The Effect of Silane Addition on Chitosan-Fly Ash/CTAB as Electrolyte Membrane

Kusumastuti, Ella; Isnaeni, Diana; Sulistyaningsih, Triastuti; Mahatmanti, F. Widhi; Jumaeri,; Atmaja, Lukman; Widiastuti, Nurul

doi:10.1088/1757-899x/172/1/012016

Cited by 3 publications

(2 citation statements)

References 7 publications

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“…In the context of application of BFA for capturing of CO 2 , attempts have been made to introduce amine groups by the simple wet impregnation method. , The wet impregnation method is a convenient way of introducing certain functional groups in ash residues; however, the application of materials developed through this method is limited to capturing of gaseous pollutants. Surface chemical properties of materials can be conveniently and robustly controlled by anchoring appropriate organosilanes on their surface, a process designated as silanization. − In some studies, organosilanes have been applied to modify the surface chemical nature of coal fly ash for their better integration as fillers in composite materials. − However, to the best of our knowledge, no attempts have been made to apply the process of silanization for imparting specific functional group on the surface of BFA and apply them for remediation of dye-contaminated aqueous solutions. Herein, we report a convenient silanization method for anchoring amine groups on the surface of BFA by using 3-aminopropyltriethoxysilane (APTES).…”

Section: Introductionmentioning

confidence: 99%

Utilization of Biomass Fly Ash for Improving Quality of Organic Dye-Contaminated Water

et al. 2020

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Development of innovative methodologies to convert biomass ash into useful materials is essential to sustain the growing use of biomass for energy production. Herein, a simple chemical modification approach is employed to functionalize biomass fly ash (BFA) with 3-aminopropyltriethoxy silane (APTES) to develop an inexpensive and efficient adsorbent for water remediation. The amine-functionalized BFA (BFA−APTES) was fully characterized by employing a range of characterization techniques. Adsorption behavior of BFA−APTES was evaluated against two anionic dyes, namely, alizarin red S (ARS) and bromothymol blue (BTB). In the course of experimental data analysis, the computation tools of data fitting for linear and nonlinear form of Langmuir, Freundlich, and the modified Langmuir−Freundlich adsorption isotherms were used with the aid of Matlab R2019b. In order to highlight the misuse of linearization of adsorption models, the sum of the squares of residues (SSE) values obtained from nonlinear models are compared with R 2 values obtained from the linear regression. The accuracy of the data fitting was checked by the use of SSE as an error function instead of the coefficient of determination, R 2 . The dye adsorption capacity of BFA−APTES was also compared with the nonfunctionalized BFA. The maximum adsorption capacities of BFA−APTES for ARS and BTB dye molecules were calculated to be around 13.42 and 15.44 mg/g, respectively. This value is approximately 2−3 times higher than the pristine BFA. A reasonable agreement between the calculated and experimental values of q e obtained from the nonlinear form of kinetic models verified the importance of using equations in their original form. The experimentally calculated thermodynamic parameters including molar standard Gibbs free energy (Δ ad G m 0 ) and molar standard enthalpy change (Δ ad H m 0 ) reflected that the process of adsorption of dye molecules on the BFA−APTES adsorbent was spontaneous and exothermic in nature. Moreover, the used BFA−APTES adsorbent could be regenerated and reused for several cycles with significant dye adsorption capacity. The remediation capability of the BFA− APTES adsorbent against ARS dye was also demonstrated by packing a small column filled with the BFA−APTES adsorbent and passing a solution of ARS through it. Overall, we provide a simple and scalable route to convert BFA into an efficient adsorbent for water remediation applications.

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Section: Introductionmentioning

confidence: 99%

Utilization of Biomass Fly Ash for Improving Quality of Organic Dye-Contaminated Water

et al. 2020

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“…4) Dry processing techniques had also been used such as evaporating silane solution in vacuum. 5,6) There are several research groups that have studied the effects of function group of silane coupling toward adhesion level, 7,8) anticorrosion, [9][10][11][12] biosensor [13][14][15] and immusensor. 16,17) Guoxin and Kongyou 18) studied the effects of function group in silane coupling toward nucleation, crystallization and growth of calcium phosphate on titanium surface.…”

Section: Introductionmentioning

confidence: 99%

Effect of amino-, mercapto-silane coupling as a molecular bridge of polyvinyl chloride ion-selective membrane on silicon nitride for nitrate ISFET sensors

Chaisriratanakul

Bunjongpru

Pankiew

et al. 2020

Jpn. J. Appl. Phys.

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This paper presents a modification of a Si 3 N 4 Polyvinyl chloride (PVC) membrane on a surface of an ion selective field effect transistor (ISFET) using silane with two different functional groups for comparison of nitrate sensing characteristics. Effects of amino (NH 2 ) and thiol groups (SH) toward structures and characteristics of nitrate sensors were analyzed using the following techniques: ellipsometry, scanning electron microscope (SEM), infrared spectroscopy (FTIR), zeta potential and electrochemical impedance spectroscopy (EIS). After surface modification, the thickness of the silane layers for both cases were similar with uniform surface topology. Absolute zeta potentials of PVC ion-selective membrane (7.65 mV) and Si 3 N 4 surface modification with MPTMS (−51.46 mV) reflected the surface functional group and showed that membranes could be bonded to the PVC ion-selective membrane. Since APTMS produced higher EIS than MPTMS, the resulting nitrate sensors modified by MPTMS had higher sensitivity than the sensors with APTMS. Finally, the modified sensors had a useful life time of 3 months.

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Artocarpus odoratissimus leaf-based cellulose as adsorbent for removal of methyl violet and crystal violet dyes from aqueous solution

2018

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The Effect of Silane Addition on Chitosan-Fly Ash/CTAB as Electrolyte Membrane

Cited by 3 publications

References 7 publications

Utilization of Biomass Fly Ash for Improving Quality of Organic Dye-Contaminated Water

Utilization of Biomass Fly Ash for Improving Quality of Organic Dye-Contaminated Water

Effect of amino-, mercapto-silane coupling as a molecular bridge of polyvinyl chloride ion-selective membrane on silicon nitride for nitrate ISFET sensors

Artocarpus odoratissimus leaf-based cellulose as adsorbent for removal of methyl violet and crystal violet dyes from aqueous solution

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