazing properties of metals are used in order to improve the photocatalytic activities of semiconductors, such as TiO 2 and SiO 2 , which are among the most efficient ones, resulting in better photocatalytic properties, even under visible rays [5]. Some noble metals, such as Ag [6], Au [7] and Pd [8] have stood the test of time in the field of producing nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Inhibition of corrosion of mild steel in well water by TiO2 nanoparticles and an aqueous extract of May flower

Nithyadevi¹,

Bama²,

Rathish³

et al. 2016

Nanosystems: Phys. Chem. Math.

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Titanium dioxide nanoparticles have been used to control corrosion of mild steel in well water in the absence and presence of an aqueous May flower extract. As the concentration of TiO 2 increases, the inhibition efficiency also increases. 100 ppm of TiO 2 offers 84 % inhibition efficiency. The addition of 10mlof May flower extract enhances the inhibition efficiency to 95 %. Adsorption of TiO 2 on the metal surface follows Langmuir adsorption isotherm. Polarization study reveals that the flower extract-TiO 2 system functions as mixed type of inhibitor, controlling both anodic and cathodic reactions. AC impedance spectra reveal the formation of a protective film on the metal surface. This technology may find application in cooling water systems and concrete technology.

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Influence of metallic silver and of platinum-silver bimetallic deposits on the photocatalytic activity of titania (anatase and rutile) in organic and aqueous media

Cited by 316 publications

References 35 publications

Time-dependent effect in green synthesis of silver nanoparticles

Time-dependent effect in green synthesis of silver nanoparticles

Continuous Synthesis of Ag/TiO₂ Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation

Inhibition of corrosion of mild steel in well water by TiO2 nanoparticles and an aqueous extract of May flower

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Influence of metallic silver and of platinum-silver bimetallic deposits on the photocatalytic activity of titania (anatase and rutile) in organic and aqueous media

Cited by 316 publications

References 35 publications

Time-dependent effect in green synthesis of silver nanoparticles

Time-dependent effect in green synthesis of silver nanoparticles

Continuous Synthesis of Ag/TiO2 Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation

Inhibition of corrosion of mild steel in well water by TiO2 nanoparticles and an aqueous extract of May flower

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Product

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Continuous Synthesis of Ag/TiO₂ Nanoparticles with Enhanced Photocatalytic Activity by Pulsed Laser Ablation