Hierarchical porous carbon microspheres with superhydrophilic surface for efficient adsorption and detection of water-soluble contaminants

2018 ◽  
Vol 6 (25) ◽  
pp. 12153-12161 ◽  
Author(s):  
Junfang Li ◽  
Hua Bai ◽  
Xinshi Li ◽  
Wentao Li ◽  
Junfeng Zhai ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Active Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Water Soluble ◽  
Carbon Microspheres ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Superhydrophilic Surface

A hierarchical porous carbon microspheres with superhydrophilic surfaces for efficient adsorption water-soluble contaminants is reported. After loading gold nanoparticles, they also can be used as an active surface-enhanced Raman spectroscopy substrate with ultralow detection limit.

scholarly journals SERS on Bimetallic Nanostructured thin films

2021 ◽  
Author(s):  
revathy m s ◽  
D Murugesan ◽  
Naidu Dhanpal Jayram
Keyword(s):  
Thin Films ◽  
Thermal Evaporation ◽  
Low Cost ◽  
Active Surface ◽  
Surface Enhanced Raman Spectroscopy ◽  
Nanostructured Film ◽  
Sers Substrates ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
The Cost

Abstract Thin films and Surface Enhanced Raman spectroscopy have a strong bonding towards development of Sensors. From last 4 decades SERS has been used as effective tool for detection of toxic dyes, in food industry and agriculture world. To minimize the cost and fabrication over large surface is the most challenging task in substrate fabrication. In the present work an attempt has been made towards dual coatings, which could act as an effective SERS Substrates. An effective and facile approach of low cost bi-metallic Nanostructured film has been fabricated using thermal evaporation. Using the standard characterization techniques such as FE-SEM and XRD, the obtained films were Rhodamine 6G was used as an analyte for the SERS studies. The detection of R6G was up to 10− 10mol l− 1solution.The present bi-metallic coating can be serves as an excellent SERS active surface and provides a versatile pathway to fabricate anisotropic nanostructure on a glass film.

Hierarchical porous carbon with graphitic structure synthesized by a water soluble template method

2012 ◽  
Vol 87 ◽  
pp. 77-79 ◽  
Author(s):  
Naiqin Zhao ◽  
Shan Wu ◽  
Chunnian He ◽  
Chunsheng Shi ◽  
Enzuo Liu ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Water Soluble ◽  
Template Method ◽  
Hierarchical Porous Carbon ◽  
Graphitic Structure ◽  
Hierarchical Porous

scholarly journals Porous carbon nanowire array for surface-enhanced Raman spectroscopy

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Nan Chen ◽  
Ting-Hui Xiao ◽  
Zhenyi Luo ◽  
Yasutaka Kitahama ◽  
Kotaro Hiramatsu ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Porous Carbon ◽  
Hot Spots ◽  
Strong Dependence ◽  
Nanowire Array ◽  
Surface Enhanced Raman Spectroscopy ◽  
Localized Surface Plasmon ◽  
Sers Substrate ◽  
Surface Enhanced ◽  
Surface Enhanced Raman

Abstract Surface-enhanced Raman spectroscopy (SERS) is a powerful tool for vibrational spectroscopy as it provides several orders of magnitude higher sensitivity than inherently weak spontaneous Raman scattering by exciting localized surface plasmon resonance (LSPR) on metal substrates. However, SERS can be unreliable for biomedical use since it sacrifices reproducibility, uniformity, biocompatibility, and durability due to its strong dependence on “hot spots”, large photothermal heat generation, and easy oxidization. Here, we demonstrate the design, fabrication, and use of a metal-free (i.e., LSPR-free), topologically tailored nanostructure composed of porous carbon nanowires in an array as a SERS substrate to overcome all these problems. Specifically, it offers not only high signal enhancement (~106) due to its strong broadband charge-transfer resonance, but also extraordinarily high reproducibility due to the absence of hot spots, high durability due to no oxidization, and high compatibility to biomolecules due to its fluorescence quenching capability.

Simple synthesis of novel hierarchical porous carbon microspheres and their application to rechargeable lithium-ion batteries

Carbon ◽  
2015 ◽  
Vol 81 ◽  
pp. 314-321 ◽  
Author(s):  
Fangfang Wang ◽  
Ranran Song ◽  
Huaihe Song ◽  
Xiaohong Chen ◽  
Jisheng Zhou ◽  
...  
Keyword(s):  
Lithium Ion Batteries ◽  
Porous Carbon ◽  
Lithium Ion ◽  
Simple Synthesis ◽  
Carbon Microspheres ◽  
Hierarchical Porous Carbon ◽  
Hierarchical Porous

scholarly journals Surface Enhanced Raman Spectroscopy for In-Field Detection of Pesticides: A Test on Dimethoate Residues in Water and on Olive Leaves

Molecules ◽  
2019 ◽  
Vol 24 (2) ◽  
pp. 292 ◽  
Author(s):  
Lorenzo Tognaccini ◽  
Marilena Ricci ◽  
Cristina Gellini ◽  
Alessandro Feis ◽  
Giulietta Smulevich ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Surface Enhanced Raman Spectroscopy ◽  
Organic Production ◽  
Water Soluble ◽  
Residual Water ◽  
Olive Leaves ◽  
Production Chain ◽  
Surface Enhanced ◽  
Surface Enhanced Raman ◽  
Olive Trees

Dimethoate (DMT) is an organophosphate insecticide commonly used to protect fruit trees and in particular olive trees. Since it is highly water-soluble, its use on olive trees is considered quite safe, because it flows away in the residual water during the oil extraction process. However, its use is strictly regulated, specially on organic cultures. The organic production chain certification is not trivial, since DMT rapidly degrades to omethoate (OMT) and both disappear in about two months. Therefore, simple, sensitive, cost-effective and accurate methods for the determination of dimethoate, possibly suitable for in-field application, can be of great interest. In this work, a quick screening method, possibly useful for organic cultures certification will be presented. DMT and OMT in water and on olive leaves have been detected by surface enhanced Raman spectroscopy (SERS) using portable instrumentations. On leaves, the SERS signals were measured with a reasonably good S/N ratio, allowing us to detect DMT at a concentration up to two orders of magnitude lower than the one usually recommended for in-field treatments. Moreover, detailed information on the DMT distribution on the leaves has been obtained by Raman line- (or area-) scanning experiments.

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