Untitled

Kitayama, Yoshie; Kodama, Tetsuya; Abe, Masahiro; Shimotsuma, H.; Matsuda, Yoshinori

doi:10.1023/a:1009637219763

Cited by 42 publications

(4 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Numerous articles have been reported to use semiconductor pillars to prepare new combined functional clays. The photocatalytic activities of the synthetic clay with semiconductor pillars, such as supported TiO 2 and Fe 2 O 3 , were much higher than those of unsupported catalysts [1][2][3]. But these pillared catalysts have low adsorption capability when it is applied to the treatment of trace organic pollutants in water.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of hydrophobic TiO2 pillared clay: The effect of acid hydrolysis catalyst and doped Pt amount on photocatalytic activity

Ding

et al. 2008

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of hydrophobic TiO2 pillared clay: The effect of acid hydrolysis catalyst and doped Pt amount on photocatalytic activity

Ding

et al. 2008

Journal of Colloid and Interface Science

View full text Add to dashboard Cite

“…Layered clays have been used to develop photoresponsive solids, in which the photocatalytic properties are derived from the incorporated guest. TiO 2 pillared montmorillonite synthesized by the impregnation method − showed a mesoporous structure and an increased specific surface area, which could adsorb and enrich organic compounds . In comparison, LDH have received less attention as materials to incorporate photocatalytic guests.…”

Section: Introductionmentioning

confidence: 99%

ZnO Nanoparticles Immobilized on Flaky Layered Double Hydroxides as Photocatalysts with Enhanced Adsorptivity for Removal of Acid Red G

Zhi

Li²,

Zhang³

et al. 2010

Langmuir

View full text Add to dashboard Cite

Flaky layered double hydroxides (FLDH) composed of cross-linked nanoflakes were prepared by the reconstruction of their oxides in alkali solution. The effect of reconstruction temperatures on the physicochemical properties was investigated. FLDH with a specific surface area of as high as 217 m(2)/g was obtained at a reconstruction temperature of 6 °C, and its derived flaky mixed metal oxides (FMMO) had a specific surface area of 249 m(2)/g. The ZnO nanoparticles were homogeneously deposited on the surface of the FLDH by coprecipitation. After calcination at 500 °C for 2 h, the ZnO-coated FLDH was transformed into ZnO-coated flaky mixed metal oxides (FMMO). The powders were characterized by X-ray diffraction, field-emission scanning electron microscopy, transmission electron microscope, N(2) adsorption-desorption isotherm, UV-vis diffuse reflectance spectroscopy, and Fourier transform infrared spectroscopy. In the presence of FLDH as a support, the ZnO nanoparticles were of about 10 nm in size and showed higher photocatalytic decomposition of acid red G than bare ZnO powder prepared under similar experimental conditions. It should be noted that the ZnO-coated FMMO combined excellent adsorption with photocatalytic activity. The flaky structure of mixed metal oxides appears to play important roles in the adsorption and photodecomposition process.

show abstract

“…Kitayama et al reported the largest surface area of the samples modified with titanium isopropoxide, which was approximately 404 m 2 /g. However, due to the relatively high porosity of the raw bentonite (saponite) in this case (152 m 2 /g), the increasing proportion of S BET after pillaring was only 166% [38]. The pillaring method presented in the present paper increased the specific surface area to about 273%.…”

Section: Effects Of Operating Parameters and Optimizationmentioning

confidence: 62%

Titanium-Pillared Clay: Preparation Optimization, Characterization, and Artificial Neural Network Modeling

et al. 2022

View full text Add to dashboard Cite

Titanium-pillared clay (Ti-PILC), as one of the most suitable types of porous adsorbents/(photo)catalysts, was prepared from a local type of Iranian clay and titanium isopropoxide. The production process was optimized by changing three operating parameters, including the clay suspension concentration (in the range of 0.5–10% w/v), the H+/Ti ratio (2–8 mol/mol), and the calcination temperature (300–700 °C). The largest specific surface area for the Ti-PILC was about 164 m2/g under the clay suspension of 0.5% w/v, H+/Ti = 6, with a surface area 273% larger than that of the raw clay. The surface areas obtained from more concentrated clay suspensions were, however, comparable (159 m2/g for 3% w/v clay and H+/Ti = 4). An increase in the calcination temperature has a negative effect on the porous texture of Ti-PILC, but based on modeling with artificial neural networks, its contribution was only 7%. Clay suspension and H+/Ti ratio play a role of 56 and 37% of the specific surface area. The presence of rutile phase, and in some cases anatase phase of TiO2 crystals was detected. FTIR and SEM investigations of Ti-PILCs produced under different operating parameters were analyzed.

show abstract

Untitled

Cited by 42 publications

References 13 publications

Preparation and characterization of hydrophobic TiO2 pillared clay: The effect of acid hydrolysis catalyst and doped Pt amount on photocatalytic activity

Preparation and characterization of hydrophobic TiO2 pillared clay: The effect of acid hydrolysis catalyst and doped Pt amount on photocatalytic activity

ZnO Nanoparticles Immobilized on Flaky Layered Double Hydroxides as Photocatalysts with Enhanced Adsorptivity for Removal of Acid Red G

Titanium-Pillared Clay: Preparation Optimization, Characterization, and Artificial Neural Network Modeling

Contact Info

Product

Resources

About