SERS performance of graphene oxide decorated silver nanoparticle/titania nanotube array

Xie, Yibing; Meng, Yu-jie

doi:10.1039/c4ra07865a

Cited by 57 publications

(24 citation statements)

References 56 publications

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“…The graphene oxide (GO) was prepared in accordance with existing literature [37]. For a typical hydrothermal synthesis, 2 g of GO was dispersed in 50 ml of deionized water followed by addition of Ni(NO3)﹒6H2O (0.45g), C6H12N4 (0.5g) and…”

Section: Preparation Of Nio-gns/panimentioning

confidence: 99%

Nano nickel oxide coated graphene/polyaniline composite film with high electrochemical performance for flexible supercapacitor

Wang

Zhang

et al. 2016

Electrochimica Acta

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Section: Preparation Of Nio-gns/panimentioning

confidence: 99%

Nano nickel oxide coated graphene/polyaniline composite film with high electrochemical performance for flexible supercapacitor

Wang

Zhang

et al. 2016

Electrochimica Acta

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“…Intensively, TiO 2 nanoarray was selected as a potential candidate for the utilization of recyclable SERS substrate . Our previous work had proven that GO/Ag/TiO 2 NTA could be used for SERS detection of BPA molecule and recycling application through photocatalytic self‐cleaning treatment under ultraviolet (UV) light irradiation . However, TiO 2 is n‐type semiconductor with a wide band gap of 3.0–3.2 eV, presenting its photocatalytic activity only under UV light irradiation.…”

Section: Introductionmentioning

confidence: 99%

Visible‐light‐driven self‐cleaning SERS substrate of silver nanoparticles and graphene oxide decorated nitrogen‐doped titania nanotube array

Xie

Meng

2016

Surface & Interface Analysis

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Graphene oxide (GO) and silver nanoparticles (Ag NPs) sequentially decorated nitrogen‐doped titania nanotube array (N‐TiO2 NTA) had been designed as visible‐light‐driven self‐cleaning surface‐enhanced Raman scattering (SERS) substrate for a recyclable SERS detection application. N‐TiO2 NTA was fabricated by anodic oxidation and then doping nitrogen treatment in ammonia atmosphere, acting as a visible‐light‐driven photocatalyst and supporting substrate. Ag/GO/N‐TiO2 NTA was prepared by decorating GO monolayer through an impregnation process and then depositing Ag NPs through a polyol process on the surface of N‐TiO2 NTA, acting as the collection of organic molecule and Raman enhancement. The SERS activity of Ag/GO/N‐TiO2 NTA was evaluated using methyl blue as an organic probe molecule, revealing the analytical enhancement factor of 4.54 × 104. Ag/GO/N‐TiO2 NTA was applied as active SERS substrate to determine a low‐affinity organic pollutant of bisphenol A, revealing the detection limit of as low as 5 × 10−7 m. Ag/GO/N‐TiO2 NTA could also achieve self‐cleaning function for a recycling utilization through visible‐light‐driven photocatalytic degradation of the adsorbed organic molecules. Ag/GO/N‐TiO2 NTA has been successfully reused for five times without an obvious decay in accuracy and sensitivity for organic molecule detection. The unique properties of this SERS substrate enable it to have a promising application for the sensitive and recyclable SERS detection of low‐affinity organic molecules. Copyright © 2016 John Wiley & Sons, Ltd.

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“…Nanostructured titania (TiO 2 ) is an excellent metal oxide nanomaterial with nontoxicity, low cost, good biocompatibility and good hydrophilicity, and is used to immobilize enzymes for fabricating enzyme electrodes . TiO 2 nanoarrays have been investigated as an electrode material for photochemical and electrochemical applications . Previous work proved that unhybridized TiO 2 NTA could be used as an electrode supporting material for the construction of glucose biosensors .…”

Section: Introductionmentioning

confidence: 99%

“…12,13 TiO 2 nanoarrays have been investigated as an electrode material for photochemical and electrochemical applications. 14,15 Previous work proved that unhybridized TiO 2 NTA could be used as an electrode supporting material for the construction of glucose biosensors. 16 Other glucose biosensors based on modified TiO 2 NTA have also been reported.…”

Section: Introductionmentioning

confidence: 99%

Bioelectrocatalytic performance of glucose oxidase/nitrogen-doped titania nanotube array enzyme electrode

Xie

Wang

2015

J. Chem. Technol. Biotechnol.

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BACKGROUND The substrate materials of enzyme electrodes strongly affect bioelectrocatalytic activity. TiO2 nanotube arrays (NTAs) show good affinity to glucose oxidase (GOx) but low conductivity. TiN NTAs show good conductivity but low affinity to GOx. Nitrogen‐doped TiO2 (N‐TiO2) NTA with good hydrophilicity and conductivity was designed to prepare a GOx/N‐TiO2 NTA enzyme electrode to promote bioelectrocatalytic performance. RESULTS N‐TiO2 NTA had a well‐ordered nanoarray structure with slightly distorted pore mouth and wrinkled nanotube wall. N‐TiO2 NTA exhibited decreased charge transfer resistance and similar contact angle to TiO2 NTA, presenting high electrical conductivity and good hydrophilicity. GOx/N‐TiO2 NTA exhibited highly increased current response at a potential of −0.45 V, presenting good bioelectrocatalysis towards glucose. A GOx/N‐TiO2 NTA enzyme electrode was used to fabricate a glucose biosensor, showing a high sensitivity of 733.17 µA mM−1 cm−2 and a linear range of 0.05–0.85 mmol L−1 and low detection limit of 2.9 µmol L−1 for glucose determination. It exhibited high selectivity in the presence of common interfering substances and was used to determine glucose in serum. It also had good reproducibility and long‐time storage stability. In addition, the GOx/N‐TiO2 NTA enzyme electrode was used to fabricate a glucose fuel cell, showing maximum power density of 23.92 µW cm−2 as well as good bioelectrocatalytic stability. CONCLUSION High bioelectrocatalytic activity and stability of GOx/N‐TiO2 NTA proved that N‐TiO2 NTA could act as a reasonable supporting substrate material for enzyme electrodes for various bioelectrocatalytic applications. © 2015 Society of Chemical Industry

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SERS performance of graphene oxide decorated silver nanoparticle/titania nanotube array

Abstract: A schematic illustrates the preparation of recyclable GO/Ag/TiO2 NTA substrate keeping both active SERS detection and photocatalytic self-cleaning properties.

Cited by 57 publications

References 56 publications

Nano nickel oxide coated graphene/polyaniline composite film with high electrochemical performance for flexible supercapacitor

Nano nickel oxide coated graphene/polyaniline composite film with high electrochemical performance for flexible supercapacitor

Visible‐light‐driven self‐cleaning SERS substrate of silver nanoparticles and graphene oxide decorated nitrogen‐doped titania nanotube array

Bioelectrocatalytic performance of glucose oxidase/nitrogen-doped titania nanotube array enzyme electrode

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