Large-surface mesoporous TiO2 nanoparticles: Synthesis, growth and photocatalytic performance

Yang, Xiaohong; Fu, Haitao; Yu, Aibing; Jiang, Xuchuan

doi:10.1016/j.jcis.2012.06.080

Cited by 61 publications

(37 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Figure 5 presents the UV-vis spectra of the AuxAg(1−x)/TiO2 (x is the amount of Au in the Ag-Au binary nanoparticles, where x = 0, 0.2, 0.4, 0.6, 0.8 and 1) and the pure TiO2. The adsorption peak of TiO2 is located at ~310 nm, which is consistent with our previous study [42]. The absorption peak moves to a longer wavelength by ~80 to 390 nm after decorating Ag nanoparticles (x = 0), and where the amount of Ag loaded is ~2.25 wt.…”

Section: Optical Propertiessupporting

confidence: 91%

See 1 more Smart Citation

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

et al. 2020

Self Cite

View full text Add to dashboard Cite

Exploring solar-excited heterogeneous photocatalysts by taking advantage of surface plasmon resonance (SPR) has drawn growing research attention. As it could help to pave the way for global sustainable development. The decoration of TiO2 particles with noble metals possessing SPR effects is regarded as one of the most effective solutions. The perfect match of the SPR absorption band with the spectrum of incident light is an essential factor for plasmonic enhancement. However, modifying with sole noble metal is often limited as it tunes wavelength of only several nanometers. To overcome this drawback, an alternative approach can be offered by decoration with more than one noble metal. For instance, Au-Ag co-decoration displays greatly adjustable, composition-dependent SPR agent over a broad range of the visible light spectrum (ca. from 415 to 525 nm). Hence Au-Ag complex is a remarkable candidate for tuning the photo adsorption of TiO2 from UV to visible light. This study presents a novel and tailored method for the fabrication of Au-Ag co-modified TiO2 particles, and how Au-Ag dependent SPR was applied as the visible light-responsive TiO2 based photocatalysts in a simple but reliable way. The fabricated Au-Ag co-decorated TiO2 (AuxAg(1−x)/TiO2) was characterized and proved to own excellent stability and large specific surface area. The optimization of these particles against the wavelength of maximal solar light intensity was confirmed by photo degradation of methylene blue under visible light radiation. This work may provide further insight into the design of TiO2-based composites with improved photocatalytic properties for environmental remediation and renewable energy utilization.

show abstract

Section: Optical Propertiessupporting

confidence: 91%

“…According to the Brumauer-Emmett-Teller formula, the specific surface area of the composite was calculated as~156.6 m 2 /g. This value is about double that measured when the pure TiO 2 spheres were tested (81.8 m 2 /g) [42]. This is probably due to a spillover effect [43,44].…”

Section: Specific Surface Area Testmentioning

confidence: 57%

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

et al. 2020

Self Cite

View full text Add to dashboard Cite

show abstract

“…The corresponding SAED pattern (seen as inset in Fig. 4(a)) has also established the crystalline nature of porous TSP AG2 , which accords well with the XRD results [33,34].…”

Section: Characterizationsupporting

confidence: 83%

Synthesis and characterization of guar-alginate hybrid bead templated mercury sorbing titania spheres

Singh¹,

Preeti²,

Singh³

et al. 2015

International Journal of Biological Macromolecules

View full text Add to dashboard Cite

“…The use of wide band gap semiconductor especially titania as photocatalyst is of attraction because of its low cost and non‐toxic nature. Among many factors that influence the photodegradation efficiency of TiO 2 , the main focus is the physical properties of TiO 2 , which include crystalline phases, crystallinity, particle size, surface area, porosity and morphology . It is generally accepted that anatase phase is much more photoactive than the rutile phase .…”

Section: Introductionmentioning

confidence: 99%

“…Among many factors that influence the photodegradation efficiency of TiO 2 , the main focus is the physical properties of TiO 2 , which include crystalline phases, crystallinity, particle size, surface area, porosity and morphology. [6][7][8][9][10][11] It is generally accepted that anatase phase is much more photoactive than the rutile phase. [12][13][14][15] The sol-gel method is proved to be a convenient synthetic method for the preparation of TiO 2 nano powders of tailored morphological features.…”

Section: Introductionmentioning

confidence: 99%

Dicarboxylic Acids as Soft Templates for the Sol‐Gel Synthesis of Mesoporous Nano TiO₂ with Enhanced Photocatalytic Activity

Bakre

Tilve

2017

ChemistrySelect

View full text Add to dashboard Cite

In this study we have synthesized TiO2 nanoparticles by sol‐gel method utilizing different dicarboxylic acid modifiers viz. oxalic acid, malonic acid, succinic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, malic acid and tartaric acid and compared their properties. The synthesized particles were characterized by Fourier transform infra red spectroscopy (FTIR), ultraviolet diffuse reflectance spectroscopy (UV‐DRS), X‐ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), selected area electron diffraction (SAED), energy dispersive X‐ray (EDX) and Brunauer‐Emmett‐Teller (BET) surface area measurement. The results indicate that the phase purity of the particles depend on the nature of precursor dicarboxylic acid. The synthesized samples were compared with Degussa P25 for photocatalytic activity by direct sunlight degradation of methylene blue. Samples prepared from malonic and glutaric acid precursors were found to show better photocatalytic activity than the P25 and were found to have maximum mesoporosity, smaller size and exclusive anatase phase.

show abstract

Large-surface mesoporous TiO2 nanoparticles: Synthesis, growth and photocatalytic performance

Cited by 61 publications

References 39 publications

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

Synthesis and characterization of guar-alginate hybrid bead templated mercury sorbing titania spheres

Dicarboxylic Acids as Soft Templates for the Sol‐Gel Synthesis of Mesoporous Nano TiO₂ with Enhanced Photocatalytic Activity

Contact Info

Product

Resources

About

Large-surface mesoporous TiO2 nanoparticles: Synthesis, growth and photocatalytic performance

Cited by 61 publications

References 39 publications

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

The Use of Tunable Optical Absorption Plasmonic Au and Ag Decorated TiO2 Structures as Efficient Visible Light Photocatalysts

Synthesis and characterization of guar-alginate hybrid bead templated mercury sorbing titania spheres

Dicarboxylic Acids as Soft Templates for the Sol‐Gel Synthesis of Mesoporous Nano TiO2 with Enhanced Photocatalytic Activity

Contact Info

Product

Resources

About

Dicarboxylic Acids as Soft Templates for the Sol‐Gel Synthesis of Mesoporous Nano TiO₂ with Enhanced Photocatalytic Activity