TiO2-graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(II) and Cd(II) detection

Hongfen Zhang; Shaomin Shuang; Guizhen Wang; Yujing Guo; Xili Tong; Peng Yang; Anjia Chen; Chuan Dong; Yong Qin

doi:10.1039/c4ra09779c

TiO₂-graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(II) and Cd(II) detection

Hongfen Zhang
, Shaomin Shuang
, Guizhen Wang
, Yujing Guo
, Xili Tong
, Peng Yang
, Anjia Chen
, Chuan Dong
, Yong Qin

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

In this work, atomic layer deposition is applied to coat graphene nanosheets with TiO₂. The produced TiO₂-graphene (TiO₂-Gr) composites are characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. It is revealed that TiO₂ is effectively deposited on the surface of graphene. The coatings have a highly controlled thickness. The electrochemical properties of the obtained TiO₂-Gr composites are investigated for detection of lead (Pb²⁺) and cadmium (Cd²⁺) ions by differential pulse anodic stripping voltammetry (DPASV). It is found that the TiO₂-Gr composite exhibits improved sensitivity for detection of these metal ions. The linear dynamic ranges are from 1.0 × 10^-8 M to 3.2 × 10^-5 M for Pb²⁺ and 6.0 × 10^-7 M to 3.2 × 10^-5 M for Cd²⁺, respectively. The detection limits (S/N = 3) are estimated to be 1.0 × 10^-10 M for Pb²⁺ and 2.0 × 10^-9 M for Cd²⁺, respectively.

Original language	English
Pages (from-to)	4343-4349
Number of pages	7
Journal	RSC Advances
Volume	5
Issue number	6
DOIs	https://doi.org/10.1039/c4ra09779c
State	Published - 2015
Externally published	Yes

Access to Document

10.1039/c4ra09779c

Cite this

@article{bb0cf91784404a15b2f728d1a37feb1d,

title = "TiO2-graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(II) and Cd(II) detection",

abstract = "In this work, atomic layer deposition is applied to coat graphene nanosheets with TiO2. The produced TiO2-graphene (TiO2-Gr) composites are characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. It is revealed that TiO2 is effectively deposited on the surface of graphene. The coatings have a highly controlled thickness. The electrochemical properties of the obtained TiO2-Gr composites are investigated for detection of lead (Pb2+) and cadmium (Cd2+) ions by differential pulse anodic stripping voltammetry (DPASV). It is found that the TiO2-Gr composite exhibits improved sensitivity for detection of these metal ions. The linear dynamic ranges are from 1.0 × 10-8 M to 3.2 × 10-5 M for Pb2+ and 6.0 × 10-7 M to 3.2 × 10-5 M for Cd2+, respectively. The detection limits (S/N = 3) are estimated to be 1.0 × 10-10 M for Pb2+ and 2.0 × 10-9 M for Cd2+, respectively.",

author = "Hongfen Zhang and Shaomin Shuang and Guizhen Wang and Yujing Guo and Xili Tong and Peng Yang and Anjia Chen and Chuan Dong and Yong Qin",

note = "Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2015.",

year = "2015",

doi = "10.1039/c4ra09779c",

language = "英语",

volume = "5",

pages = "4343--4349",

journal = "RSC Advances",

issn = "2046-2069",

publisher = "Royal Society of Chemistry",

number = "6",

}

TY - JOUR

T1 - TiO2-graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(II) and Cd(II) detection

AU - Zhang, Hongfen

AU - Shuang, Shaomin

AU - Wang, Guizhen

AU - Guo, Yujing

AU - Tong, Xili

AU - Yang, Peng

AU - Chen, Anjia

AU - Dong, Chuan

AU - Qin, Yong

PY - 2015

Y1 - 2015

N2 - In this work, atomic layer deposition is applied to coat graphene nanosheets with TiO2. The produced TiO2-graphene (TiO2-Gr) composites are characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. It is revealed that TiO2 is effectively deposited on the surface of graphene. The coatings have a highly controlled thickness. The electrochemical properties of the obtained TiO2-Gr composites are investigated for detection of lead (Pb2+) and cadmium (Cd2+) ions by differential pulse anodic stripping voltammetry (DPASV). It is found that the TiO2-Gr composite exhibits improved sensitivity for detection of these metal ions. The linear dynamic ranges are from 1.0 × 10-8 M to 3.2 × 10-5 M for Pb2+ and 6.0 × 10-7 M to 3.2 × 10-5 M for Cd2+, respectively. The detection limits (S/N = 3) are estimated to be 1.0 × 10-10 M for Pb2+ and 2.0 × 10-9 M for Cd2+, respectively.

AB - In this work, atomic layer deposition is applied to coat graphene nanosheets with TiO2. The produced TiO2-graphene (TiO2-Gr) composites are characterized by X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and transmission electron microscopy. It is revealed that TiO2 is effectively deposited on the surface of graphene. The coatings have a highly controlled thickness. The electrochemical properties of the obtained TiO2-Gr composites are investigated for detection of lead (Pb2+) and cadmium (Cd2+) ions by differential pulse anodic stripping voltammetry (DPASV). It is found that the TiO2-Gr composite exhibits improved sensitivity for detection of these metal ions. The linear dynamic ranges are from 1.0 × 10-8 M to 3.2 × 10-5 M for Pb2+ and 6.0 × 10-7 M to 3.2 × 10-5 M for Cd2+, respectively. The detection limits (S/N = 3) are estimated to be 1.0 × 10-10 M for Pb2+ and 2.0 × 10-9 M for Cd2+, respectively.

UR - https://www.scopus.com/pages/publications/84919682719

U2 - 10.1039/c4ra09779c

DO - 10.1039/c4ra09779c

M3 - 文章

AN - SCOPUS:84919682719

SN - 2046-2069

VL - 5

SP - 4343

EP - 4349

JO - RSC Advances

JF - RSC Advances

IS - 6

ER -

TiO₂-graphene hybrid nanostructures by atomic layer deposition with enhanced electrochemical performance for Pb(II) and Cd(II) detection

Abstract

Access to Document

Other files and links

Fingerprint

Cite this