Sol-gel hydrothermal synthesis of nano crystalline silicotitanate and its strontium and cesium adsorption

Wang, Rong; Luo, Zhenggang; Tan, Qiuxia; Wang, Rui; Chen, Shuyuan; Shu, Jiancheng; Chen, Mengjun; Xiao, Zhongmin

doi:10.1007/s11356-019-06907-z

Cited by 12 publications

(2 citation statements)

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“…X-ray diffraction profiles were carried out to characterize the phase structure of pure chitosan, silicotitanate with different molar ratios (S1, S2, S3), and Si-Ti(S2) crosslinked with chitosan (CHMix), as presented in Figure 2. The figure shows four main crystalline peaks for S1, S2, and S3 at 2θ equal to 12.19 • , 28.22 • , 32.31 • , and 47.9 • , which correspond to (100), (113), (300), and (606) of silicotitanate (JCPDS 47-0591) [63]. The intensity of the strongest peaks at 28.22 • and 47.9 • increase with the increasing titanium molar ratio, and indicate that titanate is in the anatase phase according to card number 21-1272 [63].…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

“…The figure shows four main crystalline peaks for S1, S2, and S3 at 2θ equal to 12.19 • , 28.22 • , 32.31 • , and 47.9 • , which correspond to (100), (113), (300), and (606) of silicotitanate (JCPDS 47-0591) [63]. The intensity of the strongest peaks at 28.22 • and 47.9 • increase with the increasing titanium molar ratio, and indicate that titanate is in the anatase phase according to card number 21-1272 [63]. An XRD of pure chitosan revealed strong peaks at 2θ around 17.7 • (broad), indicating that chitosan exist as an anhydrous crystalline phase [64,65].…”

Section: X-ray Diffraction Analysismentioning

confidence: 99%

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Synthesis of a Novel Photocatalyst Based on Silicotitanate Nanoparticles for the Removal of Some Organic Matter from Polluted Water

et al. 2023

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The use of waste from various agricultural sectors has recently drawn increased interest from the scientific, technological, ecological, economic, and social fields. As such, in this study, a novel production of an affordable and environmentally friendly photocatalyst of silicotitanate (S1, S2, and S3) made from silica solution (extracted from rice husk ash) and various molar ratios of titanium (IV) 2-ethylhexyl-oxide is reported. Following that, chitosan/silicotitanate (CHMix) nanocomposite material was created through a crosslinking reaction between chitosan and fabricated silicotitanate (S2). Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM-EDX), as well as N2 adsorption-desorption isotherm and zeta potential measurements were used to characterize each of the fabricated samples. Additionally, in comparison to neat chitosan, the newly fabricated material’s (CHMix) photocatalytic reactivity was investigated using two synthetic anionic dyes, reactive blue and Congo red, with decolorization rates of up to 95.76% and 99.9%, respectively. The decolorization results showed that CHMix is the most efficient photocatalyst for the degradation of reactive blue and Congo red. Reactive blue and Congo red’s molecular structures were almost completely broken when equilibrium was reached using sunlight, and the decolorization rate for both dyes was close to 100%. As a result, the combination of chitosan and silicotitanate, or CHMix, has an effective photocatalytic capability for dye degradation in both natural and concentrated sunlight.

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Section: X-ray Diffraction Analysismentioning

confidence: 99%