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Metto M, Tesfaye A, Atlabachew M, Abebe A, Fentahun T, Munshea A. A Novel Poly(cytosine)-Based Electrochemical Biosensor for Sensitive and Selective Determination of Guanine in Biological Samples. ACS OMEGA 2024; 9:26222-26234. [PMID: 38911807 PMCID: PMC11191103 DOI: 10.1021/acsomega.4c01939] [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: 02/28/2024] [Revised: 05/16/2024] [Accepted: 05/30/2024] [Indexed: 06/25/2024]
Abstract
The novel poly(cytosine)-modified glassy carbon electrode-based electrochemical sensor was fabricated potentiodynamically for the detection of Guanine (G) in clinical and biological samples. The surface of the electrode was successfully activated by electropolymerization, and about a 7.5-fold current improvement due to modification was achieved. From the analysis of the dependence of peak current and peak potential on a scan rate, a higher R 2 for the peak current on the square root of scan rate (R 2 = 0.999) than the dependence of peak current on scan rate (R 2 = 0.982) indicated that the oxidation of G at poly(cytosine)/GCE was predominantly diffusion controlled. The oxidative peak response of the electrode revealed a high linear range of G concentration (0.1-200 μM) under optimized conditions. The detection limit and limit of quantification were 6.10 and 20.13 nM, respectively, associated with the %RSD of under 1%. The validation of the developed electrochemical sensor for the determination of G was investigated by analyzing human urine DNA and serum samples with spike recovery results in the range of 98.20-103.70% with the interferent recovery percentage in the range of 97.86-103.10% containing 50-300% of potential interferents. The newly designed sensor demonstrated the highest level of performance for the G detection in real samples.
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Affiliation(s)
- Melaku Metto
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
- Department
of Chemistry, College of Natural and Computational Sciences, Injibara University, Injibara 6400, Ethiopia
| | - Alemu Tesfaye
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
| | - Minaleshewa Atlabachew
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
| | - Atakilt Abebe
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
| | - Tihunie Fentahun
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
| | - Abaineh Munshea
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar 6000, Ethiopia
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Yuan J, Wang S, Cheng S, Liu Y, Zhao F, Zeng B. A novel electrochemical sensor based on a Cu-coordinated molecularly imprinted polymer and MoS 2 modified chitin-derived carbon for selective detection of dextromethorphan. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2024; 16:3278-3286. [PMID: 38738557 DOI: 10.1039/d4ay00549j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/14/2024]
Abstract
Dextromethorphan (DXM) is a widely utilized central antitussive agent, which is frequently abused by individuals seeking its recreational effect. But DXM overdose can cause some adverse effects, including brain damage, loss of consciousness, and cardiac arrhythmias, and hence its detection is significant. Herein, an electrochemical sensor based on a Cu-coordinated molecularly imprinted polymer (Cu-MIP) was fabricated for its detection. For constructing the sensor, nitrogen-doped carbon nanosheets (CCNs) were prepared through calcining chitin under an argon atmosphere, and molybdenum disulfide (MoS2) was allowed to grow on their surface. Subsequently, the obtained MoS2/CCNs composite was employed to modify a glassy carbon electrode (GCE), and the Cu-MIP was electrodeposited on the electrode in a Cu-1,10-phenanthroline (Cu-Phen) solution containing DXM, where Cu2+ played a role in facilitating electron transfer and binding DXM. Due to the large specific surface area, good electrocatalytic properties and recognition of the resulting composite, the resulting Cu-MIP/MoS2/CCNs/GCE showed high selectivity and sensitivity. Under optimized experimental conditions, the peak current of DXM and its concentration exhibited a good linear relationship over the concentration range of 0.1-100 μM, and the limit of detection (S/N = 3) was 0.02 μM. Furthermore, the electrochemical sensor presented good stability, and it was successfully used for the determination of DXM in pharmaceutical, human serum and urine samples.
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Affiliation(s)
- Jingxia Yuan
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
| | - Shulei Wang
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
| | - Siying Cheng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
| | - Yiwei Liu
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
| | - Faqiong Zhao
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
| | - Baizhao Zeng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, Hubei Province, P. R. China.
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Debalkie A, Guadie A, Kassa A, Tefera M. Selective Determination of Norfloxacin in Pharmaceutical Formulations and Human Urine Samples Using Poly(8-aminonaphthaline-2-sulfonic Acid)-Modified Glassy Carbon Electrodes. ACS OMEGA 2023; 8:25758-25765. [PMID: 37521652 PMCID: PMC10372944 DOI: 10.1021/acsomega.3c00805] [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: 02/07/2023] [Accepted: 06/26/2023] [Indexed: 08/01/2023]
Abstract
In this study, a glassy carbon electrode was modified potentiodynamically with poly(8-aminonaphthaline-2-sulfonic acid) [poly(ANSA)/GCE] for the detection of norfloxacin (NFN) in tablet formulations and human urine samples. Improvement of the effective surface area of the modified electrode and decreased charge-transfer resistance confirmed surface modification of the GCE by a conductive poly(ANSA) film. The appearance of an oxidative peak without a reductive peak in the reverse scan direction showed the irreversibility of the electrochemical oxidation of NFN in both the bare GCE and poly(ANSA)/GCE. A better coefficient of determination for the peak current on the square root of the scan rate (R2 = 0.99514) than the scan rate (R2 = 0.97109), indicating the oxidation of NFN at the poly(ANSA)/GCE, was predominantly diffusion mass transport-controlled. Under optimized pH and square wave parameters, the voltammetric current response of NFN at the poly(ANSA)/GCE showed linear dependence on the concentration, ranging from 1.0 × 10-8 to 4.0 × 10-4 M with a limit of detection of 4.1 × 10-10. The NFN level in the studied tablet brands was in the range of 90.30-103.3% of their labeled values. Recovery results in tablet and urine samples ranged from 98.35 to 101.20% and 97.75 to 99.60%, respectively, and interference recovery results were less than 2.13% error in the presence of ampicillin, chloroquine phosphate, and cloxacillin. The present method had a better performance for the determination of NFN in tablet formulations and urine samples as compared with recently reported voltammetric methods due to its requirement of a simple electrode modification step, which provides the least limit of detection and a reasonably wider linear dynamic range.
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Affiliation(s)
- Ameha Debalkie
- Department
of Chemistry, College of Science, University
of Gondar, Gondar 196, Ethiopia
| | - Atnafu Guadie
- Department
of Chemistry, College of Science, University
of Gondar, Gondar 196, Ethiopia
| | - Adane Kassa
- Department
of Chemistry, College of Natural and Computational Sciences, Debre Markos University, Debre Markos 269, Ethiopia
- Department
of Chemistry, College of Science, Bahir
Dar University, Ethipia 79, Ethiopia
| | - Molla Tefera
- Department
of Chemistry, College of Science, University
of Gondar, Gondar 196, Ethiopia
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Kassa A, Benor A, Tigineh GT, Abebe A. Characterization and Application of a Synthesized Novel Poly(chlorobis(1,10-phenanthroline)resorcinolcobalt(II) chloride)-Modified Glassy Carbon Electrode for Selective Voltammetric Determination of Cefadroxil in Pharmaceutical Formulations, Human Urine, and Blood Serum Samples. ACS OMEGA 2023; 8:15181-15192. [PMID: 37151555 PMCID: PMC10157687 DOI: 10.1021/acsomega.3c00170] [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: 01/10/2023] [Accepted: 04/06/2023] [Indexed: 05/09/2023]
Abstract
Cefadroxil belongs to the β-lactam antibiotics, mainly used for the treatment of various bacterial infections, caused by Gram-positive and Gram-negative bacteria. However, it is also encountering serious bacterial resistance, necessitating continuous monitoring of its level in pharmaceutical and biological samples. This study presents a selective, accurate, and precise square-wave voltammetric method based on a novel poly(chlorobis(1,10-phenanthroline)resorcinolcobalt(II)chloride)-modified glassy carbon electrode (poly(CP2RCoC)/GCE) for determination of cefadroxil (CDL). UV-vis spectroscopy, FT-IR spectroscopy, metal and halide estimation, CHN elemental analysis, and electrolytic conductivity measurement results confirmed the synthesis of the title complex modifier. Electrode characterization results revealed modification of the surface of the electrode by an electroactive and a conductive polymer film (poly(CP2RCoC)/GCE), leading to an improved effective electrode surface area. In contrast to the bare electrode, the appearance of an irreversible oxidative peak at a much reduced potential with a 7-fold current enhancement at poly(CP2RCoC)/GCE showed the catalytic effect of the modifier toward oxidation of CDL. The square-wave voltammetric current response of poly(CP2RCoC)/GCE showed a linear dependence on the concentration of CDL in the range of 1 × 10-7-3.0 × 10-4 M with a detection limit of 4.3 × 10-9. The CDL level in the selected two tablet brands was in the range of 97.25-100.00% of their labeled values. The spike recovery results in tablet, human blood serum, and urine samples were 98.85-101.30, 99.20-100.39, and 98.10-99.99%, respectively. Interference recovery results with a less than 4.74% error, lower LoD, and wider dynamic range than the previously reported methods validated the potential applicability of the present method with excellent accuracy and sensitivity based on the novel mixed-ligand complex-modified GCE (poly(CP2RCoC)/GCE) for determination of CDL in various real samples with a complex matrix.
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Affiliation(s)
- Adane Kassa
- Department
of Chemistry, College of Natural and Computational Sciences, Debre Markos University, Debre Markos, P.O. Box 269, Ethiopia
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar H9FX+Q62, Ethiopia
| | - Amare Benor
- Department
of Physics, College of Science, Bahir Dar
University, Bahir Dar H9FX+Q62, Ethiopia
| | - Getinet Tamiru Tigineh
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar H9FX+Q62, Ethiopia
| | - Atakilt Abebe
- Department
of Chemistry, College of Science, Bahir
Dar University, Bahir
Dar H9FX+Q62, Ethiopia
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Kassa A, Tigineh GT, Abebe A. Electrochemical Determination of Chloroquine Phosphate in Real Samples Using a Diresorcinate-1,10-phenanthrolinecobalt(II)-Modified Glassy Carbon Electrode. ChemistryOpen 2023; 12:e202300004. [PMID: 36971069 PMCID: PMC10041376 DOI: 10.1002/open.202300004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2023] [Revised: 03/01/2023] [Indexed: 03/29/2023] Open
Abstract
Chloroquine phosphate (CQP) is used for malaria treatment. As it is facing increasing resistance, it needs continuous monitoring using sensitive and specific detection methods. In this work, a voltammetric sensor was prepared by electropolymerization of a diresorcinate-1,10-phenanthrolinecobalt(II) complex on a glassy carbon electrode (poly(DHRPCo)/GCE) which was followingly characterized. Compared with a bare GCE, CQP showed single well shaped irreversible oxidative peak at the poly(DHRPCo)/GCE. The peak current showed excellent linearity with CQP concentration in the range of 0.005-300.0 μm with a detection limit of 0.39 nm. The response of CQP at poly(DHRPCo)/GCE was not influenced by the presence of amoxicillin, ciprofloxacillin and paracetamol in addition to its high stability and reproducibility. It was applied for detection of CQP in various real samples, including three brands of tablets, human blood serum, and urine samples. The detected amount in tablets were in the range 98.4-103.2 % of their labeled value. Spike recovery results in human blood serum, urine, and tablet samples were 99.35-100.28 %, 99.03-100.32 %, and 98.40-100.41 %, respectively. Interference recovery results with less than 4.60 % error, the lower limit of detection and the wider dynamic range than most of the previously reported methods validate the potential applicability of the proposed method for CQP determination in various real samples with complex matrices.
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Affiliation(s)
- Adane Kassa
- Department of Chemistry, College of Natural and Computational Sciences, Debre Markos University, 269, Debre Markos, Ethiopia
- Department of Chemistry, College of Science, Bahir Dar University, 79, Bahir Dar, Ethiopia
| | - Getinet Tamiru Tigineh
- Department of Chemistry, College of Science, Bahir Dar University, 79, Bahir Dar, Ethiopia
| | - Atakilt Abebe
- Department of Chemistry, College of Science, Bahir Dar University, 79, Bahir Dar, Ethiopia
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A non-toxic poly(resorcinol) modified glassy carbon electrode for highly Selective Square wave voltammetry determination of aspirin in tablet formulations and human urine samples. SENSING AND BIO-SENSING RESEARCH 2023. [DOI: 10.1016/j.sbsr.2023.100554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/17/2023] Open
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Debalke A, Kassa A, Asmellash T, Beyene Y, Amare M, Tigineh GT, Abebe A. Synthesis of a novel diaquabis(1,10-phenanthroline)copper(II)chloride complex and its voltammetric application for detection of amoxicillin in pharmaceutical and biological samples. Heliyon 2022; 8:e11199. [PMID: 36339986 PMCID: PMC9626942 DOI: 10.1016/j.heliyon.2022.e11199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2021] [Revised: 02/08/2022] [Accepted: 10/17/2022] [Indexed: 11/05/2022] Open
Abstract
A one step facile synthesis of the novel diaquabis(1,10-phenanthroline)copper(II)chloride (A2P2CuC) complex is demonstrated. Cyclic voltammetric and electrochemical impedance spectroscopic results revealed potentiodynamic deposition of a conductive electroactive poly(A2P2CuC) film on the glassy carbon electrode surface increasing its effective surface area. In contrast to the unmodified glassy carbon electrode, appearance of an oxidative peak at a reduced potential with over two fold current for amoxicillin at poly(A2P2CuC)/GCE demonstrated its electrocatalytic property attributed to reduce charge transfer resistance and the improved surface area of the electrode surface. Better correlation of the oxidative peak current with square root of scan rate (R2 = 0.99779) than with scan rate (R2 = 0.96953) supplemented by slope of 0.58 for log(current) versus log(scan rate) confirmed diffusion controlled irreversible oxidation of amoxicillin. At optimized solution and SWV parameters, current response of poly(A2P2CuC)/GCE showed linear dependence on concentration of amoxicillin (2.0–100.0 μM) with LoD 0.0115 μM. While no amoxicillin was detected in the human blood serum sample, an amount 89.40–100.55% of the nominal level was detected in the analyzed eight tablet brands. Spike recovery in tablet samples (98.90–101.95%) and blood serum sample (102.20–101.37%); interference with an error (%RSD) of 0.00–4.51% in tablet and 0.00–2.10% in serum samples; excellent stability and reproducible results, added with the wide dynamic range and low LoD validated the method for amoxicillin determination in pharmaceutical formulations and human urine samples.
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Affiliation(s)
- Ameha Debalke
- Department of Chemistry, College of Science, Bahir Dar University, Ethiopia
| | - Adane Kassa
- Department of Chemistry, College of Science, Bahir Dar University, Ethiopia
- Department of Chemistry, College of Natural and Computational Sciences, Debre Markos University, Ethiopia
- Corresponding author.
| | | | - Yonas Beyene
- Department of Chemistry, College of Science, Bahir Dar University, Ethiopia
| | - Meareg Amare
- Department of Chemistry, College of Science, Bahir Dar University, Ethiopia
| | | | - Atakilt Abebe
- Department of Chemistry, College of Science, Bahir Dar University, Ethiopia
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Kassa A, Amare M, Benor A, Tigineh GT, Beyene Y, Tefera M, Abebe A. Potentiodynamic Poly(resorcinol)-Modified Glassy Carbon Electrode as a Voltammetric Sensor for Determining Cephalexin and Cefadroxil Simultaneously in Pharmaceutical Formulation and Biological Fluid Samples. ACS OMEGA 2022; 7:34599-34607. [PMID: 36188243 PMCID: PMC9520737 DOI: 10.1021/acsomega.2c04514] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 08/30/2022] [Indexed: 05/24/2023]
Abstract
This study covers the development of a fast, selective, sensitive, and stable method for the simultaneous determination of cephalosporins (cephalexin (CLN) and cefadroxil (CFL)) in biological fluids and tablet samples using potentiodynamic fabrication of a poly(resorcinol)-modified glassy carbon electrode (poly(reso)/GCE). The results of cyclic voltammetry and electrochemical impedance spectroscopy supported the modification of the GCE by a polymer layer that raised the electrode surface area and conductivity. At the poly(reso)/GCE, an irreversible oxidative peak with four- and fivefold current enhancement for CLN and CFL, respectively, at a substantially lower potential demonstrated the catalytic action of the modifier. Under optimized solution and parameters, the peak current response at the poly(reso)/GCE revealed a linear dependence on the concentration of CLN and CFL within the range 0.1-300 and 0.5-300 μM, respectively, with a limit of detection (LoD) of 3.12 and 8.7 nM, respectively. The levels of CLN in four selected tablet brands and CFL in two tablet brands were in the vicinity of 91.00-103.65% and 97.7-98.83%, respectively, of their nominal values. The recovery results for CLN in pharmaceutical samples were in the range of 99.00-100.67% and for CFL 97.9-99.75% and for blood serum and urine samples 99.55-100.55% and 99.33-100.34% for CLN and 97.13-100.60% and 96.73-102.50% for CFL, respectively. Interference recovery results with errors less than 4.81%, lower LoD, wider dynamic range, excellent recovery results, and good stability of the modifier compared to those for the previously reported methods validated the use of the poly(reso)/GCE for determining CLN and CFL simultaneously in various real samples.
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Affiliation(s)
- Adane Kassa
- Department of Chemistry, College of Natural and Computational Sciences, Debre Markos University, P.O. Box 269, Debre Markos, Ethiopia
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
| | - Meareg Amare
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
| | - Amare Benor
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
| | - Getinet Tamiru Tigineh
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
| | - Yonas Beyene
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
| | - Molla Tefera
- Department of Chemistry, College of Science, University of Gondar, P.O. Box 196, Gondar, Ethiopia
| | - Atakilt Abebe
- Department of Chemistry and Department of Physics, College of Science, Bahir Dar University, P.O. Box 79, Bahir Dar, Amhara, Ethiopia
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Kassa A, Abebe A, Tamiru G, Amare M. Synthesis of a Novel [diresorcinate‐1,10‐phenanthrolinecobalt(II)] Complex, and Potentiodynamic Fabrication of Poly(DHRPCo)/GCE for Selective Square Wave Voltammetric Determination of Procaine Penicillin G in Pharmaceutical and Biological Fluid Samples. ChemistrySelect 2022. [DOI: 10.1002/slct.202103458] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Adane Kassa
- Department of Chemistry College of Natural and Computational Sciences Debre Markos University Ethiopia
- Department of Chemistry College of Science Bahir Dar University Ethiopia
| | - Atakilt Abebe
- Department of Chemistry College of Science Bahir Dar University Ethiopia
| | - Getinet Tamiru
- Department of Chemistry College of Science Bahir Dar University Ethiopia
| | - Meareg Amare
- Department of Chemistry College of Science Bahir Dar University Ethiopia
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Poly(aquachlorobis(1,10–phenanthroline)copper(II)iodidemonohydrate)/GCE for simultaneous determination of caffeine and theophylline in human serum, tea, and tablet samples. ARAB J CHEM 2022. [DOI: 10.1016/j.arabjc.2021.103458] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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Mebrie A, Amare M, Kassa A, Yohannes YB, Tesfaye A, Abebe A, Asmelash T. Novel poly(diaquabis(1,10-phenanthroline)copper(II)chloride) modified glassy carbon electrode for square wave voltammetric determination of aspirin in tablet samples. SENSORS INTERNATIONAL 2022. [DOI: 10.1016/j.sintl.2022.100187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Hu JI, Ma W, Pan Y, Chen Z, Zhang Z, Wan C, Sun Y, Qiu C. Resolving the Tribo-catalytic reaction mechanism for biochar regulated Zinc Oxide and its application in protein transformation. J Colloid Interface Sci 2021; 607:1908-1918. [PMID: 34798707 DOI: 10.1016/j.jcis.2021.09.161] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 09/24/2021] [Accepted: 09/26/2021] [Indexed: 11/15/2022]
Abstract
The utilization of mechanical energy to control water pollutants under dark conditions is currently a point of study focus. Herein, biochar -zinc oxide (BC-ZnO) composites with various structures were synthesized by co-pyrolysis of cotton and ZnO at different temperature and used for tribo-catalytic reaction. The introduction of BC can improve charge transmission and separation efficiency. Ultraviolet photoelectron spectra (UPS) and density functional theory (DFT) calculation prove the addition of BC can reduce work function of ZnO, and enhance its electron-donating ability. Specially, suitable adsorption amount is the key factor to improve the tribo-catalytic performance. When the pyrolysis temperature is 600 °C, BC-ZnO has the best degradation efficiency, which can degrade 90% Rhodamine B (RhB) in 75 min, while ZnO can degrade only 38%. On this basis, using bovine serum albumin (BSA) as a model, the effect of tribo-catalytic reaction on controlling proteins in water was studied by fluorescence excitation-emission matrix spectroscopy (3D EEM) and infrared microscope, and the transformation of proteins was further analyzed. This study provides a new strategy to improve the tribo-catalytic performance of ZnO, and explores its application prospects of biological wastewater control.
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Affiliation(s)
- JIng Hu
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Wei Ma
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Yuzhen Pan
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Zhen Chen
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Zhe Zhang
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Chunxiang Wan
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Yanwen Sun
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
| | - Chenxi Qiu
- Department of Chemistry, Dalian University of Technology, Dalian 116024, PR China
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