Effect of aluminum modified mesoporous SBA-15 on surface properties and arsenic adsorption performance

Liu, Xueqing; Liu, Nengsheng; Li, Xiang; Luo, Yongming; Li, Xiaoying; Hu, Bo; He, Xin‐Tao; Li, Chengwei; He, Shan

doi:10.1007/s10934-022-01328-9

Cited by 11 publications

(6 citation statements)

References 53 publications

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“…Then, TEOS was added, and the stirring speed was increased up to 700 rpm for 3 h. The mixture then was heated in the oven at 80 °C for 24 h, which is a hydrothermal process. The precipitate that formed was filtered using filter paper, rinsed using distilled water, and then dried at 50 °C for approximately 14 h. The last step was to remove the surfactant via a calcination process at 550 °C for 4 h; then, SBA-15 mesoporous powder was obtained (Yu et al, 2001;Liu et al, 2023)…”

Section: Preparation Of Mesoporous Silica Sba-15mentioning

confidence: 99%

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Fitriani,

Azzahra,

Jessica

et al. 2024

Sci. Technol. Indones

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Usnic acid, a secondary metabolite of lichen Usnea sp., has several pharmacological activities, but it is poorly soluble in water. This study aimed to improve the solubility and dissolution rate of usnic acid loaded in mesoporous silica SBA-15 at a mass ratio of 1:1. and evaluate its physical stability. Physicochemical characterization was carried out via the nitrogen adsorption desorption isotherm, differential scanning calorimetry (DSC), Fourier transform infrared (FTIR) spectroscopy, and powder X-ray diffraction (PXRD). Usnic acid-loaded SBA-15 was stored at 40 °C with various relative humidities (RH) and then analyzed by PXRD for the physical stability. Usnic acid adsorbed well in the pores of SBA-15, as shown by a decrease in the volume pore and surface area of SBA-15 according to the nitrogen adsorption. Moreover, usnic acid-SBA-15 showed a decrease in the degree of crystallinity according to PXRD analysis and no melting point based on DSC analysis. The FTIR spectrum of usnic acid–SBA-15 corresponds to the spectra of each raw material. The solubility of usnic acid increased 5.15 times after adsorbed on SBA-15. The dissolution rate also showed a significant increase (p < 0.05) from 19.51% to 84.27%. Usnic acid–SBA-15 was relatively stable at RH 75%. Thus, the adsorption of usnic acid on SBA-15 can increase its solubility, dissolution rate, and physical stability.

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Section: Preparation Of Mesoporous Silica Sba-15mentioning

confidence: 99%

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Fitriani,

Azzahra,

Jessica

et al. 2024

Sci. Technol. Indones

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“…Therefore, aluminum can be loaded onto the SBA-15 material to improve the arsenic removal efficiency . In our previous studies, , Al-SBA-15 had also been confirmed to be efficient adsorbents for arsenate, and the effects of aluminum loading and adsorption behavior were fully studied. Moreover, we found that aluminum oxides with different coordination environments were produced after the incorporation of aluminum onto SBA-15, and these aluminum oxides made a large number of Lewis or Brønsted acid sites, effectively increasing the number of active adsorption centers.…”

Section: Introductionmentioning

confidence: 99%

Surface Properties and Microstructures of Al-SBA-15 under Different Temperature Calcinations in Relation to Adsorption Performance

Liu

et al. 2023

J. Phys. Chem. C

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In this study, the calcination temperature was adjusted to influence the properties, including surface alumina types, microstructure, and surface acidity, and then to explore their association with the performance of As(V) adsorption after preparing aluminum-modified SBA-15 (Al-SBA-15 x ) by the incipient wetness impregnation method. The results showed that calcination promoted the formation of aluminum oxides with different coordination environments on SBA-15 carriers, resulting in different kinds of acid sites and Al−OH groups, which were the adsorption sites for As(V). However, with the increase in the calcination temperature, the total surface acidity on the Al-SBA-15 x samples gradually decreased, and the dehydration and dehydroxylation reactions of aluminum oxides occurred, which reduced the Al−OH groups and changed the acid−base environment on the samples. Besides, high-temperature calcination caused a partial collapse of mesoporous channels, which was not conducive to dispersing the active adsorption centers on the surface and further reduced the effective utilization of active adsorption centers. Therefore, the adsorption capacity of an Al-SBA-15 x adsorbent for As(V) decreased with the increase of the calcination temperature. Furthermore, kinetic models were used to investigate the relationship between the microstructure and adsorption processes. Finally, recycling tests were performed to demonstrate the reusability of Al-SBA-15 x samples.

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“…Carbon‐based electrodes are widely used in electrochemical sensing because of their low cost, long‐term stability, and good biocompatibility. [ 30–34 ] Considering the trace amount of analytes in complex biofluids other than blood, [ 1 ] it is still urgent to improve the sensitivity and the detection limit of electrochemical sensors for practical applications. Different strategies such as exploiting nanomaterials with high specific surface areas and introducing chemical modifications have been attempted to address these challenges.…”

Section: Introductionmentioning

confidence: 99%

Highly Sensitive Wearable Sensor Based on (001)‐Orientated TiO₂ for Real‐Time Electrochemical Detection of Dopamine, Tyrosine, and Paracetamol

Zhang,

Zhu,

Xie

et al. 2024

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The concentration of dopamine (DA) and tyrosine (Tyr) reflects the condition of patients with Parkinson's disease, whereas moderate paracetamol (PA) can help relieve their pain. Therefore, real‐time measurements of these bioanalytes have important clinical implications for patients with Parkinson's disease. However, previous sensors suffer from either limited sensitivity or complex fabrication and integration processes. This work introduces a simple and cost‐effective method to prepare high‐quality, flexible titanium dioxide (TiO2) thin films with highly reactive (001)‐facets. The as‐fabricated TiO2 film supported by a carbon cloth electrode (i.e., TiO2–CC) allows excellent electrochemical specificity and sensitivity to DA (1.390 µA µM−1 cm−2), Tyr (0.126 µA µM−1 cm−2), and PA (0.0841 µA µM−1 cm−2). More importantly, accurate DA concentration in varied pH conditions can be obtained by decoupling them within a single differential pulse voltammetry measurement without additional sensing units. The TiO2–CC electrochemical sensor can be integrated into a smart diaper to detect the trace amount of DA or an integrated skin‐interfaced patch with microfluidic sampling and wireless transmission units for real‐time detection of the sweat Try and PA concentration. The wearable sensor based on TiO2–CC prepared by facile manufacturing methods holds great potential in the daily health monitoring and care of patients with neurological disorders.

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Effect of aluminum modified mesoporous SBA-15 on surface properties and arsenic adsorption performance

Cited by 11 publications

References 53 publications

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Surface Properties and Microstructures of Al-SBA-15 under Different Temperature Calcinations in Relation to Adsorption Performance

Highly Sensitive Wearable Sensor Based on (001)‐Orientated TiO₂ for Real‐Time Electrochemical Detection of Dopamine, Tyrosine, and Paracetamol

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Effect of aluminum modified mesoporous SBA-15 on surface properties and arsenic adsorption performance

Cited by 11 publications

References 53 publications

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Improvement of Solubility Usnic Acid Loaded on Mesoporous Silica SBA-15 and Physicochemical Characterization

Surface Properties and Microstructures of Al-SBA-15 under Different Temperature Calcinations in Relation to Adsorption Performance

Highly Sensitive Wearable Sensor Based on (001)‐Orientated TiO2 for Real‐Time Electrochemical Detection of Dopamine, Tyrosine, and Paracetamol

Contact Info

Product

Resources

About

Highly Sensitive Wearable Sensor Based on (001)‐Orientated TiO₂ for Real‐Time Electrochemical Detection of Dopamine, Tyrosine, and Paracetamol