In situ production of silver nanoparticles on an aldehyde-equipped conjugated porous polymer and subsequent heterogeneous reduction of aromatic nitro groups at room temperature

2015 ◽  
Vol 51 (61) ◽  
pp. 12197-12200 ◽  
Author(s):  
Jie Liu ◽  
Jieshun Cui ◽  
Filipe Vilela ◽  
Jun He ◽  
Matthias Zeller ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Room Temperature ◽  
Porous Polymer ◽  
Aromatic Nitro ◽  
Aldehyde Groups ◽  
Heterogeneous Reduction ◽  
Silver Lining ◽  
Polymer Host ◽  
In Situ Production

Silver lining on porous polymer – all from heating Tollen's reagent and a polymer host deriving its versatile functions from pendant aldehyde groups and rigid thioether joints.

Green Synthesis of Silk Sericin-Based Silver Nanoparticles

2011 ◽  
Vol 415-417 ◽  
pp. 487-490 ◽  
Author(s):  
Jia Li Ding ◽  
Wen Wu
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Room Temperature ◽  
Reduction Reaction ◽  
In Situ Reduction ◽  
Silk Sericin ◽  
Vis Spectroscopy ◽  
Highly Dispersed ◽  
Average Size

Green synthesis of silver nanoparticles (AgNPs) using the silk sericin (SS) solution by in situ reduction at room temperature is reported. The effect of pH on the reduction reaction is studied by UV-Vis spectroscopy. The structure of the sericin-based silver nanoparticles is characterized by TEM. According to the TEM images, the average size of the silver nanoparticles is about 16 nm. The silver nanoparticles are highly dispersed and stable in silk sericin solution for monthes.

Green Synthesis of Semi-IPN Hydrogel-Silver Nanocomposites by a Biotemplate Redox Technique at Room Temperature

2012 ◽  
Vol 468-471 ◽  
pp. 1974-1977
Author(s):  
Wen Wu ◽  
Dong Sheng Wang
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Silver Nitrate ◽  
Room Temperature ◽  
In Situ Reduction ◽  
X Ray Diffraction ◽  
Silk Sericin ◽  
X Ray ◽  
Silver Nanocomposites

Semi-IPN hydrogels in which silk sericin (SS) chains were physically dispersed throughout dextran (Dex) gel networks were synthesized. Highly stable distributed silver nanoparticles have been prepared using these semi-IPN hydrogels as a carrier via in situ reduction of silver nitrate without the addition of any reducing agent. The resultant semi-IPN hydrogel-silver nanocomposites were characterized by X-ray diffraction (XRD). And the swelling behavior of the hydrogles was also studied.

Silver nanoparticles: facile synthesis and their catalytic application for the degradation of dyes

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25781-25788 ◽  
Author(s):  
Kamaldeep Sharma ◽  
Gurpreet Singh ◽  
Gurpreet Singh ◽  
Manoj Kumar ◽  
Vandana Bhalla
Keyword(s):  
Room Temperature ◽  
Dye Degradation ◽  
Catalytic Efficiency ◽  
Organic Dye ◽  
Facile Synthesis ◽  
Catalytic Application ◽  
Degradation Of Dyes ◽  
Organic Dye Degradation ◽  
Aldehyde Groups

The aggregates of pentacenequinone, HPB and PDI derivatives 3, 5 and 7 having aldehyde groups bind strongly with Ag+ and serve as reactors and stabilizers for the preparation of AgNPs at room temperature. In situ generated AgNPs show high catalytic efficiency for industrially important organic dye degradation.

In Situ Production of Polymer-Capped Silver Nanoparticles for Optical Biosensing

2009 ◽  
Vol 283-284 (1) ◽  
pp. 167-173 ◽  
Author(s):  
E. Giorgetti ◽  
A. Giusti ◽  
E. Arias ◽  
I. Moggio ◽  
A. Ledezma ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Optical Biosensing ◽  
In Situ Production

In situ functionalization of highly porous polymer microspheres with silver nanoparticles via bio-inspired chemistry

RSC Advances ◽  
2014 ◽  
Vol 4 (98) ◽  
pp. 55604-55609 ◽  
Author(s):  
Ho Yeon Son ◽  
Dong Jae Lee ◽  
Jun Bae Lee ◽  
Chun Ho Park ◽  
Mintae Seo ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Porous Polymer ◽  
Polymer Microspheres ◽  
Inorganic Hybrid ◽  
Porous Microparticles ◽  
In Situ Functionalization ◽  
Highly Porous

Organic–inorganic hybrid porous microparticles.

Compliant and Low-Cost Humidity Sensors Using Nano-Porous Polymer Membranes

2004 ◽  
Author(s):  
Bozhi Yang ◽  
Burak Aksak ◽  
Shan Liu ◽  
Qiao Lin ◽  
Metin Sitti
Keyword(s):  
Relative Humidity ◽  
Room Temperature ◽  
Capillary Condensation ◽  
Low Cost ◽  
Polymer Membranes ◽  
High Sensitivity ◽  
Porous Polymer ◽  
Humidity Sensors ◽  
Water Leakage Detection

This paper proposes non-fragile compliant humidity sensors that can be fabricated inexpensively on various types of nano-porous polymer membranes such as polycarbonate, cellulose acetate, and nylon membranes. The sensor contains a pair of interdigitated electrodes deposited on the nano-porous polymer membranes. The resistance and/or capacitance between these electrodes vary at different humidity levels with a very high sensitivity due to the water adsorption (capillary condensation) inside the nano-pores. The proposed sensors are low-cost in both material and fabrication. Due to its compliance, the sensors can be suitable for certain applications such as in-situ water leakage detection on roofs, where people can walk on top of them. Testing results demonstrated that the sensor changes resistance within large range of humidity values. For most sensors, the resistance changes from 0.1 GΩ to 2000 GΩ when the relative humidity changes from 39% to 100% at room temperature. It takes about 4–8 minutes for the resistance to reach steady state when the sensor was taken from 100% to 39% relative humidity at the room temperature.

Study on Effect of Sericin on Size and Shape of Silver Nanoparticles Prepared by a Redox Method

2014 ◽  
Vol 1015 ◽  
pp. 480-483
Author(s):  
Men Wu ◽  
Dong Sheng Wang
Keyword(s):  
Silver Nanoparticles ◽  
Room Temperature ◽  
Reaction System ◽  
Reducing Agent ◽  
Stabilizing Agent ◽  
Multiple Functions ◽  
Silk Sericin ◽  
Size And Shape ◽  
Redox Method

Silk sericin is used as a biotemplate to redox silver nanoparticles in situ at room temperature. Silk sericin provides multiple functions in the whole reaction system, serving as the reducing agent of Ag+, and the dispersing and stabilizing agent of the resulted silver nanoparticles. The effect of the concentration of sericin on size and shape of the reduced silver nanoparticles is studied. UV-vis spectra and TEM are used to detected the characteristic plasmon and the appearance of the obtained silver nanoparticles.

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