Aim and shoot: molecule-imprinting polymer coated MoO₃ for selective SERS detection and photocatalytic destruction of low-level organic contaminants

Abstract

A selective and high sensitive SERS substrate based on MoO3 nanorod was fabricated through the finely controllable coating of an ultrathin molecule-imprinting polymethacrylic acid layer.

Detection of Foodborne Pathogens by Surface Enhanced Raman Spectroscopy

“…What is more, Wang W. et al (2016) obtained the SERS activity of EC-SERS by combining the ultra-microelectrode with SERS in order to obtain real-time transient Raman information, and the combination has a more stable and high signal of SERS. Similarly, in order to detect the amount of residues in samples, Wang L. et al (2017) combined molecular imprinting with SRES detection technology to finally obtain a good specificity and sensitivity of Raman spectroscopy signals, besides the time of detection by SERS is greatly shortened. Wang W. et al (2016) studied the materials of SERS active substrate by using the electrochemical method to improve the stability and sensitivity of SERS.…”

Single sea urchin–MoO3 nanostructure for surface enhanced Raman spectroscopy of dyes

“…6,7 Therefore, in recent years, extensive research has been focused interest in exploring MoO 3 nanostructures as SERS substrates since the report on local plasmons of MoO 3Àx nanostructures due to oxygen vacancies. 23,24 Dong et al reported an enhancement factor (EF) of 10 3 from 1D MoO 3 for the 4-mercaptobenzoic acid analyte and theoretical studies conrmed that the enhanced SERS is mainly due to the charge transfer mechanism. 13 The coupling of 1D MoO 3 nanowires with Au NPs exhibited high SERS sensitivity to melamine showing a limit of detection of 0.01 ppb.…”

“…The critical step here is the pretreatment of MoO 3 nanorods with HNO 3 to provide sufficient surface hydroxyl groups for the anchoring of polymethacrylic acid. 24 Wu et al reported a general route to transform non-SERS substrates into active SERS substrates by engineering the defects and achieved an EF of 1.8 Â 10 7 for rhodamine 6G (R6G) over a-MoO 3Àx nanobelts. 19 The reported methods to prepare SERS active MoO 3 nanostructures include the vapour transport method, hydrothermal synthesis, etc that require higher temperatures and postthermal treatments.…”

“…19 The reported methods to prepare SERS active MoO 3 nanostructures include the vapour transport method, hydrothermal synthesis, etc that require higher temperatures and postthermal treatments. 13,19,24 We have been exploring simple onestep synthesis protocols for obtaining novel 1D morphologies of MoO 3 for improvement in SERS. 26 In this article, we present the synthesis of hydrated MoO 3 sea urchin nanostructures employing a simple chemical bath deposition method.…”

Molecularly Imprinted Polymer-Based Hybrid Materials for the Development of Optical Sensors

“…On the other hand, Wang et al [106] developed a sensor based on MoO 3 , also active in SERS, covered with a MIP for the selective detection of methylene blue. In this case the material was treated with acid to generate hydroxyl groups on the surface and then functionalized with MPS to further grow the polymer on the surface.…”