Green Synthesis of Large-Scale Highly Ordered Core@Shell Nanoporous Au@Ag Nanorod Arrays as Sensitive and Reproducible 3D SERS Substrates

2014 ◽  
Vol 6 (18) ◽  
pp. 15667-15675 ◽  
Author(s):  
Bin Chen ◽  
Guowen Meng ◽  
Qing Huang ◽  
Zhulin Huang ◽  
Qiaoling Xu ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Large Scale ◽  
Core Shell ◽  
Nanorod Arrays ◽  
Sers Substrates

Core/shell Ag@silicate nanoplatelets and poly(vinyl alcohol) spherical nanohybrids fabricated by coaxial electrospraying as highly sensitive SERS substrates

RSC Advances ◽  
2016 ◽  
Vol 6 (71) ◽  
pp. 67204-67211 ◽  
Author(s):  
Chih-Wei Chiu ◽  
Po-Hsien Lin
Keyword(s):  
Vinyl Alcohol ◽  
Large Scale ◽  
High Efficiency ◽  
Poly Vinyl Alcohol ◽  
Core Shell ◽  
Sers Substrate ◽  
Sers Substrates ◽  
Highly Sensitive ◽  
Coaxial Electrospray

A novel flexible, freestanding, large-scale, and disposable SERS substrate of core/shell Ag@silicate and poly(vinyl alcohol) spherical nanohybrids, fabricated by coaxial electrospray, allows for the high-efficiency detection of adenine from DNA.

scholarly journals Green Synthesis of Highly Concentrated and Stable Colloidal Dispersion of Core-Shell Silver Nanoparticles (AgNPs-Shell) and their Antimicrobial and Ultra-high Catalytic Properties

2021 ◽  
Author(s):  
Azam Ali ◽  
Mehrukh Zehravi ◽  
Muhammad Humble Khalid Treen ◽  
Jiri Militky ◽  
Fiaz Hussain ◽  
...  
Keyword(s):  
Green Synthesis ◽  
Tannic Acid ◽  
Large Scale ◽  
Catalytic Properties ◽  
Average Particle Size ◽  
Colloidal Dispersion ◽  
Alkaline Condition ◽  
Core Shell ◽  
Average Particle ◽  
One Pot

The versatile one-pot green synthesis of a highly concentrated and stable colloidal dispersion of AgNPs was carried out using the self-assembled tannic acid without using any other hazardous chemicals. Tannic acid (Plant-based polyphenol) was used as a reducing and stabilizing agent for silver nitrate in a mild alkaline condition. The synthesized AgNPs were characterized for their concentration, capping, size distribution, and shape. The experimental results confirmed the successful synthesis of nearly spherical and highly concentrated (2281 ppm) AgNPs, capped with poly-tannic acid (AgNPs-PTA). The average particle size of AgNPs-PTA was found 9.90 ± 1.60 nm. The colloidal dispersion of synthesized nanoparticles was observed stable for more than 15 months in the ambient environment (25 oC, 65 % relative humidity). The synthesized AgNPs-PTA showed an effective antimicrobial activity against Staphylococcus Aureus Escherichia coli. Ag-PTA also exhibited enhanced catalytic properties. It reduces 4-nitrophenol into 4-aminophenol in the presence of NaBH4 with a normalized rate constant (Knor = K/m) of 615.04 mL·s-1·mg-1. Furthermore, AgNPs-PTA were stable for more than 15 months under ambient conditions. The unique core-shell structure and ease of synthesis render the synthesized nanoparticles superior to others, with potential for large-scale applications, especially in the field of catalysis and biomedical.

scholarly journals Single-Step Green Synthesis of Highly Concentrated and Stable Colloidal Dispersion of Core-Shell Silver Nanoparticles and Their Antimicrobial and Ultra-High Catalytic Properties

Nanomaterials ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 1007
Author(s):  
Azam Ali ◽  
Mariyam Sattar ◽  
Fiaz Hussain ◽  
Muhammad Humble Khalid Tareen ◽  
Jiri Militky ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Green Synthesis ◽  
Tannic Acid ◽  
Rate Constant ◽  
Catalytic Properties ◽  
Colloidal Dispersion ◽  
Alkaline Condition ◽  
Core Shell ◽  
Average Particle ◽  
Ag Nps

The versatile one-pot green synthesis of a highly concentrated and stable colloidal dispersion of silver nanoparticles (Ag NPs) was carried out using the self-assembled tannic acid without using any other hazardous chemicals. Tannic acid (Plant-based polyphenol) was used as a reducing and stabilizing agent for silver nitrate in a mild alkaline condition. The synthesized Ag NPs were characterized for their concentration, capping, size distribution, and shape. The experimental results confirmed the successful synthesis of nearly spherical and highly concentrated (2281 ppm) Ag NPs, capped with poly-tannic acid (Ag NPs-PTA). The average particle size of Ag NPs-PTA was found to be 9.90 ± 1.60 nm. The colloidal dispersion of synthesized nanoparticles was observed to be stable for more than 15 months in the ambient environment (25 °C, 65% relative humidity). The synthesized AgNPs-PTA showed an effective antimicrobial activity against Staphylococcus Aureus (ZOI 3.0 mM) and Escherichia coli (ZOI 3.5 mM). Ag NPs-PTA also exhibited enhanced catalytic properties. It reduces 4-nitrophenol into 4-aminophenol in the presence of NaBH4 with a normalized rate constant (Knor = K/m) of 615.04 mL·s−1·mg−1. For comparison, bare Ag NPs show catalytic activity with a normalized rate constant of 139.78 mL·s−1·mg−1. Furthermore, AgNPs-PTA were stable for more than 15 months under ambient conditions. The ultra-high catalytic and good antimicrobial properties can be attributed to the fine size and good aqueous stability of Ag NPs-PTA. The unique core-shell structure and ease of synthesis render the synthesized nanoparticles superior to others, with potential for large-scale applications, especially in the field of catalysis and medical.

Construction of CoMoO4@Ni3S2 core-shell heterostructures nanorod arrays for high-performance supercapacitors

2021 ◽  
Vol 35 ◽  
pp. 102319
Author(s):  
Tao Wang ◽  
Weibing Ma ◽  
Yuxin Zhang ◽  
Jingdong Guo ◽  
Tingting Li ◽  
...  
Keyword(s):  
High Performance ◽  
Core Shell ◽  
Nanorod Arrays

Simple, Large-Scale Patterning of Hydrophobic ZnO Nanorod Arrays

2012 ◽  
Vol 4 (8) ◽  
pp. 3910-3915 ◽  
Author(s):  
Seong Been Kim ◽  
Won Woo Lee ◽  
Jaeseok Yi ◽  
Won Il Park ◽  
Jin-Sang Kim ◽  
...  
Keyword(s):  
Large Scale ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays

Facile and Green Synthesis of Core–Shell Structured Magnetic Chitosan Submicrospheres and Their Surface Functionalization

Langmuir ◽  
2013 ◽  
Vol 29 (37) ◽  
pp. 11770-11778 ◽  
Author(s):  
Yiya Li ◽  
Dongying Yuan ◽  
Mingjie Dong ◽  
Zhihua Chai ◽  
Guoqi Fu
Keyword(s):  
Green Synthesis ◽  
Surface Functionalization ◽  
Core Shell ◽  
Magnetic Chitosan

CuO@NiCoFe-S core-shell nanorod arrays based on Cu foam for high performance energy storage

2021 ◽  
Author(s):  
Zeyuan Hu ◽  
Yidong Miao ◽  
Xiaolan Xue ◽  
Bin Xiao ◽  
Jiqiu Qi ◽  
...  
Keyword(s):  
Energy Storage ◽  
High Performance ◽  
Core Shell ◽  
Nanorod Arrays ◽  
Cu Foam

Facile synthesis of Ag@SiO2 core–shell nanowires on large scale

2014 ◽  
Vol 26 (3) ◽  
pp. 1602-1607 ◽  
Author(s):  
Fang Li ◽  
Yu-Ling Zhao ◽  
Wei Dai ◽  
Jing Chen ◽  
Zhengquan Li ◽  
...  
Keyword(s):  
Large Scale ◽  
Core Shell ◽  
Facile Synthesis ◽  
Shell Nanowires
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