Surface functionalization of extracted nanosilica from rice husk for augmenting mechanical and optical properties of synthesized LDPE-Starch biodegradable film

2019 ◽  
Vol 77 ◽  
pp. 105878 ◽  
Author(s):  
Deepshikha Datta ◽  
Sucharita Samanta ◽  
Gopinath Halder
Keyword(s):  
Optical Properties ◽  
Rice Husk ◽  
Surface Functionalization ◽  
Biodegradable Film

scholarly journals Synthesis of biodegradable films obtained from rice husk and sugarcane bagasse to be used as food packaging material

2019 ◽  
Vol 25 (4) ◽  
pp. 506-514 ◽  
Author(s):  
Himanshu Gupta ◽  
Harish Kumar ◽  
Mohit Kumar ◽  
Avneesh Kumar Gehlaut ◽  
Ankur Gaur ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Sugarcane Bagasse ◽  
Rice Husk ◽  
Food Packaging ◽  
Packaging Material ◽  
Biodegradable Films ◽  
Biodegradable Film ◽  
Biocomposite Film ◽  
Biopolymer Film ◽  
Lignocellulose Biomass

The current study stresses on the reuse of waste lignocellulose biomass (rice husk and sugarcane bagasse) for the synthesis of carboxymethyl cellulose (CMC) and further conversion of this CMC into a biodegradable film. Addition of commercial starch was done to form biodegradable film due to its capacity to form a continuous matrix. Plasticizers such as Glycerol and citric acid were used to provide flexibility and strength to the film. Biopolymer film obtained from sugarcane bagasse CMC showed maximum tensile strength and elongation in comparison to the film synthesized from commercial CMC and CMC obtained from rice husk. It has been observed that an increase in sodium glycolate/NaCl content in CMC imposed an adverse effect on tensile strength. Opacity, moisture content, and solubility of the film increased with a rise in the degree of substitution of CMC. Therefore, CMC obtained from sugarcane bagasse was better candidate in preparing biopolymer/biocomposite film.

scholarly journals Tuning the Optical Properties of Silicon Quantum Dots via Surface Functionalization with Conjugated Aromatic Fluorophores

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Mohammed Abdelhameed ◽  
Diego Rota Martir ◽  
Shalimar Chen ◽  
William Z. Xu ◽  
Olabode O. Oyeneye ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Optical Properties ◽  
Surface Functionalization ◽  
Silicon Quantum Dots

Surface functionalization of GeC monolayer with F and Cl: Electronic and optical properties

2020 ◽  
Vol 137 ◽  
pp. 106359 ◽  
Author(s):  
Tuan V. Vu ◽  
Nguyen Thi Tuyet Anh ◽  
Duy Phu Tran ◽  
D.M. Hoat ◽  
Nguyen T.T. Binh ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Functionalization ◽  
Electronic And Optical Properties

Applications of Gold Nanoparticles in Biosensors

Nano LIFE ◽  
2016 ◽  
Vol 06 (02) ◽  
pp. 1642001 ◽  
Author(s):  
Xinjun Yu ◽  
Yang Jiao ◽  
Qinyuan Chai
Keyword(s):  
Heavy Metals ◽  
Gold Nanoparticles ◽  
Optical Properties ◽  
Metal Nanoparticles ◽  
Surface Area ◽  
Surface Functionalization ◽  
High Surface ◽  
High Surface Area ◽  
Synthetic Methods ◽  
Future Perspective

Gold nanoparticles (AuNPs) as one of the most stable metal nanoparticles have demonstrated extensive applications in recent years. This paper will give a focus on the AuNPs as biosensors, due to their inertness, unique optical properties, high surface area, and various surface functionalization methods. Synthesis of AuNps and the surface functionalization will be discussed in the first part. The size, shape, and stability can be controlled by different synthetic methods, while reductant usually needed. By surface functionalization with different molecules such as polymers, nucleic acids, and proteins, AuNPs will aggregate when specified molecule linkages showing up enables selective detections. The application in biosensing to detect proteins, oligonucleotide, glucose, and heavy metals will be exemplified, followed by the summary and future perspective part in the conclusion.

Influence of reaction parameters on the photoluminescence properties of free standing functionalized silicon nanocrystals

2010 ◽  
Vol 1260 ◽  
Author(s):  
Anoop Gupta ◽  
Hartmut Wiggers
Keyword(s):  
Optical Properties ◽  
Surface Functionalization ◽  
Silicon Nanocrystals ◽  
Organic Molecules ◽  
Surface Passivation ◽  
Light Emission ◽  
Emission Spectra ◽  
Surface Oxidation ◽  
Free Standing ◽  
The Stability

AbstractWhile silicon nanostructures acquire novel optical properties due to miniaturization, the stability of light emission is severely limited because of exciton trapping due to surface oxidation coming along with the formation of defects. Grafting of organic molecules on a hydrogen-terminated silicon surface via hydrosilylation provides a promising route to stabilize their surface against oxidation. In this communication, we report on the effect of surface passivation on the optical properties of freestanding silicon nanocrystals (Si-NCs). The surface functionalization of hydrogen-terminated Si-NCs with organic molecules was achieved via liquid phase hydrosilylation. We demonstrate that surface functionalization does not preserve the original emission of hydrogen-terminated Si-NCs. It is observed that the emission spectrum of green emitting hydrogen-terminated Si-NCs is red shifted after surface functionalization. We find that the direction of shift does not depend on the type of organic ligands and the reaction conditions, however, the amount of shift can be altered. The factors influencing the shift in the emission spectra of functionalized Si-NCs with respect to hydrogen-terminated samples are discussed.

scholarly journals Effect of MnO2 doped on physical, structure and optical properties of zinc silicate glasses from waste rice husk ash

2017 ◽  
Vol 7 ◽  
pp. 955-961 ◽  
Author(s):  
Ali Jabbar Abed Al-Nidawi ◽  
Khamirul Amin Matori ◽  
Azmi Zakaria ◽  
Mohd Hafiz Mohd Zaid
Keyword(s):  
Optical Properties ◽  
Rice Husk ◽  
Rice Husk Ash ◽  
Physical Structure ◽  
Silicate Glasses ◽  
Zinc Silicate

scholarly journals Soil cover with rice husk, polyethylene and biodegradable film in bell pepper (Capsicum annum L.) cultivation

2020 ◽  
Vol 15 (7) ◽  
pp. 1
Author(s):  
Paulo Fortes Neto ◽  
Nara Lúcia Perondi Fortes ◽  
Elizabeth Da Costa Neves Fernandes de Almeida Duarte ◽  
Rita Do Amaral Fragoso
Keyword(s):  
Rice Husk ◽  
Soil Cover ◽  
Bell Pepper ◽  
Polyethylene Film ◽  
Biodegradable Film ◽  
Fruit Length ◽  
Pipe Line ◽  
Weed Infestation ◽  
Measured Flow ◽  
Red Latosol

A field trial regarding the effect of different types of soil cover on the characteristics of bell pepper (Capsicum annuum L. Yolo Wonder) fruit and incidence of weeds was conducted at the facilities of the Department of Agrarian Sciences (UNITAU), Taubaté -SP at 23º02'34" S and 45º31'02" W, with an average elevation of 577 m in a medium-textured dystrophic Yellow Red Latosol. The experimental design was a randomized block with five replicates and four treatments: 1) coat of rice husk (CRH); 2) black polyethylene film (BPF); 3) black biodegradable film (BBF); and 4) soil without cover (SWC), with five replicates. The treatments were distributed in flower beds with 1.2 m wide, 0.3 m high and 10 m long. Drip irrigation was placed on the surface of the beds, with a pipe line (dripping distance 0.4 m, measured flow rate of 1.67 L.h-1, service pressure of 1.6 kPa). Harvesting occurred 90 days after planting the seedlings, and the length, number and weight of the bell pepper fruits were determined. The weed plants in the plot were evaluated in five samples of 0.25 m2 randomly obtained per plot. The coverings had a significant effect on fruit length, number and weight, and black polyethylene film and biodegradable film obtained better results, compared to the coat of rice husk and soil without cover. In the coverings with polyethylene film and biodegradable film, the fruit length was above 12 cm, the number of fruit exceeded 10 fruit per plant and the weight of the fruit was superior to 1 kg per plant. Polyethylene film and biodegradable film reduced weed infestation by 75.4% on average when compared to soil without cover. It can be concluded that the biodegradable film presented the same efficiency as the polyethylene film as regards the productivity of the pepper crop and the reduction of weeds.

A molecularly imprinted modified CdSeS/ZnS core–shell quantum dot embedded glass slide for highly selective and sensitive solid phase optosensing of trace amounts of lidocaine in biological samples

2019 ◽  
Vol 11 (6) ◽  
pp. 851-859 ◽  
Author(s):  
Hamidreza Ahmadpour ◽  
Seyed Mohamadreza Milani Hosseini
Keyword(s):  
Optical Properties ◽  
Surface Functionalization ◽  
Biological Samples ◽  
Solid Phase ◽  
Glass Slide ◽  
Selective Recognition ◽  
Core Shell ◽  
Imprinted Polymer ◽  
Molecularly Imprinted

An optosensing material based on surface functionalization of a glass slide with quantum dots (QDs) and molecularly imprinted polymer (glass slide@QDs@MIP) with unique optical properties of QDs and selective recognition of MIPs was fabricated for the determination of lidocaine in biological samples.

scholarly journals Composition-, Size-, and Surface Functionalization-Dependent Optical Properties of Lead Bromide Perovskite Nanocrystals

2020 ◽  
Vol 11 (6) ◽  
pp. 2079-2085 ◽  
Author(s):  
Palvasha Ijaz ◽  
Muhammad Imran ◽  
Márcio M. Soares ◽  
Hélio C. N. Tolentino ◽  
Beatriz Martín-García ◽  
...  
Keyword(s):  
Optical Properties ◽  
Surface Functionalization ◽  
Perovskite Nanocrystals ◽  
Lead Bromide
Sign in / Sign up

Export Citation Format

Share Document