Robust synthesis of mono-dispersed spherical silica nanoparticle from rice husk for high definition latent fingermark development

Rajan, Revathi; Zakaria, Yusmazura; Shamsuddin, Shaharum; Hassan, Nik Fakhuruddin Nik

doi:10.1016/j.arabjc.2020.09.042

Cited by 21 publications

(13 citation statements)

References 38 publications

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“…Figure S3 shows the FTIR spectra of the two synthesized nanoparticles: SiO 2 -80 and SiO 2 -330. The main peaks related to silica are the vibrations of the −OH groups in the region of 3700–3200 cm –1 and those of Si–O at 1320–1000 cm –1 . It is also possible to observe the peaks related to the MPS at 2930, 2845, and 1452 cm –1 , corresponding to the asymmetric and symmetric stretching of CH 2 and its plane deformation, respectively, as well as the stretching of CO at 1713 cm –1 .…”

Section: Resultsmentioning

confidence: 95%

“…The main peaks related to silica are the vibrations of the −OH groups in the region of 3700−3200 cm −1 and those of Si−O at 1320−1000 cm −1 . 27 It is also possible to observe the peaks related to the MPS at 2930, 2845, and 1452 cm −1 , corresponding to the asymmetric and symmetric stretching of CH 2 and its plane deformation, respectively, as well as the stretching of CO at 1713 cm −1 . 28 These results confirm the formation of the silica structure with MPS groups anchored onto the nanoparticles surface.…”

Section: ■ Results and Discussionmentioning

confidence: 96%

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Analyzing the Effects of Silica Nanospheres on the Sol–Gel Transition Profile of Thermosensitive Hydrogels

et al. 2021

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The insertion of nanoparticles into smart hydrogels can diversify their functionalities by a synergistic combination of the components properties within the hydrogels. While these hybrid systems are attractive to the biomaterials field, careful design and control of their properties are required since the new interactions between the polymer and the nanoparticles can result in changes or the loss of hydrogels stimuli response. In order to understand the physicochemical aspects of the thermoresponsive systems, nanocomposites of poly(N-vinylcaprolactam) (PNVCL) and silica nanoparticles with different sizes and concentrations were synthesized. The UV–vis and DLS techniques showed that the PNVCL has a sharp phase transition at 34 °C, while the nanocomposites have a diffuse transition. The nanocomposites showed an initial coil–globule transition before the phase transition takes place. This was identified by the evolution of the hydrodynamic diameter of the nanocomposite globules before the cloud point temperature (T cp), which remained constant for PNVCL. This new transition profile can be described by two stages in which microscopic volume transitions occur first, followed by the macroscopic transition that forms the hydrogel. These results show that the proposed nanocomposites can be designed to have tunable stimuli response to smaller temperature variations with the formation of intermediate globule states.

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Section: Resultsmentioning

confidence: 95%

Section: ■ Results and Discussionmentioning

confidence: 96%

Analyzing the Effects of Silica Nanospheres on the Sol–Gel Transition Profile of Thermosensitive Hydrogels

et al. 2021

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“…No Biodegradable materials Parts used Method used Types of nanoparticles/nanomaterials synthesized (NPs) Applications References 1 Tamarindus indica Fruit shell extract CVD Technique Ag Anticancerous activities [ 32 ] Carbon nanosheets Supercapacitor applications [ 63 ] Hydrothermal method Cu Antibacterial activities medical applications [ 64 ] 2 Cocos nucifera Coconut shell Solvent extraction Ag Antibacterial activity [ 65 ] Green synthesis Ag Used in mosquito control, Biomedical application, agricultural application [ 66 ] Skewer coconut leaves Sol–gel method Silica Removal of methylene blue (dye) from aquatic environment thereby preventing water pollution [ 67 ] 3 Oryza sativa Rice husk Thermal-assisted seed particle formation and particle growth by acidification of the solvent sodium silicate solution Silica It aids to obtain a clear and sharp photograph of latent fingermarks. Useful for crime investigation identification [ 68 ] Microwave oven (MO) technique Carbon nanotube Applicable in the electrochemical e...…”

Section: Titanium Dioxide Nanoparticles ( )mentioning

confidence: 99%

Green synthesis of nanoparticles from biodegradable waste extracts and their applications: a critical review

Aswathi

Meera

Maria

et al. 2022

Nanotechnol. Environ. Eng.

164

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The contemporary world is concerned only with non-biodegradable waste management which needs more sophisticated procedures as compared to biodegradable waste management. Biodegradable waste has the potential to become useful to society through a simple volarization technique. The researchers are behind sustainable nanotechnology pathways which are made possible by using biodegradable waste for the preparation of nanomaterials. This review emphasizes the potentialities of biodegradable waste produced as a viable alternative to create a sustainable economy that benefits all humans. Volarization results in the utilization of biowastes as well as provides safer and hazard-free green methods for the synthesis of nanoparticles. Starting from different sources to the application which includes therapeutics, food industry and water treatment. The review hovers over the pros and cons of biowaste-mediated nanoparticles and concludes with possible advances in the application. In the present scenario, the combination of green synthesis and biowaste can bring about a wide variety of applications in nanotechnology once the hurdles of bulk-scale industrial production are resolved. Given these points, the review is focused on the cost-effective synthesis of metal and metal oxide nanoparticles.

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“…The use of acetone, an organic solvent, has also been shown to be effective in producing spherical silica particles. Rajan et al [73] added 40 mL of acetone to 100 mL of sodium silicate solution extracted from rice husk. Afterwards, the pH of the solution was adjusted to 7 using 5 M acetic acid.…”

Section: Control Of Morphological Properties Of Silica Particlesmentioning

confidence: 99%

Recent Progress on the Development of Engineered Silica Particles Derived from Rice Husk

Chun

Lee

2020

Sustainability

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The development of engineered silica particles by using low-cost renewable or waste resources is a key example of sustainability. Rice husks have emerged as a renewable resource for the production of engineered silica particles as well as bioenergy. This review presents a state-of-the-art process for the development of engineered silica particles from rice husks via a bottom-up process. The first part of this review focuses on the extraction of Si from rice husks through combustion and chemical reactions. The second part details the technologies for synthesizing engineered silica particles using silicate obtained from rice husks. These include technologies for the precipitation of silica particles, the control of morphological properties, and the synthesis of ordered porous silica particles. Finally, several issues that need to be resolved before this process can be commercialized are addressed for future research.

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Robust synthesis of mono-dispersed spherical silica nanoparticle from rice husk for high definition latent fingermark development

Cited by 21 publications

References 38 publications

Analyzing the Effects of Silica Nanospheres on the Sol–Gel Transition Profile of Thermosensitive Hydrogels

Analyzing the Effects of Silica Nanospheres on the Sol–Gel Transition Profile of Thermosensitive Hydrogels

Green synthesis of nanoparticles from biodegradable waste extracts and their applications: a critical review

Recent Progress on the Development of Engineered Silica Particles Derived from Rice Husk

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