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Umejuru E, Prabakaran E, Pillay K. Coal Fly Ash Decorated with Graphene and Polyaniline Nanocomposites for Effective Adsorption of Hexavalent Chromium and Its Reuse for Photocatalysis. ACS OMEGA 2023; 8:17523-17537. [PMID: 37251125 PMCID: PMC10210218 DOI: 10.1021/acsomega.2c05352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 12/06/2022] [Indexed: 05/31/2023]
Abstract
Coal fly ash was functionalized and modified with graphene oxide and polyaniline (CFA/GO/PANI nanocomposite) through hydrothermal synthesis, which was used for remediation of hexavalent chromium (Cr(VI)) ions. Batch adsorption experiments were carried out to investigate the effects of adsorbent dosage, pH, and contact time on the removal of Cr(VI). The ideal pH for this work was 2, and it was used for all other studies. The Cr(VI)-loaded spent adsorbent CFA/GO/PANI + Cr(VI) was reused as a photocatalyst for the degradation of bisphenol A (BPA). The CFA/GO/PANI nanocomposite removed Cr(VI) ions rapidly. The adsorption process was best described by pseudo-second-order kinetics and the Freundlich isotherm model. The CFA/GO/PANI nanocomposite demonstrated a high adsorption capacity of 124.72 mg/g for Cr(VI) removal. In addition, the Cr(VI)-loaded spent adsorbent played a significant role in the photocatalytic degradation of BPA with 86% degradation. The reuse of the Cr(VI)-loaded spent adsorbent as a photocatalyst presents a new solution for the reduction of secondary waste from the adsorption process.
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Kamalabadi M, Ghoorchian A, Derakhshandeh K, Gholyaf M, Ravan M. Design and Fabrication of a Gas Sensor Based on a Polypyrrole/Silver Nanoparticle Film for the Detection of Ammonia in Exhaled Breath of COVID-19 Patients Suffering from Acute Kidney Injury. Anal Chem 2022; 94:16290-16298. [DOI: 10.1021/acs.analchem.2c02760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Mahdie Kamalabadi
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
| | - Arash Ghoorchian
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
| | - Katayoun Derakhshandeh
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
| | - Mahmoud Gholyaf
- Urology & Nephrology Research Center, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
| | - Maryam Ravan
- Department of Pharmaceutics, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan 6517838736, Iran
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Hong SZ, Huang QY, Wu TM. The Room Temperature Highly Sensitive Ammonia Gas Sensor Based on Polyaniline and Nitrogen-Doped Graphene Quantum Dot-Coated Hollow Indium Oxide Nanofiber Composite. Polymers (Basel) 2021; 13:polym13213676. [PMID: 34771232 PMCID: PMC8587219 DOI: 10.3390/polym13213676] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/13/2021] [Accepted: 10/19/2021] [Indexed: 11/16/2022] Open
Abstract
Hollow indium trioxide (In2O3) nanofibers fabricated via an effectively combined method of electrospinning and high-temperature calcination were coated with nitrogen-doped graphene quantum dots (N-GQDs) prepared by a hydrothermal process through electrostatic interaction. The N-GQD-coated hollow In2O3 nanofibers served as a core for the synthesis of polyaniline (PANI)/N-GQD/hollow In2O3 nanofiber ternary composites using in situ chemical oxidative polymerization. The chemical structure and morphology of the fabricated ternary composites were characterized using Fourier transform infrared, field-emission scanning electron microscopy, and transmission electron microscopy. The gas-sensing performances of the ternary composites were estimated by a homemade dynamic test system which was supplied with a real-time resistance acquisition platform at room temperature. The response value of the PANI/N-GQD/hollow In2O3 nanofiber sensor with a loading of 20 wt% N-GQD-coated hollow In2O3 nanofiber and an exposure of 1 ppm NH3 was 15.2, which was approximately more than 4.4 times higher than that of the PANI sensor. This ternary composite sensor was proved to be very sensitive in the detection of NH3 at a range of concentration between 0.6 ppm and 2.0 ppm at room temperature, which is crucial in the detection of hepatic or kidney disease in human breath. The PANI/N-GQD/hollow In2O3 nanofiber sensor also revealed higher selectivity and repeatability when exposed to 1.0 and 2.0 ppm NH3 at room temperature. Because of the excellent selectivity and repeatability in the detection of 1.0 and 2.0 ppm NH3 at room temperature achieved in this study, it is considered that the PANI/N-GQD/hollow In2O3 nanofiber composite sensor will be a favored gas-sensing material applied on human breath for the detection of hepatic or kidney disease.
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Javadian-Saraf A, Hosseini E, Wiltshire BD, Zarifi MH, Arjmand M. Graphene oxide/polyaniline-based microwave split-ring resonator: A versatile platform towards ammonia sensing. JOURNAL OF HAZARDOUS MATERIALS 2021; 418:126283. [PMID: 34116273 DOI: 10.1016/j.jhazmat.2021.126283] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/25/2021] [Accepted: 05/29/2021] [Indexed: 06/12/2023]
Abstract
Ammonia gas sensors have always received significant attention as robust platforms for emission control, food safety, and monitoring human exhaled breath for the early diagnosis of diseases such as dysfunction of the kidney and liver. This study explores the development of a microwave-based split-ring resonator (SRR) sensor with enhanced sensitivity to detect ammonia gas at low concentrations. The sensor is based on a nanocomposite fabricated by incorporating 10 wt% of graphene oxide (GO) into polyaniline (PANI) via the in-situ polymerization of aniline monomers over the surface of the GO sheets. The addition of GO to PANI results in a high sensitivity of 0.038 dB ppm-1 for low concentrations (1-25 ppm) and 0.0045 dB ppm-1 for high concentrations (> 25 ppm) of ammonia gas, in a 150-400 s time interval at room temperature. The prepared sensor can selectively sense ammonia gas in the presence of other higher concentrations of hazardous gases and a wide range of relative humidity levels (15-90%). The response signal is repeatable after 30 days with less than 0.32% deviation. The developed low-cost and robust sensor has the potential to monitor ammonia gas in various applications, including medical, environmental, food, and agricultural sectors.
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Affiliation(s)
- Aida Javadian-Saraf
- Okanagan Microelectronics and Gigahertz Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada; Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Ehsan Hosseini
- Okanagan Microelectronics and Gigahertz Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada; Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Benjamin Daniel Wiltshire
- Okanagan Microelectronics and Gigahertz Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada
| | - Mohammad H Zarifi
- Okanagan Microelectronics and Gigahertz Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada.
| | - Mohammad Arjmand
- Nanomaterials and Polymer Nanocomposites Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1V7, Canada.
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Shahmoradi A, Hosseini A, Akbarinejad A, Alizadeh N. Noninvasive Detection of Ammonia in the Breath of Hemodialysis Patients Using a Highly Sensitive Ammonia Sensor Based on a Polypyrrole/Sulfonated Graphene Nanocomposite. Anal Chem 2021; 93:6706-6714. [PMID: 33881307 DOI: 10.1021/acs.analchem.1c00171] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
In this work, we fabricated fast-responsive and highly sensitive chemiresistive sensors based on nanocomposites of polypyrrole and graphitic materials such as graphene oxide (GO), reduced graphene oxide (RGO), and sulfonated graphene (SRGO) by an in situ chemical oxidative polymerization method. The synthesized nanocomposites were characterized using field emission scanning electron microscopy (FESEM), energy-dispersive spectroscopy (EDS), Fourier transform infrared (FT-IR) spectroscopy, and X-ray diffraction (XRD). The effects of the operating temperature of different nanocomposites were investigated at four temperatures (28, 40, 50, and 60 °C), and the results were compared with that of the polypyrrole-based sensor. The experimental results for sensors indicate that the proposed PPy/SRGO sensor could be an appropriate choice for NH3 detection at 28 °C in the range of 0.50 parts per billion (ppb) to 12 parts per million (ppm). The PPy/SRGO nanocomposite gas sensor exhibited fast responsivity, good repeatability, and high chemical selectivity to low-concentration ammonia against humidity, methanol, ethanol, acetone, formaldehyde, dibutylamine, dimethylamine, methylamine, carbon monoxide, and nitrogen oxide at 28 °C. We utilized the PPy/SRGO sensor for studying the variation of the ammonia concentration in hemodialysis (HD) patients' breath before and after dialysis and correlated it with the blood urea nitrogen (BUN) levels. The results of the PPy/SRGO sensor indicated that the breath ammonia concentration significantly decreased after dialysis in agreement with BUN. The results demonstrate the potential application of the PPy/SRGO sensor for noninvasive detection of ammonia in breath and make this type of sensor a promising tool for the diagnosis of renal and liver diseases.
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Affiliation(s)
- Atefeh Shahmoradi
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Abolghasem Hosseini
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran
| | - Alireza Akbarinejad
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.,Polymer Biointerface Centre, School of Chemical Sciences, University of Auckland, Auckland 1010, New Zealand
| | - Naader Alizadeh
- Department of Chemistry, Faculty of Basic Sciences, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.,Faculty of Interdisciplinary Science and Technology, Tarbiat Modares University, Tehran, Iran
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Liu B, Zhang X, Tian D, Li Q, Zhong M, Chen S, Hu C, Ji H. In Situ Growth of Oriented Polyaniline Nanorod Arrays on the Graphite Flake for High-Performance Supercapacitors. ACS OMEGA 2020; 5:32395-32402. [PMID: 33376876 PMCID: PMC7758985 DOI: 10.1021/acsomega.0c04212] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Accepted: 11/02/2020] [Indexed: 06/12/2023]
Abstract
Polyaniline with oriented nanorod arrays could provide high surface area and relaxed nanostructure to optimize ion diffusion paths, thus enhancing the performance of the device. In this paper, we designed an all-solid symmetrical supercapacitor with good performance based on polyaniline nanorod arrays in situ-grown on a graphite flake free-standing substrate. The specific capacitance, cycle stability, and energy density of the prepared supercapacitor device were 135 F/g, 75.4% retention after 1500 cycles, and the energy density is 18.75 W h/kg at a power density of 500 W/kg. The good performance of the supercapacitor device was obviously related to the oriented nanorod arrays of polyaniline/graphite flakes. In order to find the application of the prepared supercapacitor device, the tandem device consisting of three single supercapacitor devices connected in series had been used to drive small electronic equipment. The red light-emitting diode and chronograph could be easily driven by the 3-series supercapacitor devices. These results indicated that the prepared supercapacitor device based on the polyaniline/graphite flake electrode had potential applications in energy storage devices.
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Affiliation(s)
- Ben Liu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Xingying Zhang
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Du Tian
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Qi Li
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Min Zhong
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Shaoyun Chen
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Chenglong Hu
- Key
Laboratory of Optoelectronic Chemical Materials and Devices, Ministry
of Education, School of Chemical and Environmental Engineering, Jianghan University, Wuhan 430056, China
| | - Hongbing Ji
- Fine
Chemical Industry Research Institute, School of Chemistry, Sun Yat-sen University, Guangzhou 510275, Guangdong, China
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7
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Tohidi S, Parhizkar M, Bidadi H, Mohamad-Rezaei R. High-performance chemiresistor-type NH 3 gas sensor based on three-dimensional reduced graphene oxide/polyaniline hybrid. NANOTECHNOLOGY 2020; 31:415501. [PMID: 32554894 DOI: 10.1088/1361-6528/ab9daa] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In this study, a novel gas sensor is proposed based on a three-dimensional reduced graphene oxide/polyaniline (3D RGO/PANI) hybrid, which is synthesized by a hydrothermal method for detecting NH3 gas at room temperature. The 3D RGO/PANI hybrid is characterized by field emission-scanning electron microscopy, Fourier transform infrared and x-ray diffraction. The specific surface area is analyzed using the Brunauer-Emmett-Teller (BET) equation. The as-synthesized sensing materials with an appropriate amount of polyaniline nanowires (PANI-NWs) can effectively prevent aggregation of the neighboring graphene sheets and directly act as adsorption sites for NH3 molecules. In comparison with its pure 3D RGO counterpart, the 3D RGO/PANI (1:1) hybrid exhibits 44.7 times enhanced response to 100 ppm NH3, suggesting the remarkable effect of PANI-NWs in improving the sensitivity. This work gives new insights into boosting the sensitivity and selectivity of detecting NH3 gas by incorporating PANI-NWs into 3D RGO.
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Affiliation(s)
- Somayeh Tohidi
- Department of Condensed Matter Physics, Faculty of Physics, University of Tabriz, Imam St., 29 Bahman Blvd., Tabriz, Iran
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Graboski AM, Zakrzevski CA, Shimizu FM, Paschoalin RT, Soares AC, Steffens J, Paroul N, Steffens C. Electronic Nose Based on Carbon Nanocomposite Sensors for Clove Essential Oil Detection. ACS Sens 2020; 5:1814-1821. [PMID: 32515185 DOI: 10.1021/acssensors.0c00636] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
This work describes the development of an electronic nose (e-nose) based on carbon nanocomposites to detect clove essential oil (CEO), eugenol (EUG), and eugenyl acetate (EUG.ACET). Our e-nose system comprises an array of six sensing units modified with nanocomposites of poly(aniline), graphene oxide, and multiwalled carbon nanotubes doped with different acids, dodecyl benzene sulfonic acid, camphorsulfonic acid, and hydrochloric acid. The e-nose presented an excellent analytical performance to the detected analytes (CEO, EUG, and EUG.ACET) with high sensitivity and reversibility. The limit of detection was lower than 1.045 ppb, with response time (<13.26 s) and recovery time (<106.29 s) and low hysteresis. Information visualization methods (PCA and IDMAP) demonstrated that the e-nose was efficient to discriminate the different concentrations of analyte volatile oil compounds. PM-IRRAS measurements suggest that the doping mechanism of molecular architectures is composed of a change in the oscillation energy of the characteristic dipoles and changes in the molecular orientation dipoles C═C and C═O at 1615 and 1740 cm-1, respectively. The experimental results indicate that our e-nose system is promising for a rapid analysis method to monitor the quality of essential oils.
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Affiliation(s)
- Adriana M. Graboski
- Food Engineering, URI—Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, Rio Grande do Sul, Brazil
| | - Claudio A. Zakrzevski
- Food Engineering, URI—Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, Rio Grande do Sul, Brazil
| | - Flavio M. Shimizu
- São Carlos Institute of Physics, University of São Paulo (USP), P.O. Box 369, 13566-590 São Carlos, São Paulo, Brazil
| | - Rafaella T. Paschoalin
- São Carlos Institute of Physics, University of São Paulo (USP), P.O. Box 369, 13566-590 São Carlos, São Paulo, Brazil
| | - Andrey C. Soares
- Nanotechnology National Laboratory for Agribusiness (LNNA), Embrapa Instrumentation, 13560-970 São Carlos, São Paulo, Brazil
| | - Juliana Steffens
- Food Engineering, URI—Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, Rio Grande do Sul, Brazil
| | - Natalia Paroul
- Food Engineering, URI—Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, Rio Grande do Sul, Brazil
| | - Clarice Steffens
- Food Engineering, URI—Erechim, Av. Sete de Setembro 1621, 99709-910 Erechim, Rio Grande do Sul, Brazil
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Eskandari M, García CA, Buceta D, Malekfar R, Taboada P. NiCo2O4/MWCNT/PANI coral-like nanostructured composite for electrochemical energy-storage applications. J Electroanal Chem (Lausanne) 2019. [DOI: 10.1016/j.jelechem.2019.113481] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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10
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Gong Y, Li H, Pei W, Fan J, Umar A, Al-Assiri MS, Wang Y, Frans de Rooij N, Zhou G. Assembly with copper(ii) ions and D–π–A molecules on a graphene surface for ultra-fast acetic acid sensing at room temperature. RSC Adv 2019; 9:30432-30438. [PMID: 35530241 PMCID: PMC9073372 DOI: 10.1039/c9ra05706d] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2019] [Accepted: 09/11/2019] [Indexed: 02/03/2023] Open
Abstract
The as-prepared 4HQ-rGO/Cu2+ sensor possessed a high response, outstanding selectivity and fast response-recovery characteristic, which was mainly attributed to the supramolecularly assemble of 4-hydroxyquinoline, and Cu2+ with graphene nanosheets.
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Affiliation(s)
- Yelei Gong
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
| | - Hao Li
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
| | - Wenle Pei
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education
- School of Chemistry
- Beihang University
- Beijing 100191
- P. R. China
| | - Jincheng Fan
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
| | - Ahmad Umar
- Promising Centre for Sensors and Electronic Devices
- Najran University
- Najran 11001
- Kingdom of Saudi Arabia
| | - M. S. Al-Assiri
- Promising Centre for Sensors and Electronic Devices
- Najran University
- Najran 11001
- Kingdom of Saudi Arabia
- Department of Chemistry
| | - Yao Wang
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
| | - Nicolaas Frans de Rooij
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
| | - Guofu Zhou
- Guangdong Provincial Key Laboratory of Optical Information Materials and Technology
- Institute of Electronic Paper Displays
- South China Academy of Advanced Optoelectronics
- South China Normal University
- Guangzhou 510006
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11
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Wang B, Wang X, Li X, Guo Z, Zhou X, Wu Y. The effects of amino substituents on the enhanced ammonia sensing performance of PcCo/rGO hybrids. RSC Adv 2018; 8:41280-41287. [PMID: 35559332 PMCID: PMC9091620 DOI: 10.1039/c8ra07509c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2018] [Accepted: 12/01/2018] [Indexed: 11/21/2022] Open
Abstract
Three reversible ammonia (NH3) gas sensors were fabricated using tetra-α-(p-aminobenzyloxy)phthalocyanine cobalt (ABOPcCo), tetra-α-aminophthalocyanine cobalt (APcCo) and substituent-free phthalocyanine cobalt (FPcCo) functionalized reduced graphene oxide (rGO), with cost-efficient, highly sensitive and stable sensing performance. These hybrid materials were prepared via a facile physical solution mixing self-assembly reaction with rGO and PcCo solutions. The obtained PcCo/rGO hybrid sensors exhibit excellent sensing performance; especially the ABOPcCo/rGO sensor, whose response is about 23.3% (50 ppm), with a limit of detection as low as 78 ppb, and response and recovery times about as fast as 225 s and 250 s. The performance of the PcCo/rGO hybrid sensors can be optimized by adjusting the concentrations of the PcCo/rGO aqueous dispersions. More importantly, the NH3-sensing performance of the PcCo/rGO sensors was tuned by adjusting the substituent structure of PcCo. The enhanced NH3-sensing performance may be attributed to synergistic effects between PcCo and rGO, e.g., stronger adsorption interactions between PcCo with an aminophenoxy substituent and NH3, the high electrical conductivity of rGO, and fast charge transfer between PcCo and rGO. These are further confirmed via first-principle density functional theory (DFT) calculations and electrochemical impedance spectra (EIS) measurements.
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Affiliation(s)
- Bin Wang
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University Harbin 150080 P. R. China
| | - Xiaolin Wang
- School of Material and Chemical Engineering, Heilongjiang Institute of Technology Harbin 150050 P. R. China
| | - Xiaocheng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University Harbin 150080 P. R. China
| | - Zhijiang Guo
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University Harbin 150080 P. R. China
| | - Xin Zhou
- MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage, School of Chemistry and Chemical Engineering, Harbin Institute of Technology Harbin P. R. China
| | - Yiqun Wu
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University Harbin 150080 P. R. China
- Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences Shanghai 201800 P. R. China
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12
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Tuerdi G, Nizamidin P, Kari N, Yimit A, Wang F. Optochemical properties of gas-phase protonated tetraphenylporphyrin investigated using an optical waveguide NH 3 sensor. RSC Adv 2018; 8:5614-5621. [PMID: 35542428 PMCID: PMC9078192 DOI: 10.1039/c7ra11643h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 01/28/2018] [Indexed: 11/21/2022] Open
Abstract
5,10,15,20-Tetraphenylporphyrin (TPP) was synthesized, and a glass optical waveguide (OWG, which restricts and maintains the light energy in a specific, narrow space and propagates along the space axially) was coated with a gas-phase protonated TPP thin film to develop a sensor for NH3 gas detection. The results show that the TPP thin film agglomerated into H-based J-type aggregates after H2S gas exposure. The molecules in the protonated TPP film OWG sensor acted as NH3 receptors because the gas-phase protonated TPP film morphologically changed from J-type aggregates into free-base monomers when it was deprotonated by NH3 exposure. In this case, H2S gas could be used to increase the relative amount of J-type aggregates in the TPP film and restore the sensor response. The reversible surface morphology of the TPP film was analyzed by 1H NMR spectroscopy, atomic force microscopy, and UV-vis spectroscopy.
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Affiliation(s)
- Gulimire Tuerdi
- College of Chemistry and Chemical Engineering, Xinjiang University Urumqi 830046 China +86-991-8580191 +86-991-8580191
| | - Patima Nizamidin
- College of Chemistry and Chemical Engineering, Xinjiang University Urumqi 830046 China +86-991-8580191 +86-991-8580191
| | - Nuerguli Kari
- College of Chemistry and Chemical Engineering, Xinjiang University Urumqi 830046 China +86-991-8580191 +86-991-8580191
| | - Abliz Yimit
- College of Chemistry and Chemical Engineering, Xinjiang University Urumqi 830046 China +86-991-8580191 +86-991-8580191
| | - Fu Wang
- Laboratory of Environmental Sciences and Technology, Xinjiang Technical Institute of Physics & Chemistry, Key Laboratory of Functional Materials and Devices for Special Environments, Chinese Academy of Sciences Urumqi 830011 China
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