Ali A. Ensafi | Isfahan University of Technology (original) (raw)

Ali A. Ensafi

Prof. Ali A. Ensafi was graduated in Analytical Chemistry (Ph.D.) in 1991 from Shiraz University (Iran). Then, he joined the Department of Chemistry at Isfahan University of Technology (Iran). He became a full professor in 2001 at Isfahan University of Technology.
He was at the University of Waterloo (Canada) during 1999-2000 and at the University of Arkansas (USA) during 2007-2008 as a visiting professor.
He is Head of Center of Excellence in Sensors & Green Chemistry of Ministry of Sciences, Research & Technology of Iran, and Head of Department of Chemistry in Isfahan University of Technology, Iran.
He has an H-index of 68 and has published more than 510 ISI papers, and he has more than 150 international and/or national oral presentations. He has been awarded more than fifteen national and three international awards. He is co-authors of more than eight books (Academic Press & Springer publishers), editor of “Electrochemical Biosensors, Elsevier,” associate editor of Journal of the Iranian Chemical Society (Springer publisher), and Editorial Board of 15 International Scientific Journals.
Prof. Ensafi is the top 1% Scientist in Chemistry in Thomson Routers, Essential Science Indicators. His research program is developing sensors and biosensors (based on electrochemical and spectroscopic methods) and new energy source based-nanomaterials for fuel cells, supercapacitors, and storage energy.
Phone: 09131123280
Address: Department of Chemistry, Isfahan University of Technology, Isfahan, Iran

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Papers by Ali A. Ensafi

Research paper thumbnail of A review of the incorporation of QDs and imprinting technology in optical sensors – imprinting methods and sensing responses

New Journal of Chemistry

This review aims to cover the simultaneous method of using molecularly imprinted technology and q... more This review aims to cover the simultaneous method of using molecularly imprinted technology and quantum dots (QDs) as well as its application in the field of optical sensors.

Research paper thumbnail of MWCNT-mesoporous silica nanocomposites inserted in a polyhedral metal–organic framework as an advanced hybrid material for energy storage device

New Journal of Chemistry

Hybridizing of trimetallic HKUST-1 with mesoporous SBA/CNT is highly desirable fot the improvemen... more Hybridizing of trimetallic HKUST-1 with mesoporous SBA/CNT is highly desirable fot the improvement of energy and power densities in supercapacitors.

Research paper thumbnail of A Novel Non‐enzymatic Selective and Sensitive Glucose Sensor Based on Nickel‐Copper Oxide@3D‐rGO/MWCNTs

Research paper thumbnail of Metal–organic framework derived metal oxide/reduced graphene oxide nanocomposite, a new tool for the determination of dipyridamole

New Journal of Chemistry

NICo2O4/NIO@MOF-5 rGO can detect dipyridamole at trace levels with high selectivity and sensitivity.

Research paper thumbnail of Cover Picture: Fabrication of Electrochemical Sensor Based on CeO 2 −SnO 2 Nanocomposite Loaded on Pd Support for Determination of Nitrite at Trace Levels (Electroanalysis 5/2020)

Research paper thumbnail of Electrochemical Sensing of Flutamide Contained in Plasma and Urine Matrices Using NiFe2O4/rGO Nanocomposite, as an Efficient and Selective Electrocatalyst

Research paper thumbnail of Ni3S2 Supported on Porous Ball-Milled Silicon, A Highly Selective Electrochemical Sensor for Glucose Determination

Research paper thumbnail of Fabrication of Electrochemical Sensor Based on CeO 2 −SnO 2 Nanocomposite Loaded on Pd Support for Determination of Nitrite at Trace Levels

Research paper thumbnail of The investigation of Amido black 10B adsorption-photocatalytic degradation using the synergistic effect of Cr-doped ZnO/CDs nanocomposite under solar light

Environmental Science and Pollution Research

Research paper thumbnail of Detection of theophylline using molecularly imprinted polymers based on thioglycolic acid-modified CdTe quantum dots

Journal of the Iranian Chemical Society

Research paper thumbnail of An impedimetric biosensor based on poly(l-lysine)-decorated multiwall carbon nanotubes for the determination of diazinon in water and fruits

Journal of the Iranian Chemical Society

Research paper thumbnail of Thermally reduced graphene oxide/polymelamine formaldehyde nanocomposite as a high specific capacitance electrochemical supercapacitor electrode

Journal of Materials Chemistry A

Thermally rGO/polymelamine formaldehyde nanocomposite shows good behavior as supercapacitor elect... more Thermally rGO/polymelamine formaldehyde nanocomposite shows good behavior as supercapacitor electrode with 2271 F g−1 specific capacitance in 10 A g−1 with excellent stability.

Research paper thumbnail of An optical sensor based on inner filter effect using green synthesized carbon dots and Cu(II) for selective and sensitive penicillamine determination

Journal of the Iranian Chemical Society

Research paper thumbnail of Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified-glassy Carbon Electrode

Research paper thumbnail of MWCNTs/Ionic Liquid/ Graphene Quantum Dots Nanocomposite Coated with Nickel-Cobalt Bimetallic Catalyst as a Highly Selective Non-Enzymatic Sensor for Determination of Glucose

Research paper thumbnail of An impedimetric aptasensor for Shigella dysenteriae using a gold nanoparticle-modified glassy carbon electrode

Research paper thumbnail of Engineering onion-like nanoporous CuCo2O4 hollow spheres derived from bimetal–organic frameworks for high-performance asymmetric supercapacitors

Journal of Materials Chemistry A

An asymmetric supercapacitor fabricated using onion-like nanoporous CuCo2O4 hollow spheres exhibi... more An asymmetric supercapacitor fabricated using onion-like nanoporous CuCo2O4 hollow spheres exhibits an energy density of 48.75 W h kg−1 and a power density of 37.5 kW kg−1, which can compete with Ni–MH batteries.

Research paper thumbnail of Molecularly imprinted electrochemical aptasensor for the attomolar detection of bisphenol A

Mikrochimica acta, Jan 24, 2018

Gold nanoparticles (AuNPs) were electrodeposited on the surface of a glassy carbon electrode (GCE... more Gold nanoparticles (AuNPs) were electrodeposited on the surface of a glassy carbon electrode (GCE) and then treated with a mixture of a thiolated DNA sequence (p-63; with high affinity for bisphenol A) and free bisphenol A (BPÀ). Pyrrole was then electropolymerizaed on the surface of the GCE to entrap the BPA@p-63 complex. BPA is then extracted with acetic acid solution to obtain MIP cavities where the embedded DNA sequence acts as the binding site for BPA. Scanning electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry were employed to characterize the surface of the modified GCE. Under the optimum conditions, the assay has a dynamic range that covers the 0.5 fM to 5 pM BPA concentration range and an 80 aM detection limit. It was applied to the quantitation of BPA in (spiked) milk, milk powder and water samples and gave acceptable recoveries. Graphical Abstract Schematic of the procedure for aptamer-based detection of BPA using unique features of the ap...

Research paper thumbnail of Decoration of nanoporous stainless steel with nanostructured gold via galvanic replacement reaction and its application for electrochemical determination of dopamine

Sensors and Actuators B: Chemical

ABSTRACT A stainless steel substrate with highly ordered self-organized nanopores was decorated w... more ABSTRACT A stainless steel substrate with highly ordered self-organized nanopores was decorated with gold nanostructures (Au/NPSS) for use in electrochemical biosensors. The nanopores were formed on stainless steel surface using anodization process, filled with Cu using pulsed electrodeposition and followed by galvanic replacement of Cu with gold. The characteristics of the electrode and its potential application for electrochemical determination of dopamine (DA) were investigated using scanning electron microscopy, energy-dispersive X-ray spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results indicated that compared to a smooth gold electrode, the nanostructured gold film formed on the NPSS has a great active surface area and displays a higher peak current for DA oxidation. Cyclic voltammetric determination of DA exhibited two wide linear ranges of 3.0–8.0 and 8.0–2000 μM with a detection limit of 0.07 μM (3Sb/m). Moreover, two lines in the range of 1.0–80.0 μM of DA with a limit of detection of 0.02 μM (3Sb/m) were obtained using differential pulse voltammetry. Au/NPSS exhibited good repeatability and reproducibility, long-term stability and acceptable selectivity. This work opens up new prospects for the fabrication of inexpensive noble metal-based catalysts supported on NPSS, which have a potential application in biosensors.

Research paper thumbnail of In situ production of silver nanoparticles for high sensitive detection of ascorbic acid via inner filter effect

Materials science & engineering. C, Materials for biological applications, 2017

In the present research, a sensitive biosensing method was proposed for the detection of trace am... more In the present research, a sensitive biosensing method was proposed for the detection of trace amounts of ascorbic acid (AA). Herein, colloidal silver nanoparticles (SNPs) were successfully in-situ produced by chemical reduction of silver ion in the presence of AA, as a reducing agent. The one-pot in-situ produced silver nanoparticles were characterized by UV-vis, dynamic light scattering (DLS), zeta potential and transmission electron microscopic (TEM). SNPs act as a strong fluorescence quencher for the CdTe quantum dots via an inner filter effect (IFE). Since the absorption band of SNPs entirely covered both emission and excitation bands of QDs. Therefore, the decreasing in the fluorescence signal depends on the AA concentration in the linear range of 0.2-88.0ngmL(-1) and with a detection limit of 0.02ngmL(-1). Relative standard deviations of 2.3% and 2.8% (n=5) were achieved for the determination of 1.8 and 8.8ngmL(-1) AA, respectively. This novel QDs nanosensor based on IFE coul...

Research paper thumbnail of A review of the incorporation of QDs and imprinting technology in optical sensors – imprinting methods and sensing responses

New Journal of Chemistry

This review aims to cover the simultaneous method of using molecularly imprinted technology and q... more This review aims to cover the simultaneous method of using molecularly imprinted technology and quantum dots (QDs) as well as its application in the field of optical sensors.

Research paper thumbnail of MWCNT-mesoporous silica nanocomposites inserted in a polyhedral metal–organic framework as an advanced hybrid material for energy storage device

New Journal of Chemistry

Hybridizing of trimetallic HKUST-1 with mesoporous SBA/CNT is highly desirable fot the improvemen... more Hybridizing of trimetallic HKUST-1 with mesoporous SBA/CNT is highly desirable fot the improvement of energy and power densities in supercapacitors.

Research paper thumbnail of A Novel Non‐enzymatic Selective and Sensitive Glucose Sensor Based on Nickel‐Copper Oxide@3D‐rGO/MWCNTs

Research paper thumbnail of Metal–organic framework derived metal oxide/reduced graphene oxide nanocomposite, a new tool for the determination of dipyridamole

New Journal of Chemistry

NICo2O4/NIO@MOF-5 rGO can detect dipyridamole at trace levels with high selectivity and sensitivity.

Research paper thumbnail of Cover Picture: Fabrication of Electrochemical Sensor Based on CeO 2 −SnO 2 Nanocomposite Loaded on Pd Support for Determination of Nitrite at Trace Levels (Electroanalysis 5/2020)

Research paper thumbnail of Electrochemical Sensing of Flutamide Contained in Plasma and Urine Matrices Using NiFe2O4/rGO Nanocomposite, as an Efficient and Selective Electrocatalyst

Research paper thumbnail of Ni3S2 Supported on Porous Ball-Milled Silicon, A Highly Selective Electrochemical Sensor for Glucose Determination

Research paper thumbnail of Fabrication of Electrochemical Sensor Based on CeO 2 −SnO 2 Nanocomposite Loaded on Pd Support for Determination of Nitrite at Trace Levels

Research paper thumbnail of The investigation of Amido black 10B adsorption-photocatalytic degradation using the synergistic effect of Cr-doped ZnO/CDs nanocomposite under solar light

Environmental Science and Pollution Research

Research paper thumbnail of Detection of theophylline using molecularly imprinted polymers based on thioglycolic acid-modified CdTe quantum dots

Journal of the Iranian Chemical Society

Research paper thumbnail of An impedimetric biosensor based on poly(l-lysine)-decorated multiwall carbon nanotubes for the determination of diazinon in water and fruits

Journal of the Iranian Chemical Society

Research paper thumbnail of Thermally reduced graphene oxide/polymelamine formaldehyde nanocomposite as a high specific capacitance electrochemical supercapacitor electrode

Journal of Materials Chemistry A

Thermally rGO/polymelamine formaldehyde nanocomposite shows good behavior as supercapacitor elect... more Thermally rGO/polymelamine formaldehyde nanocomposite shows good behavior as supercapacitor electrode with 2271 F g−1 specific capacitance in 10 A g−1 with excellent stability.

Research paper thumbnail of An optical sensor based on inner filter effect using green synthesized carbon dots and Cu(II) for selective and sensitive penicillamine determination

Journal of the Iranian Chemical Society

Research paper thumbnail of Electrochemical Determination of Fenitrothion Organophosphorus Pesticide Using Polyzincon Modified-glassy Carbon Electrode

Research paper thumbnail of MWCNTs/Ionic Liquid/ Graphene Quantum Dots Nanocomposite Coated with Nickel-Cobalt Bimetallic Catalyst as a Highly Selective Non-Enzymatic Sensor for Determination of Glucose

Research paper thumbnail of An impedimetric aptasensor for Shigella dysenteriae using a gold nanoparticle-modified glassy carbon electrode

Research paper thumbnail of Engineering onion-like nanoporous CuCo2O4 hollow spheres derived from bimetal–organic frameworks for high-performance asymmetric supercapacitors

Journal of Materials Chemistry A

An asymmetric supercapacitor fabricated using onion-like nanoporous CuCo2O4 hollow spheres exhibi... more An asymmetric supercapacitor fabricated using onion-like nanoporous CuCo2O4 hollow spheres exhibits an energy density of 48.75 W h kg−1 and a power density of 37.5 kW kg−1, which can compete with Ni–MH batteries.

Research paper thumbnail of Molecularly imprinted electrochemical aptasensor for the attomolar detection of bisphenol A

Mikrochimica acta, Jan 24, 2018

Gold nanoparticles (AuNPs) were electrodeposited on the surface of a glassy carbon electrode (GCE... more Gold nanoparticles (AuNPs) were electrodeposited on the surface of a glassy carbon electrode (GCE) and then treated with a mixture of a thiolated DNA sequence (p-63; with high affinity for bisphenol A) and free bisphenol A (BPÀ). Pyrrole was then electropolymerizaed on the surface of the GCE to entrap the BPA@p-63 complex. BPA is then extracted with acetic acid solution to obtain MIP cavities where the embedded DNA sequence acts as the binding site for BPA. Scanning electron microscopy, electrochemical impedance spectroscopy, and cyclic voltammetry were employed to characterize the surface of the modified GCE. Under the optimum conditions, the assay has a dynamic range that covers the 0.5 fM to 5 pM BPA concentration range and an 80 aM detection limit. It was applied to the quantitation of BPA in (spiked) milk, milk powder and water samples and gave acceptable recoveries. Graphical Abstract Schematic of the procedure for aptamer-based detection of BPA using unique features of the ap...

Research paper thumbnail of Decoration of nanoporous stainless steel with nanostructured gold via galvanic replacement reaction and its application for electrochemical determination of dopamine

Sensors and Actuators B: Chemical

ABSTRACT A stainless steel substrate with highly ordered self-organized nanopores was decorated w... more ABSTRACT A stainless steel substrate with highly ordered self-organized nanopores was decorated with gold nanostructures (Au/NPSS) for use in electrochemical biosensors. The nanopores were formed on stainless steel surface using anodization process, filled with Cu using pulsed electrodeposition and followed by galvanic replacement of Cu with gold. The characteristics of the electrode and its potential application for electrochemical determination of dopamine (DA) were investigated using scanning electron microscopy, energy-dispersive X-ray spectroscopy, cyclic voltammetry and electrochemical impedance spectroscopy. The results indicated that compared to a smooth gold electrode, the nanostructured gold film formed on the NPSS has a great active surface area and displays a higher peak current for DA oxidation. Cyclic voltammetric determination of DA exhibited two wide linear ranges of 3.0–8.0 and 8.0–2000 μM with a detection limit of 0.07 μM (3Sb/m). Moreover, two lines in the range of 1.0–80.0 μM of DA with a limit of detection of 0.02 μM (3Sb/m) were obtained using differential pulse voltammetry. Au/NPSS exhibited good repeatability and reproducibility, long-term stability and acceptable selectivity. This work opens up new prospects for the fabrication of inexpensive noble metal-based catalysts supported on NPSS, which have a potential application in biosensors.

Research paper thumbnail of In situ production of silver nanoparticles for high sensitive detection of ascorbic acid via inner filter effect

Materials science & engineering. C, Materials for biological applications, 2017

In the present research, a sensitive biosensing method was proposed for the detection of trace am... more In the present research, a sensitive biosensing method was proposed for the detection of trace amounts of ascorbic acid (AA). Herein, colloidal silver nanoparticles (SNPs) were successfully in-situ produced by chemical reduction of silver ion in the presence of AA, as a reducing agent. The one-pot in-situ produced silver nanoparticles were characterized by UV-vis, dynamic light scattering (DLS), zeta potential and transmission electron microscopic (TEM). SNPs act as a strong fluorescence quencher for the CdTe quantum dots via an inner filter effect (IFE). Since the absorption band of SNPs entirely covered both emission and excitation bands of QDs. Therefore, the decreasing in the fluorescence signal depends on the AA concentration in the linear range of 0.2-88.0ngmL(-1) and with a detection limit of 0.02ngmL(-1). Relative standard deviations of 2.3% and 2.8% (n=5) were achieved for the determination of 1.8 and 8.8ngmL(-1) AA, respectively. This novel QDs nanosensor based on IFE coul...

Research paper thumbnail of Ali A. Ensafi's CV, H-Index: 69

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