2014
DOI: 10.1007/s10853-014-8615-3
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Synthesis and characterisation of nanostructured silica-powellite-HAP composites

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Cited by 13 publications
(12 citation statements)
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“…6). For all samples, the broad peak around 3450 cm -1 is characteristic to -OH vibration [45,46]. The most intense absorption band near 1080 cm -1 is assigned to O-Si-O asymmetric stretching vibrations in which adjacent O atoms move in phase with each other [47][48][49].…”
Section: Characterisation Of G Hirsutum Loaded Silicamentioning
confidence: 93%
See 1 more Smart Citation
“…6). For all samples, the broad peak around 3450 cm -1 is characteristic to -OH vibration [45,46]. The most intense absorption band near 1080 cm -1 is assigned to O-Si-O asymmetric stretching vibrations in which adjacent O atoms move in phase with each other [47][48][49].…”
Section: Characterisation Of G Hirsutum Loaded Silicamentioning
confidence: 93%
“…The band at about 1630 cm -1 is assigned to the deformation mode of water molecules, which are probably trapped inside the silica matrix. The bands located at about 450 and 800 cm -1 can be attributed to the Si-O-Si bending and Si-O-Si stretching vibrations, respectively [45,46,50,51]. The absorption band close to 950 cm -1 corresponds to stretching vibrations of silanol groups-Si-OH [48].…”
Section: Characterisation Of G Hirsutum Loaded Silicamentioning
confidence: 96%
“…A utilização de nanomateriais de óxidos metálicos ou hidróxidos, como adsorventes para a remoção de íons de metais pesados, tem atraído atenção nos últimos anos, pois esses materiais apresentam excelentes propriedades de adsorção, baixo custo, alta reatividade, alta área superficial, baixa solubilidade, facilidade na obtenção e mínimo impacto ambiental 11,13,[18][19][20] Dentro dessa classe de óxidos metálicos, os molibdatos nanoestruturados têm atraído interesse na pesquisa, devido às suas excelentes propriedades ópticas 28,29 , boa estabilidade química e estrutural 30 , além de possuírem excelentes aplicações práticas, industriais e de amplo potencial 31 . O CaMoO 4 é o mais importante molibdato metálico e possui aplicações promissoras em diferentes setores, como catalisadores, aplicações de micro-ondas, lâmpadas fluorescentes, fotoluminescência e nanopigmentos [32][33][34] . Diferentes rotas sintéticas têm sido utilizadas na obtenção desses molibdatos, dentre elas: o método sol-gel 35 , o hidrotermal 36 , a co-precipitação 37 , reação de estado sólido 38 , microemulsão 39 , deposição química 40 e radiação por micro-ondas 41 .…”
Section: Introductionunclassified
“…In addition, it's interesting luminescence properties which result of energy transfer from host lattice to the dopant ions (AMoO 4 (A = Ca, Sr, Ba)) [17][18] leading to its wide application in white light-emitting diodes, displays, and devices in photochemical fields [19][20][21][22] . On the other hand, CaMoO 4 has potential applications in various areas including phosphor microparticles and acousto-optic filters, catalyst, microwave applications, solid-state lasers, phosphor microparticles, energy storage, the blue phosphor in fluorescent lighting devices and MASER materials, in medical applications as scintillator, humidity sensors, Li-ion batteries, fluorescent lamps, photoluminescence, photocatalytic, nano-pigment, etc [23][24][25][26] . Various techniques have been used for synthesizing CaMoO 4 such as the Czochralski method [27] , coprecipitation [28] , combustion [29] , and conventional solid-state reaction [30] .…”
Section: Introductionmentioning
confidence: 99%