Preparation of poly(4-aminodiphenylamine)/silver nanoparticles composite and catalysis

Thanjam, I. Starlet; Philips, M. Francklin; Lee, Yi–Chia

doi:10.1007/s10854-011-0496-5

Cited by 3 publications

(2 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In order to solve this problem, an effective method is to encapsulate or embed the AgNPs into a supporting matrix. The loading of AgNPs on different substrates has been reported, for instance, SiO 2 [23], TiO 2 [24], Al 2 O 3 [25], porous carbon [26], carbonaceous matrix [27], carboxymethyl chitosan [28], zeolite [29], cellulose [30], ZnO paper [31] and polymers such as PVP [32–34]. In the catalytic process, porous organic polymers with a high SSA, low framework density and permanent porosity represent a new type of catalyst support [35–37].…”

Section: Introductionmentioning

confidence: 99%

Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic reduction

Yin¹,

Chen²,

Lu³

et al. 2017

Beilstein J. Org. Chem.

View full text Add to dashboard Cite

Porous hypercross-linked polymers based on perbenzylated monosugars (SugPOP-1–3) have been synthesized by Friedel–Crafts reaction using formaldehyde dimethyl acetal as an external cross-linker. Three perbenzylated monosugars with similar chemical structure were used as monomers in order to tune the porosity. These obtained polymers exhibit microporous and mesoporous features. The highest Brunauer–Emmett–Teller specific surface area for the resulting polymers was found to be 1220 m2 g−1, and the related carbon dioxide storage capacity was found to be 14.4 wt % at 1.0 bar and 273 K. As the prepared porous polymer SugPOP-1 is based on hemiacetal glucose, Ag nanoparticles (AgNPs) can be successfully incorporated into the polymer by an in situ chemical reduction of freshly prepared Tollens’ reagent. The obtained AgNPs/SugPOP-1 composite demonstrates good catalytic activity in the reduction of 4-nitrophenol (4-NP) with an activity factor k a = 51.4 s−1 g−1, which is higher than some reported AgNP-containing composite materials.

show abstract

Section: Introductionmentioning

confidence: 99%

Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic reduction

Yin¹,

Chen²,

Lu³

et al. 2017

Beilstein J. Org. Chem.

View full text Add to dashboard Cite

show abstract

“…The incorporation of an inorganic component into a polymer matrix results in a hybrid material which exhibits better specific properties than both organic matrix and inorganic material by separate (Xu et al, 2009;Pérez-Escobedo et al, 2016). These materials can be used in attractive applications such as catalysis (Hasik et al,2009;Starlet et al, 2012), biomaterials (Wei et al, 2007;Vallés-Lluch et al, 2010), sensors (Kang et al, (2010); Zeng et al, 2007), coatings (Torrey et al, 2008;Armstrong et al 2012), and membranes (Jomekian et al, 2011;Sadeghi et al, 2011). For instance, the use of polymericinorganic composites has been successfully employed to enhance the performance of membranes for gas separation (Lua et al, 2013;Khosravi et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

Effect of Silica Source on the Synthesis and Properties of Polysulfone/Silica Composite Membranes for Gas Separation

Castruita¹

2018

Rev. Mex. Ing. Quim.

View full text Add to dashboard Cite

This work reports the synthesis in-situ of silica particles inside a polysulfone matrix by the sol-gel method in acidic medium using different polymerization inorganic precursors: tetraethylorthosilicate (TEOS), 3-aminopropyltriethoxysilane (APTES) and mixture of them. The effect of the type of inorganic precursor on the formation of silica particles was studied. Composite membranes were prepared by casting technique from these organic-inorganic materials. These membranes were characterized by X-ray diffraction (XRD), infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The morphology, particle size and particle-polymer interaction were studied by scanning electron microscopy (SEM). Additionally, a semi-quantitative chemical analysis by energy dispersive X-ray spectroscopy (EDX) showed the chemical composition of the composite membranes. Type and concentration of silica precursor affected the morphology, particle size and distribution of silica in the composite membranes. Composite membranes without interfacial voids were obtained from APTES at 25 wt%. Initial studies about the gas separation properties of CO 2 /CH 4 gas mixture revealed an improvement on the CO 2 permeability of composite membrane comprising silica particles synthesized from APTES in comparison with the polymeric membrane. Keywords: silica, sol-gel, polysulfone, composite membrane, gas separation. ResumenEn este trabajo se reporta la síntesis in-situ de partículas de sílice dentro de una matriz de polisulfona mediante el método sol-gel en medio ácido usando diferentes precursores inorgánicos de polimerización: tetraetilortosilicato (TEOS), 3-aminopropiltrietoxisilano (APTES) y mezcla de ambos. Se estudió el efecto del tipo de precursor inorgánico en la formación de las partículas de sílice. Las membranas compuestas se prepararon por evaporación del disolvente a partir de los materiales orgánico-inorgánico. Estas membranas se caracterizaron por difracción de rayos X (XRD), espectroscopía de infrarrojo (FTIR), calorimetría diferencial de barrido (DSC) y análisis termogravimétrico (TGA). La morfología, tamaño de partícula y la interacción partícula-polímero se estudiaron por microscopia electrónica de barrido (SEM). Adicionalmente, el análisis químico semicuantitativo mediante espectroscopía de energía dispersiva de rayos X (EDX) mostró la composición química de las membranas compuestas. El tipo y la concentración del precursor de la sílice afectaron la morfología, el tamaño de partícula y la distribución de la sílice en las membranas compuestas. Las membranas compuestas que fueron obtenidas a partir de APTES al 25% no mostraron huecos interfaciales. Estudios iniciales de las propiedades de separación de una mezcla CO 2 /CH 4 revelaron el mejoramiento de la permeabilidad de CO 2 de las membranas compuestas que contienen partículas de sílice sintetizadas a partir de APTES en comparación con la membrana polimérica.

show abstract

Size-controlled synthesis of highly dispersed silver particles

Chen

Xiao

et al. 2012

J Mater Sci: Mater Electron

View full text Add to dashboard Cite

Preparation of poly(4-aminodiphenylamine)/silver nanoparticles composite and catalysis

Cited by 3 publications

References 20 publications

Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic reduction

Sugar-based micro/mesoporous hypercross-linked polymers with in situ embedded silver nanoparticles for catalytic reduction

Effect of Silica Source on the Synthesis and Properties of Polysulfone/Silica Composite Membranes for Gas Separation

Size-controlled synthesis of highly dispersed silver particles

Contact Info

Product

Resources

About