TY - JOUR
T1 - Synthesis of 3D mesoporous samarium oxide hydrangea microspheres for enzyme-free sensor of hydrogen peroxide
AU - Yan, Yibo
AU - Li, Kaixin
AU - Dai, Yihu
AU - Chen, Xiaoping
AU - Zhao, Jun
AU - Yang, Yanhui
AU - Lee, Jong Min
N1 - Funding Information (Section snippets):
This investigation is supported by the National Research Foundation (NRF), Prime Minister’s Office, Singapore under its Campus for Research Excellence and Technological Enterprise (CREATE) program, as well as the AcRF Tier 1 grant (RGT27/13), Ministry of Education, Singapore.
Publisher Copyright:
© 2016 Elsevier Ltd. All rights reserved.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - A novel 3D mesoporous Sm2O3 hierarchical hydrangea microspheres sensor has been developed and investigated for highly sensitive electrochemical detection of hydrogen peroxide (H2O2). Their morphology and structure were observed by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) isotherms and the Barret-Joyner-Halenda (BJH) measurements. This stable non-enzymatic sensor was found to capable of implementing H2O2 detection in a wide linear range from 1 to 320 μM with a linear correlation coefficient (R) of 0.997. It presents an ultrahigh sensitivity of 20.5 μA mM-1, a remarkably low detection limit of ∼1 μM (signal/noise = 4), as well as a prompt response attaining 95% of steady current within 3 s. As such, the Sm2O3 hierarchical hydrangea microspheres are considered one of the remarkably prominent sensors for the detection of hydrogen peroxide in biological diagnosis, food and environmental monitoring.
AB - A novel 3D mesoporous Sm2O3 hierarchical hydrangea microspheres sensor has been developed and investigated for highly sensitive electrochemical detection of hydrogen peroxide (H2O2). Their morphology and structure were observed by field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) isotherms and the Barret-Joyner-Halenda (BJH) measurements. This stable non-enzymatic sensor was found to capable of implementing H2O2 detection in a wide linear range from 1 to 320 μM with a linear correlation coefficient (R) of 0.997. It presents an ultrahigh sensitivity of 20.5 μA mM-1, a remarkably low detection limit of ∼1 μM (signal/noise = 4), as well as a prompt response attaining 95% of steady current within 3 s. As such, the Sm2O3 hierarchical hydrangea microspheres are considered one of the remarkably prominent sensors for the detection of hydrogen peroxide in biological diagnosis, food and environmental monitoring.
KW - 3D mesoporous Sm2O3 hydrangea microspheres
KW - electrochemical detection
KW - enzyme-free detection
KW - hydrogen peroxide sensor
UR - http://www.scopus.com/inward/record.url?scp=84969497951&partnerID=8YFLogxK
U2 - 10.1016/j.electacta.2016.05.037
DO - 10.1016/j.electacta.2016.05.037
M3 - Journal article
AN - SCOPUS:84969497951
SN - 0013-4686
VL - 208
SP - 231
EP - 237
JO - Electrochimica Acta
JF - Electrochimica Acta
ER -