1
|
Adane WD, Chandravanshi BS, Tessema M. A novel electrochemical sensor for the detection of metronidazole residues in food samples. CHEMOSPHERE 2024; 359:142279. [PMID: 38723687 DOI: 10.1016/j.chemosphere.2024.142279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 05/02/2024] [Accepted: 05/06/2024] [Indexed: 05/14/2024]
Abstract
The widespread use and misuse of antibiotics in pharmaceuticals and animal farming has resulted in their accumulation in food sources and the environment, posing significant threats to human health, the environment, and the global economy. In this study, we have developed a hypersensitive, and ultra-selective electrochemical sensor, the first of its kind, by integrating a thermally annealed gold-silver alloy nanoporous matrix (TA-Au-Ag-ANpM) with reduced graphene oxide (r-GO) and poly(glycine) at the surface of a glassy carbon electrode (GCE). This sensor aims to detect life-threatening metronidazole (MTZ) residues in food samples. TA-Au-Ag-ANpM/r-GO/poly(glycine)/GCE was thoroughly characterized using a range of analytical techniques, including UV-Vis, FT-IR, XRD, SEM, and EDX. Furthermore, its electrochemical properties were investigated by cyclic voltammetry (CV), square wave voltammetry (SWV), and electrochemical impedance spectroscopy (EIS). The sensor exhibited outstanding performance, with a broad linear range of 2.0 pM-410 μM. The limits of detection (LOD) and quantification (LOQ) were determined to be 0.0312 pM and 0.104 pM, respectively. The TA-Au-Ag-ANpM/r-GO/poly(glycine)/GCE exhibited exceptional reproducibility, repeatability, stability, and resistance to interferences. Moreover, the sensor demonstrated outstanding performance in detecting MTZ residues in milk powder, pork, and chicken meat samples, achieving very good recoveries (96.9%-101.4%) with a relative standard deviation (RSD) below 5%. This performance highlights the potential for practical applications in food safety and quality monitoring. Therefore, the developed sensor contributes to the advancement of electrochemical sensing technology and its application in ensuring food safety and integrity by combating antibiotic residues.
Collapse
Affiliation(s)
| | | | - Merid Tessema
- Department of Chemistry, Addis Ababa University, P. O. Box 1176, Addis Ababa, Ethiopia.
| |
Collapse
|
2
|
Bezza FA, Iwarere SA, Brink HG, Chirwa EMN. Design and fabrication of porous three-dimensional Ag-doped reduced graphene oxide (3D Ag@rGO) composite for interfacial solar desalination. Sci Rep 2024; 14:13793. [PMID: 38877030 PMCID: PMC11178800 DOI: 10.1038/s41598-024-62987-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2024] [Accepted: 05/23/2024] [Indexed: 06/16/2024] Open
Abstract
Solar-driven interfacial desalination technology has shown great promise in tackling the urgent global water scarcity crisis due to its ability to localize heat and its high solar-to-thermal energy conversion efficiency. For the realization of sustainable saline water desalination, the exploration of novel photothermal materials with higher water vapor generation and photothermal conversion efficiency is indispensable. In the current study, a novel 3D interconnected monolithic Ag-doped rGO network was synthesized for efficient photothermal application. The Ultraviolet-Visible-Near Infrared (UV-Vis-NIR) and FTIR analyses demonstrated that the controlled hydrothermal reduction of GO enabled the restoration of the conjugated sp2 bonded carbon network and the subsequent electrical and thermal conductivity through a significant reduction of oxygen-containing functional groups while maintaining the hydrophilicity of the composite photothermal material. In the solar simulated interfacial desalination study conducted using 3.5 wt.% saline water, the average surface temperatures of the 3D material increased from 27.1 to 54.7 °C in an hour, achieving an average net dark-excluded evaporation rate of 1.40 kg m-2 h-1 and a photothermal conversion efficiency of ~ 97.54% under 1 sun solar irradiance. In the outdoor real-world application test carried out, the surface temperature of the 3D solar evaporator reached up to 60 °C and achieved a net water evaporation rate of 1.50 kg m-2 h-1 under actual solar irradiation. The 3D interwoven porous hierarchical evaporator displayed no salt precipitation over the 54-h period monitored, demonstrating the promising salt rejection and real-world application potential for efficient desalination of saline water.
Collapse
Affiliation(s)
- Fisseha A Bezza
- Water Utilization and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - Samuel A Iwarere
- Water Utilization and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - Hendrik G Brink
- Water Utilization and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa
| | - Evans M N Chirwa
- Water Utilization and Environmental Engineering Division, Department of Chemical Engineering, University of Pretoria, Pretoria, 0002, South Africa.
| |
Collapse
|
3
|
Hu T, Yue Z, Wang Y, Yu Y, Chang Y, Pei L, Chen W, Han P, Martens W, Waclawik ER, Wu H, Yong Zhu H, Jia J. Cu@CuO x/WO 3 with photo-regulated singlet oxygen and oxygen adatoms generation for selective photocatalytic aromatic amines to imines. J Colloid Interface Sci 2024; 663:632-643. [PMID: 38430833 DOI: 10.1016/j.jcis.2024.02.187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/16/2024] [Accepted: 02/26/2024] [Indexed: 03/05/2024]
Abstract
Photocatalysts can absorb light and activate molecular O2 under mild conditions, but the generation of unsuitable reactive oxygen species often limits their use in synthesizing fine chemicals. To address this issue, we disperse 1 wt% copper on tungsten trioxide (WO3) support to create an efficient catalyst for selective oxidative coupling of aromatic amines to imines under sunlight irradiation at room temperature. Copper consists of a metallic copper core and an oxide shell. Experimental and density functional theory calculations have confirmed that Cu2O is the primary activation site. Under λ < 475 nm, the light excites electrons of the valence bands in Cu2O and WO3, which activate O2 to superoxide radical •O2-. Then rapidly transforms into oxygen adatoms (•O) and oxygen anion radicals (•O-) species on the surface of Cu2O. Simultaneously, it is captured by holes in the WO3 valence band to generate singlet oxygen (1O2). •O bind to 1O2 promoting the coupling reaction of amines. When λ > 475 nm, intense light absorption due to the localized surface plasmon resonance excites numerous electrons in Cu to promote the oxidative coupling with the adsorbed O2. This study presents a promising approach towards the design of high-performance photocatalysts for solar energy conversion and environmentally-friendly oxidative organic synthesis.
Collapse
Affiliation(s)
- Tianjun Hu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Zhizhu Yue
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Ying Wang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Yonghe Yu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Yuhong Chang
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Linjuan Pei
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Wenwen Chen
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Pengfei Han
- College of Chemistry and Chemical Engineering Hunan University Changsha, 410082, PR China
| | - Wayde Martens
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Eric R Waclawik
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4000, Australia
| | - Haishun Wu
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China
| | - Huai Yong Zhu
- School of Chemistry and Physics, Queensland University of Technology, Brisbane, Queensland 4000, Australia.
| | - Jianfeng Jia
- Key Laboratory of Magnetic Molecules & Magnetic Information Materials Ministry of Education, The School of Chemical and Material Science Shanxi Normal University Taiyuan, Shanxi 030006, PR China.
| |
Collapse
|
4
|
Yu C, Zhou Y, Zhou Y, Liu Z, Liang M, Huang L, Zhao J. Copper Phenylacetylide and TiO 2 Modification for an Efficient Visible-Light-Driven Oxidative Coupling of Amines. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38684661 DOI: 10.1021/acsami.4c00894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
The selective oxidation of amines to imines under mild conditions has attracted much attention. Our study reveals that copper phenylacetylide (PhC2Cu) could serve as an efficient photocatalyst for imine synthesis under visible-light irradiation (>400 nm). Utilizing benzylamine as a model reactant, PhC2Cu achieves an imine yield of 50.4%, which is 5 times higher than that of P25 under the same conditions and comparable to the yield obtained by the 3 wt % Au/P25 photocatalyst (55.4%). Further loading 3.9 nm TiO2 onto PhC2Cu through tetrabutyl titanate hydrolysis increases the imine yield to 84.7%, with a Ti:Cu atomic ratio of 3.65%. Control experiments, photoluminescence (PL) spectra, optical pump terahertz probe (OPTP) spectra, and electron spin resonance (ESR) tests confirm that the optimized TiO2 modification promotes the separation of excited carriers and electron transfer in PhC2Cu and facilitates the activation of surface oxygen, thereby enhancing the formation of superoxide radicals, a key active oxygen species in the reaction system. This work presents a promising strategy for efficient imine synthesis via amine coupling and expands the application field of PhC2Cu-based photocatalysts.
Collapse
Affiliation(s)
- Chunzheng Yu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Yiwei Zhou
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
- Tianjin Key Laboratory of Advanced Functional Porous Materials, Institute for New Energy Materials & Low-Carbon Technologies, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Ye Zhou
- China-UK Low Carbon College, Shanghai Jiao Tong University, Shanghai 200240, P. R. China
| | - Zhenkun Liu
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Mao Liang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Lei Huang
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
| | - Jian Zhao
- Tianjin Key Laboratory of Organic Solar Cells and Photochemical Conversion, School of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, P. R. China
- Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education), Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
5
|
Enaiet Allah A, Mohamed F, Ghanem MA, Ahmed AM. Chemical synthesis and super capacitance performance of novel CuO@Cu 4O 3/rGO/PANI nanocomposite electrode. RSC Adv 2024; 14:13628-13639. [PMID: 38665496 PMCID: PMC11044122 DOI: 10.1039/d4ra00065j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2024] [Accepted: 04/11/2024] [Indexed: 04/28/2024] Open
Abstract
Copper oxide-based nanocomposites are promising electrode materials for high-performance supercapacitors due to their unique properties that aid electrolyte access and ion diffusion to the electrode surface. Herein, a facile and low-cost synthesis in situ strategy based on co-precipitation and incorporation processes of reduced graphene oxide (rGO), followed by in situ oxidative polymerization of aniline monomer has been reported. CuO@Cu4O3/rGO/PANI nanocomposite revealed the good distribution of CuO@Cu4O3 and rGO within the polymer matrix which allows improved electron transport and ion diffusion process. Galvanostatic charge-discharge (GCD) results displayed a higher specific capacitance value of 508 F g-1 for CuO@Cu4O3/rGO/PANI at 1.0 A g-1 in comparison to the pure CuO@Cu4O3 278 F g-1. CuO@Cu4O3/rGO/PANI displays an energy density of 23.95 W h kg-1 and power density of 374 W kg-1 at the current density of 1 A g-1 which is 1.8 times higher than that of CuO@Cu4O3 (13.125 W h kg-1) at the same current density. The retention of the electrode was 93% of its initial capacitance up to 5000 cycles at a scan rate of 100 mV s-1. The higher capacitance of the CuO@Cu4O3/rGO/PANI electrode was credited to the formation of a fibrous network structure and rapid ion diffusion paths through the nanocomposite matrix that resulted in enhanced surface-dependent electrochemical properties.
Collapse
Affiliation(s)
- Abeer Enaiet Allah
- Department of Chemistry, Faculty of Science, Beni-Suef University 62514 Beni-Suef City Egypt
- Materials Science Lab, Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
| | - Fatma Mohamed
- Department of Chemistry, Faculty of Science, Beni-Suef University 62514 Beni-Suef City Egypt
- Materials Science Lab, Chemistry Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
- Nanophotonics and Applications Lab, Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
| | - Mohamed A Ghanem
- Chemistry Department, College of Science, King Saud University Riyadh 11451 Saudi Arabia
| | - Ashour M Ahmed
- Nanophotonics and Applications Lab, Physics Department, Faculty of Science, Beni-Suef University Beni-Suef 62514 Egypt
- Physics Department, College of Science, Imam Mohammad Ibn Saud Islamic University (IMSIU) Riyadh 11623 Saudi Arabia
| |
Collapse
|
6
|
Elsokary A, Soliman M, Abulfotuh F, Ebrahim S, Sadat-Shafai T, Karim M. Fabrication of composite transparent conductive electrodes based on silver nanowires. Sci Rep 2024; 14:3045. [PMID: 38321055 PMCID: PMC10847120 DOI: 10.1038/s41598-024-53286-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2023] [Accepted: 01/30/2024] [Indexed: 02/08/2024] Open
Abstract
Composite transparent conductive electrodes (C-TCEs) have recently been produced using low-cost techniques to keep up with the boom in the fabrication and development of optoelectronic devices. In this article, silver nanowires (AgNWs) were successfully synthesized by a simple hydrothermal method using different molecular weights MWs of poly (N-vinylpyrrolidone) (PVP). Graphene oxide (GO) was prepared using the modified Hummers' method and a reduction step was held on GO films to produce reduced GO (rGO). C-TCEs were fabricated by over-coating the AgNWs electrodes with rGO, or poly(3,4-ethylenedioxythiophene) polystyrene sulfonate to improve the roughness, surface energy, and sheet resistance. The influence of using lower and higher MWs of PVP on the yield, shape, and size of AgNWs was investigated. The results showed that using lower MW of PVP had a great effect on the yield, morphology, and aspect ratio of AgNWs with diameter of 46 nm and average length 12 µm. The optical, morphological, topographical, and electrical properties of TCEs were studied. AgNWs/rGO composite electrode provided the lowest surface roughness and surface energy of 250 nm and 47.95 mN/m, respectively, with a relatively high transparency of 78.2% at 550 nm light wavelength, and a low sheet resistance of 27 Ω/□.
Collapse
Affiliation(s)
- Amal Elsokary
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt.
| | - Moataz Soliman
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Fuad Abulfotuh
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Shaker Ebrahim
- Department of Materials Science, Institute of Graduate Studies and Research, Alexandria University, P.O. Box 21526, Alexandria, Egypt
| | - Torfeh Sadat-Shafai
- Department of Engineering, School of Digital, Technologies and Arts, Staffordshire University, Manchester, UK
| | - Marwa Karim
- Physics Department, Faculty of Science, Alexandria University, Moharram Bek, P.O. Box 21511, Alexandria, Egypt
| |
Collapse
|
7
|
Lee J, Jo SJ, Yoon S, Ko M, Jang T, Kim HK, Park JA. Coupled adsorption-photocatalysis process for the removal of diclofenac using magnetite/reduced graphene oxide nanocomposite. CHEMOSPHERE 2024; 349:140788. [PMID: 38042428 DOI: 10.1016/j.chemosphere.2023.140788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Revised: 10/28/2023] [Accepted: 11/21/2023] [Indexed: 12/04/2023]
Abstract
Diclofenac (DCF) is frequently detected in water bodies (ng/L to g/L) as it is not completely removed by conventional wastewater treatment plants. Adsorption and photocatalysis have been studied as promising methods for treating DCF; however, both processes have limitations. Thus, in this study, the removal efficiency of DCF is evaluated using a magnetite/reduced graphene oxide (Fe3O4/RGO) nanocomposite via a coupled adsorption-catalysis process. The Fe3O4/RGO nanocomposite was successfully synthesized using a microwave-assisted solvothermal method and exhibited a bandgap of 2.60 eV. The kinetic data best fitted the Elovich model (R2 = 0.994, χ2 = 0.29), indicating rapid adsorption. The maximum DCF adsorption capacity calculated using the Langmuir model was 80.33 mg/g. An ultraviolet C (UVC) light source and 0.1 g/L of Fe3O4/RGO nanocomposite were the optimum conditions for the removal of DCF (C0 = 30 mM) by a coupled adsorption-photocatalysis process (first-order rate constant (k) = 0.088/min), which was greater than the single adsorption (k = 0.029/min) and pre-adsorption and post-photocatalysis (k = 0.053/min) processes. This indicates that the adsorbed DCF did not hamper the photocatalytic reaction of the Fe3O4/RGO nanocomposite, but rather enhanced the coupled adsorption-photocatalytic reaction. DCF removal efficiency was higher at acidic conditions (pH 4.3-5.0), because high H+ promotes the generation of certain reactive oxygen species (ROS) and increases of electrostatic interaction. The presence of NaCl and CaCl2 (10 mM) did not notably affect the total DCF removal efficiency; however, Ca2+ affected the initial DCF adsorption affinity. Scavenger experiments demonstrated O2∙- and h+ play a key ROS than ·OH to degrade DCF. The acute toxicity of DCF towards Aliivibrio fischeri gradually decreased with increasing treatment time.
Collapse
Affiliation(s)
- Jooyoung Lee
- Department of Environmental Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Seong-Jun Jo
- Department of Battery Convergence Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Soyeong Yoon
- Department of Environmental Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Mingi Ko
- Department of Environmental Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Taesoon Jang
- Department of Environmental Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea
| | - Hyun-Kyung Kim
- Department of Battery Convergence Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea; Interdisciplinary Program in Advanced Functional Materials and Devices Development, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| | - Jeong-Ann Park
- Department of Environmental Engineering, Kangwon National University, Chuncheon, 24341, Republic of Korea; Department of Integrated Energy and Infra System, Kangwon National University, Chuncheon, 24341, Republic of Korea.
| |
Collapse
|
8
|
Tripathi NP, Jain S, Singh RK, Sengupta S. Tripodal Triazine and 1,8-Naphthalimide-based Small Molecules as Efficient Photocatalysts for Visible-light Oxidative Condensation. Chemistry 2024; 30:e202303244. [PMID: 38038268 DOI: 10.1002/chem.202303244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/18/2023] [Accepted: 12/01/2023] [Indexed: 12/02/2023]
Abstract
Tripodal donor-acceptor (D-A) small molecules Tr-Np3 and Tr-T-Np3 consisting of triphenyl triazine and 1,8-naphthalimide, without and with a thiophene spacer have been synthesized. Their optical and redox properties were thoroughly investigated along with their utilization as photocatalysts in organic transformations. Compounds Tr-Np3 and Tr-T-Np3 showed broad absorption in the range of 290-480 nm in solutions and 300-510 nm in thin films. These tripodal molecules displayed wide optical bandgaps of (Eg opt ) 3.10 eV and 2.64 eV with very deep-lying HOMO energy levels (-6.60 eV and -6.03 eV) and low-lying LUMO levels (-3.50 eV and -3.40 eV). Appreciable electron mobilities of 5.24×10-4 cm2 /Vs and 6.14×10-4 cm2 /Vs were obtained for compounds Tr-Np3 and Tr-T-Np3 respectively by space-charge limited current (SCLC) measurements. Metal-free tripodal molecules Tr-Np3 and Tr-T-Np3 showed excellent photocatalytic abilities towards condensation of aromatic aldehydes and o-phenylenediamine followed by cyclization under visible light to yield benzimidazole derivatives that are of high medicinal value.
Collapse
Affiliation(s)
- Narendra Pratap Tripathi
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Punjab, 140306, India
| | - Sanyam Jain
- Photovoltaic Metrology Section, Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi, 110012, India
| | - Rajiv K Singh
- Photovoltaic Metrology Section, Advanced Materials and Device Metrology Division, CSIR-National Physical Laboratory, Dr. K. S. Krishnan Marg, New Delhi, 110012, India
| | - Sanchita Sengupta
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Knowledge City, Sector 81, Punjab, 140306, India
| |
Collapse
|
9
|
Potdar RP, Khollam YB, Shaikh SF, Patil SA, Al-Enizi AM, More PS. Europium oxide modified reduced graphene oxide composite for trace detection of hydrogen phosphate ions in soil samples. Talanta 2024; 267:125118. [PMID: 37688897 DOI: 10.1016/j.talanta.2023.125118] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2023] [Revised: 08/03/2023] [Accepted: 08/23/2023] [Indexed: 09/11/2023]
Abstract
The phosphate (PO43-) ion is a constituent of the environment, soil, plants, and animals. There should be a real-time and portable phosphate detection sensor. Herein we propose a colorimetry based sensitive method for hydrogen phosphate (HPO42-) ions detection using europium oxide modified reduced graphene oxide composite (Eu2O3-RGO) and gold nanoparticles (Au NPs). We detect the HPO42- by observing the anti-aggregation of gold nanoparticles. In the presence of a Eu2O3-RGO composite, the Au NPs underwent an aggregation process, causing a colour change of Au NPs from wine red to wine blue. Once Eu-modified RGO was pre-mixed with HPO42- ions and introduced into Au NPs, the Eu nanoparticles in the Eu-modified RGO were attracted to the HPO42- ions. Because of this, the aggregated Au NPs started to anti-aggregate, and the colour of Au NPs changed from wine blue to wine red. The calibration curve of the sensor goes from 0 nM to 500 nM concentration of HPO42- ions. Our sensor has a detection limit of 0.08 nM, which is lower than the reported values. This improved lower detection limit is probably due to the use of RGO, which according to the literature review, can adsorb phosphate ions onto its surface. We optimized the incubation time and europium oxide (Eu2O3) nanoparticle concentration to improve the sensor's sensitivity. Lastly, we tested an agricultural sample using our developed method.
Collapse
Affiliation(s)
- Revati P Potdar
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai, 400032, India
| | - Yogesh B Khollam
- Department of Physics, Baburaoji Gholap College, Sangvi, Pune, 411027, Maharashtra, India
| | - Shoyebmohamad F Shaikh
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Supriya A Patil
- Department Nanotechnology & Advanced Materials Engineering, Sejong University, Seoul, 05006, South Korea
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, Bld-5, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Pravin S More
- Nanomaterials Application Laboratory, The Institute of Science, Dr. Homi Bhabha State University, Mumbai, 400032, India.
| |
Collapse
|
10
|
Sharif HMA, Huang J, Khan K, Afzal S, Li C. Redox mediators boost NO x reduction via trade-off electron charges using a cube-shaped (cMn@rGO) catalyst; mechanism and electrochemical study. CHEMOSPHERE 2024; 346:140510. [PMID: 37918538 DOI: 10.1016/j.chemosphere.2023.140510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 10/07/2023] [Accepted: 10/20/2023] [Indexed: 11/04/2023]
Abstract
Gaseous pollutants like sulfur dioxide and nitrogen oxide(s) (SO2, NOx) have been increasing exponentially for the last two decades, which have had adverse effects on human health, aquatic life, and the environment. Recently, for air pollution taming, manganese/oxide (Mn/MnO) has become a very promising heterogeneous catalyst due to its environment-friendly, low-price, and remarkable catalytic abilities for toxic gases. In this work, cube-shaped Mn nanoparticles (cMn NPs) were decorated on the surface of reduced graphene oxide (rGO) by the solvothermal method. The resulting cMn@rGO composite was employed for electrochemical NOx reduction. However, the microscopic (TEM/HRTEM) and structural analysis were utilised to investigate the morphology and characteristics of the cMn@rGO composite. This electrochemical-based treatment for NOx reduction is employed by using electron shuttle or redox mediators. Here, four distinct redox mediators are used to address electrochemical obstacles, which effectively facilitate electron transportation and promoted NOx reduction on the electrode surface. These mediators not only significantly enhanced the NOx conversion into valuable products, i.e., N2 and N2O, but also made the process smooth with high performance. Among these mediators, neutral red (N.R) exhibited extraordinary potential in enhancing NOx reduction. The obtained results indicated that the remarkable catalytic performance (∼93%) of the cMn@rGO can be attributed to several factors, including the catalyst's three-dimensional architecture structure and abundant active sites. The designed catalyst (cMn@rGO) is not only cost-effective and sustainable but also exhibits excellent potential in effectively reducing NOx, which could be beneficial for large-scale NOx abatement.
Collapse
Affiliation(s)
- Hafiz Muhammad Adeel Sharif
- State Key Laboratory of Electronic Thin Film and Integrated Devices, School of Physics, University of Electronic Science and Technology of China, China; Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Jintong Huang
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China
| | - Kifayatullah Khan
- Department of Environmental and Conservation Sciences, University of Swat, 19130, Pakistan
| | - Shahzad Afzal
- Department of Environmental engineering China Jiliang university Hangzhou, Zhejiang, 310018, China
| | - Changping Li
- Research Center for Eco-Environmental Engineering, Dongguan University of Technology, Dongguan, 523808, China.
| |
Collapse
|
11
|
Zhang H, Zhang Y, Liu Y, Zhang Q, Zhang Y, Shan Z, Liu X, Zhao J, Li G, Yang DP. Self-Assembled and Multilayer-Overlapped ESM-PDA@rGO Nanofilm-Based Flexible Wearable Sensor for Real-Time Body Temperature Monitoring. ACS APPLIED MATERIALS & INTERFACES 2023. [PMID: 38035389 DOI: 10.1021/acsami.3c13700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2023]
Abstract
There is an urgent need for wearable sensors that continuously monitor human physiological conditions in real time. Herein, an ESM-PDA@rGO-based flexible wearable temperature sensor was successfully constructed by integrating an eggshell membrane (ESM) with reduced graphene oxide (rGO) through dopamine (DA) polymerization. Depending on the "bridge effect" of diversified polydopamine (PDA) chains, on the one hand, a staggered arrangement of PDA-rGO frameworks and a lot of conductive pathways were produced and acted as an active layer. On the other hand, PDA-rGO frameworks were linked with ESM by PDA chains as a flexible sensing nanofilm. As a result, these mechanical merits of the ESM-PDA@rGO exhibited a 1.8-fold increase in Young' s modulus and 1.4-fold increase in tensile strength. Thereby, the conformability and performance of the temperature sensor were greatly enhanced, showing excellent sensitivity (-2.23%/°C), good linearity (R2 = 0.979), as well as stability. Especially, the flexible sensing nanofilm is evolved from the staggered arrangement of PDA-rGO frameworks, which endows it with rapid response (only 4-8 s), high resolution (0.1 °C), as well as excellent long-term durability (10 weeks). More importantly, the temperature sensor demonstrates insensitivity to bending deformation, ensuring reliable wearing stability. The sensor allows for online, real-time monitoring of human body temperature, encompassing both core (forehead, temple, cochlea, and exhale gas) and shell (palm and back of the hand, fingertip, and instep) temperatures. Particularly, it can accurately assess minor changes in peripheral body temperature before and after exercise, and it is capable of mapping daily patterns of body temperatures. The developed temperature sensor will provide us new materials design concepts and holds considerable promise in the fields of e-skin, disease surveillance, prediction, and diagnose.
Collapse
Affiliation(s)
- Hui Zhang
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Yixia Zhang
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Yulin Liu
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Qi Zhang
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Yunpeng Zhang
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Zhaohui Shan
- Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Taiyuan 030024, China
- College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
| | - Xinyu Liu
- College of Biomedical Engineering Taiyuan University of Technology, Taiyuan 030024, China
| | - Jiang Zhao
- College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China
| | - Gaopeng Li
- General Surgery Department, Shanxi Bethune Hospital, Taiyuan 030024, China
| | - Da-Peng Yang
- School of Rehabilitation Science and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266024, China
- College of Chemical Engineering and Materials Science, Quanzhou Normal University, Quanzhou 362000, China
| |
Collapse
|
12
|
Kumar N, Yadav RK, Umar A, Ibrahim AA, Singh S, Shahin R, Singh AP, Gupta AK, Gupta NK, Baeg JO, Dwivedi DK, Baskoutas S. Selective aerobic coupling of amines to imines using solar spectrum-responsive flower-like Nen-graphene quantum dots (GQDs) decorated with 2, 4-dinitrophenylhydrazine (PH) as a photocatalyst. CHEMOSPHERE 2023; 341:139697. [PMID: 37567274 DOI: 10.1016/j.chemosphere.2023.139697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/16/2023] [Revised: 07/09/2023] [Accepted: 07/30/2023] [Indexed: 08/13/2023]
Abstract
Indeed, the development of ecologically benign molecular fabrication methods for highly efficient graphene quantum dots-based photocatalysts is of great significant. Graphene quantum dots-based photocatalysts have promising applications in various field, including environmental remediation, energy conversion, and splitting of water. However, ensuring resource reusability and minimizing the environmental impact are crucial considerations in the development. From this perspective, attention has also been paid to the creation of easy to make solar light harvesting graphene quantum dots-based photocatalysts for synthesising pharmaceuticals and functional imines compounds. Imines are excellent significant building blocks in pharmaceutical chemistry and excellent examples of these valuable compounds' synthetic intermediates, and the environmentally friendly oxidative synthesis of imines from amines. Therefore, herein, we designed a facile and efficient condensation route to synthesize the Nen-GQDs@PH photocatalyst. This route involves coupling of 2,4-dinitrophenylhydrazine (PH) with nitrogen-enriched graphene quantum dots (Nen-GQDs). The Nen-GQDs@PH as photocatalyst functions in a highly selective and efficient manner, leading to high amines conversion efficiency to imines (95%). Our results highlight a novel and environmentally safe approach for generating highly selective imines from various types of amines, setting a new benchmark in the current research field.
Collapse
Affiliation(s)
- Neetesh Kumar
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rajesh K Yadav
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India.
| | - Ahmad Umar
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia; Department of Materials Science and Engineering, The Ohio State University, Columbus, OH, 43210, USA.
| | - Ahmed A Ibrahim
- Department of Chemistry, College of Science and Arts and Promising Centre for Sensors and Electronic Devices (PCSED), Najran University, Najran, 11001, Saudi Arabia
| | - Satyam Singh
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Rehana Shahin
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Atul P Singh
- Department of Chemistry, Chandigarh University, Mohali, 140413, India
| | - Abhishek K Gupta
- Nanoionic and Energy Storage Laboratory (NanoESL), Department of Physics and Material Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, UP, India
| | - Navneet K Gupta
- Centre for Sustainable Technologies, Indian Institute of Science, Gulmohar Marg, Mathikere, Bengaluru, 560012, India
| | - Jin Ook Baeg
- Korea Research Institute of Chemical Technology, N3, 141 Gajeong-ro, Yuseong-gu, Daejeon, 34114, South Korea.
| | - Dilip K Dwivedi
- Department of Physics and Materials Science, Madan Mohan Malaviya University of Technology, Gorakhpur, 273010, India
| | - Sotirios Baskoutas
- Department of Materials Science, University of Patras, 26500, Patras, Greece
| |
Collapse
|
13
|
Sangkaew P, Ngamaroonchote A, Karn-Orachai K. Graphene oxide-manganese oxide composite as an electrocatalyst for simultaneous detection of manganese- and chromium-contaminated water. Mikrochim Acta 2023; 190:386. [PMID: 37700059 DOI: 10.1007/s00604-023-05961-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Accepted: 08/18/2023] [Indexed: 09/14/2023]
Abstract
The development of a sensitive and selective electrochemical sensor for simultaneous quantification of manganese (Mn(II)) and chromium (Cr(VI)) using composite of graphene oxide (GO) and manganese oxide modified screen printed carbon electrode (GO-Mn2O3/SPCE) is reported for the first time. The good sensing performance is achieved by mixing GO prepared by modified Hummer's method (GO-H) with proper particle size of Mn2O3 (241 nm). The mechanism of this sensor is based on the formation of Mn-O and Cr-O on the modified electrode with assistance of oxygen moieties provided by both Mn2O3 NPs and GO. The analytical performances were investigated by measuring electrochemical signal of Mn(II) and Cr(VI) by using square-wave cathodic stripping voltammetry (SWCSV). This sensor holds low electrode-to-electrode variation (relative standard deviation (RSD) < 4%) with a good limit of detection (LOD) at about 6.67 and 11.20 μg⋅L-1 for Mn(II) and Cr(VI), respectively. Applicability of this sensor was demonstrated by measuring Mn(II) and Cr(VI) in tap water samples with recovery of 90.77-103.45% and 82.34-103.73% for Mn(II) and Cr(VI) determinations, respectively. With the contribution of both GO and Mn2O3 as electrocatalysts, this developed sensor is capable to be used for water quality monitoring in real samples.
Collapse
Affiliation(s)
- Prapaporn Sangkaew
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Aroonsri Ngamaroonchote
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand
| | - Kullavadee Karn-Orachai
- National Nanotechnology Center (NANOTEC), National Science and Technology Development Agency (NSTDA), Pathum Thani, 12120, Thailand.
| |
Collapse
|
14
|
Flack R, Aixalà-Perelló A, Pedico A, Saadi K, Lamberti A, Zitoun D. Permselectivity and Ionic Conductivity Study of Na + and Br - Ions in Graphene Oxide-Based Membranes for Redox Flow Batteries. MEMBRANES 2023; 13:695. [PMID: 37623756 PMCID: PMC10456580 DOI: 10.3390/membranes13080695] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/16/2023] [Accepted: 07/21/2023] [Indexed: 08/26/2023]
Abstract
Permselectivity of a membrane is central for the development of electrochemical energy storage devices with two redox couples, such as redox flow batteries (RFBs). In RFBs, Br3-/Br- couple is often used as a catholyte which can cross over to the anolyte, limiting the battery's lifetime. Naturally, the development of permselective membranes is essential to the success of RFBs since state-of-the-art perfluorosulfonic acid (PFSA) is too costly. This study investigates membranes of graphene oxide (GO), polyvinylpyrrolidone (PVP), and imidazole (Im) as binder and linker, respectively. The GO membranes are compared to a standard PFSA membrane in terms of ionic conductivity (Na+) and permselectivity (exclusion of Br-). The ionic conduction is evaluated from electrochemical impedance spectroscopy and the permselectivity from two-compartment diffusion cells in a four-electrode system. Our findings suggest that the GO membranes reach conductivity and permselectivity comparable with standard PFSA membranes.
Collapse
Affiliation(s)
- Raphael Flack
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan 590002, Israel; (R.F.); (K.S.)
| | - Anna Aixalà-Perelló
- Dipartimento di Scienza Applicata e Tecnologia (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy; (A.A.-P.); (A.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10140 Torino, Italy
| | - Alessandro Pedico
- Dipartimento di Scienza Applicata e Tecnologia (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy; (A.A.-P.); (A.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10140 Torino, Italy
| | - Kobby Saadi
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan 590002, Israel; (R.F.); (K.S.)
| | - Andrea Lamberti
- Dipartimento di Scienza Applicata e Tecnologia (DISAT), Politecnico di Torino, Corso Duca degli Abruzzi, 24, 10129 Torino, Italy; (A.A.-P.); (A.P.); (A.L.)
- Istituto Italiano di Tecnologia, Center for Sustainable Future Technologies, Via Livorno 60, 10140 Torino, Italy
| | - David Zitoun
- Department of Chemistry, Institute for Nanotechnology and Advanced Materials (BINA), Bar Ilan University, Ramat Gan 590002, Israel; (R.F.); (K.S.)
| |
Collapse
|
15
|
Lopes JC, Moniz T, Sampaio MJ, Silva CG, Rangel M, Faria JL. Efficient synthesis of imines using carbon nitride as photocatalyst. Catal Today 2023. [DOI: 10.1016/j.cattod.2023.114045] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/21/2023]
|
16
|
Idisi DO, Benecha EM. Crystallite Size Dependent Superparamagnetic Properties of Gold Doped Reduced Graphene Oxide Nanocomposite: An Experimental and Density Functional Theory Study. J Inorg Organomet Polym Mater 2023. [DOI: 10.1007/s10904-023-02538-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
|
17
|
Highly Selective Nitrogen-Doped Graphene Quantum Dots/Eriochrome Cyanine Composite Photocatalyst for NADH Regeneration and Coupling of Benzylamine in Aerobic Condition under Solar Light. Catalysts 2023. [DOI: 10.3390/catal13010199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023] Open
Abstract
Photocatalysis is an ecofriendly and sustainable pathway for utilizing solar energy to convert organic molecules. In this context, using solar light responsive graphene-based materials for C–N bond activation and coenzyme regeneration (nicotinamide adenine dinucleotide hydrogen; NADH) is one of the utmost important and challenging tasks in this century. Herein, we report the synthesis of nitrogen-doped graphene quantum dots (NGQDs)-eriochrome cyanine (EC) solar light active highly efficient “NGQDs@EC” composite photocatalyst for the conversion of 4-chloro benzylamine into 4-chloro benzylamine, accompanied by the regeneration of NADH from NAD+, respectively. The NGQDs@EC composite photocatalyst system is utilized in a highly efficient and stereospecific solar light responsive manner, leading to the conversion of imine (98.5%) and NADH regeneration (55%) in comparison to NGQDs. The present research work highlights the improvements in the use of NGQDs@EC composite photocatalyst for stereospecific NADH regeneration and conversion of imine under solar light.
Collapse
|
18
|
Sun W, Hong Y, Li T, Chu H, Liu J, Feng L, Baghayeri M. Biogenic synthesis of reduced graphene oxide decorated with silver nanoparticles (rGO/Ag NPs) using table olive (olea europaea) for efficient and rapid catalytic reduction of organic pollutants. CHEMOSPHERE 2023; 310:136759. [PMID: 36228729 DOI: 10.1016/j.chemosphere.2022.136759] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Revised: 09/18/2022] [Accepted: 10/02/2022] [Indexed: 06/16/2023]
Abstract
In this work, graphene oxide (GO) sheets were prepared via a facile electrochemical exfoliation of graphite in acidic medium and subsequent oxidation with potassium permanganate. The GO sheets were employed for preparation of reduced GO adorned with nanosized silver (rGO/Ag NPs) using green reduction of GO and Ag(I) via olive fruit extract as a reducing and immobilizing agent. The crystal phase, morphology, and nanostructure of the prepared catalyst were characterized by XRD, SEM, EDX, UV-Vis and Raman spectroscopy techniques. The as-prepared rGO/Ag NPs showed superior catalytic performance towards the complete reduction (up to 99%) of 4-nitrophenol (4-NPH) to 4-aminophenol (4-APH) and rhodamine B (RhB) to Leuco RhB within 180 s using NaBH4 at ambient condition. The rate constant (k) values were found to be 0.021 and 0.022 s-1 for 4-NPH and RhB reduction, respectively. In addition, the regenerated catalyst could be reused after seven cycles without losing any apparent catalytic efficiency. Accounting for the excellent catalytic capability, chemical stability and environment-friendly synthesis protocol, the rGO/Ag NPs has great potential working as a heterogeneous catalyst in the transforming harmful organic contaminants into less harmful or harmless compounds.
Collapse
Affiliation(s)
- Wen Sun
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, 215009, China
| | - Yaoliang Hong
- School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China; National & Local Joint Engineering Laboratory for Municipal Sewage Resource Utilization Technology, Suzhou University of Science and Technology, China; Jiangsu Collaborative Innovation Center of Technology and Material of Water Treatment, Suzhou University of Science and Technology, 215009, China
| | - Tian Li
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Huaqiang Chu
- State Key Laboratory of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China; Key Laboratory of Yangtze River Water Environment, Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China
| | - Junxia Liu
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China
| | - Li Feng
- School of Civil and Transportation Engineering, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Mehidi Baghayeri
- Department of Chemistry, Faculty of Science, Hakim Sabzevari University, PO. Box 397, Sabzevar, Iran
| |
Collapse
|
19
|
Pan D, Liu Q, Nichols F, Mercado R, Kuo HL, Lu JQ, Bridges F, Chen S. Impacts of ruthenium valence state on the electrocatalytic activity of ruthenium ion-complexed graphitic carbon nitride/reduced graphene oxide nanosheets towards hydrogen evolution reaction. J Colloid Interface Sci 2023; 629:591-597. [PMID: 36179578 DOI: 10.1016/j.jcis.2022.09.080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 11/21/2022]
Abstract
Design and engineering of effective electrode catalysts represents a critical first step for hydrogen production by electrochemical water splitting. Nanocomposites based on ruthenium atomically dispersed within a carbon scaffold have emerged as viable candidates. In the present study, ruthenium metal centers are atomically embedded within graphitic carbon nitride/reduced graphene oxide nanosheets by thermal refluxing. Subsequent chemical reduction/oxidation leads to ready manipulation of the ruthenium valence state, as evidenced in microscopic and spectroscopic measurements, and hence enhancement/diminishment of the electrocatalytic activity towards hydrogen evolution reaction in both acidic and alkaline media. This is largely ascribed to the increased/reduced contribution of the Ru valence electrons to the density of state near the Fermi level which dictates the binding and reduction of hydrogen. Results from this study highlight the significance of the valence state of metal centers in the manipulation and optimization of the catalytic performance of single atom catalysts.
Collapse
Affiliation(s)
- Dingjie Pan
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
| | - Qiming Liu
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
| | - Forrest Nichols
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
| | - Rene Mercado
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
| | - Han-Lin Kuo
- School of Engineering, University of California, 5200 North Lake Road, Merced, CA 95343, USA
| | - Jennifer Q Lu
- School of Engineering, University of California, 5200 North Lake Road, Merced, CA 95343, USA
| | - Frank Bridges
- Department of Physics, University of California, 1156 High Street, Santa Cruz, CA 95064, USA
| | - Shaowei Chen
- Department of Chemistry and Biochemistry, University of California, 1156 High Street, Santa Cruz, CA 95064, USA.
| |
Collapse
|
20
|
Singh S, Yadav RK, Kim TW, Pande P, Chaubey S, Singh AP. Solar-light-induced green conversion of amines into imines by lemon derived heteroatoms-doped GQDs as a green photocatalyst. MAIN GROUP CHEMISTRY 2022. [DOI: 10.3233/mgc-220094] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Graphene is one of the amazing present encroachments in current research area of science and one of the utmost fascinating materials for relevance in cutting-edge research. Herein, we designed lemon-derived heteroatoms-doped graphene quantum dots (S, N-GQDs) based photocatalyst for the first time. For the integrating reactions of amines in aerobic conditions under solar light by S, N-GQDs photocatalyst exhibit utmost higher photocatalytic activity than simple oxygen-doped graphene quantum dots (O-GQDs) due to slow recombination charges. The mechanisms accountable for the drastically increased photocatalytic activity of S, N-GQDs in solar light responsive integrating reactions of amines in aerobic conditions into the corresponding derivative of imines are also completely scrutinized.
Collapse
Affiliation(s)
- Satyam Singh
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U. P., India
| | - Rajesh K. Yadav
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U. P., India
| | - Tae Wu Kim
- Department of Chemistry, Mokpo University, Muan-gun, Jeollanam-do, Republic of Korea
| | - P.P. Pande
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U. P., India
| | - Surabhi Chaubey
- Department of Chemistry and Environmental Science, Madan Mohan Malaviya University of Technology, Gorakhpur, U. P., India
- Department of Chemistry, Chandigarh University, Mohali, Punjab, India
| | - Atul P. Singh
- Department of Chemistry, Chandigarh University, Mohali, Punjab, India
| |
Collapse
|
21
|
Qazi UY, Iftikhar R, Ikhlaq A, Riaz I, Jaleel R, Nusrat R, Javaid R. Application of Fe-RGO for the removal of dyes by catalytic ozonation process. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2022; 29:89485-89497. [PMID: 35852749 DOI: 10.1007/s11356-022-21879-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/18/2021] [Accepted: 07/01/2022] [Indexed: 06/15/2023]
Abstract
Due to continuous industrialization, the discharge of hazardous dyes has enormously disrupted the ecosystem causing environmental problems. Due to the stable recalcitrant nature of dyes, advanced catalytic ozonation processes with the latest catalyst are under investigation. Fe-RGO is an effective oxidation catalyst, and the metal loaded platform provides enhanced catalytic performance. This study aims to investigate the effectiveness of Fe-RGO/O3 process for the removal of dyes. In the current research, the application of iron-coated reduced graphene oxide (Fe-RGO) was studied as a catalyst in the heterogeneous catalytic ozonation process to remove dyes. Methylene blue (MB) was selected as a model pollutant. RGO was prepared using the improved Hummers method and was coated with iron (Fe) implying the impregnation method. The FTIR, SEM-EDX, XRD, and BET analyses of RG and Fe-RGO were performed to characterize the catalyst. The effect of various parameters such as pH (3-10), catalyst dose (0.01-0.04 g), and radical scavengers (NaHCO3, NaCl) on removal efficiency was elucidated. The result revealed an excellent catalytic efficiency of Fe-RGO in the ozonation process. At optimum conditions, 96% removal efficiency was achieved in catalytic ozonation at pH 7 with a catalyst dose of 0.02 g and ozone dose 0.5 mg/min, after 10 min. Interestingly, a slight decrease in removal efficiency was observed in the catalytic ozonation process in hydroxyl radical scavengers (NaCl and NaHCO3), which makes the proposed catalyst more applicable in real conditions. Therefore, it is concluded that Fe-RGO can be used as an excellent catalyst for the removal of dyes in real conditions where radical scavengers may be present in a significant amount.
Collapse
Affiliation(s)
- Umair Yaqub Qazi
- Department of Chemistry, College of Science, University of Hafr Al Batin, PO Box 1803, Hafr Al Batin, 39524, Kingdom of Saudi Arabia
| | - Rabia Iftikhar
- Institute of Environmental Engineering and Research, University of Engineering and Technology, GT Road, Lahore, 54890, Punjab, Pakistan
| | - Amir Ikhlaq
- Institute of Environmental Engineering and Research, University of Engineering and Technology, GT Road, Lahore, 54890, Punjab, Pakistan.
| | - Ibtsam Riaz
- Institute of Environmental Engineering and Research, University of Engineering and Technology, GT Road, Lahore, 54890, Punjab, Pakistan
| | - Rashid Jaleel
- Department of Physics, University of Engineering and Technology, GT Road, Lahore, 54890, Punjab, Pakistan
- School of Physics and Astronomy, University of Manchester, Manchester, M13 9PL, UK
| | - Rabia Nusrat
- Institute of Environmental Engineering and Research, University of Engineering and Technology, GT Road, Lahore, 54890, Punjab, Pakistan
| | - Rahat Javaid
- Renewable Energy Research Center, Fukushima Renewable Energy Institute, National Institute of Advanced Industrial Science and Technology, AIST, 2-2-9 Machiikedai, Koriyama, Fukushima, 963-0298, Japan.
| |
Collapse
|
22
|
Sharifi T, Kovačić M, Belec M, Perović K, Popović M, Radić G, Žener B, Pulitika A, Kraljić Roković M, Lavrenčič Štangar U, Lončarić Božić A, Kušić H. Effect of Functionalized Benzene Derivatives as Potential Hole Scavengers for BiVO 4 and rGO-BiVO 4 Photoelectrocatalytic Hydrogen Evolution. Molecules 2022; 27:molecules27227806. [PMID: 36431908 PMCID: PMC9695294 DOI: 10.3390/molecules27227806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Revised: 11/07/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Sustainable hydrogen production is one of the main challenges today in the transition to a green and sustainable economy. Photocatalytic hydrogen production is one of the most promising technologies, amongst which BiVO4-based processes are highly attractive due to their suitable band gap for solar-driven processes. However, the performance of BiVO4 alone in this role is often unsatisfactory. Herein we report the improvement of BiVO4 performance with reduced graphene oxide (rGO) as a co-catalyst for the photoelectrochemical water splitting (PEC-WS) in the presence of simple functionalized benzene derivatives (SFBDs), i.e., phenol (PH), benzoic acid (BA), salicylic acid (SA), and 5-aminosalicylic acid (5-ASA) as potential photogenerated hole scavengers from contaminated wastewaters. Linear sweep voltammetry and chronoamperometry, along with electrochemical impedance spectroscopy were utilized to elucidate PEC-WS performance under illumination. rGO has remarkably improved the performance of BiVO4 in this role by decreasing photogenerated charge recombination. In addition, 5-ASA greatly improved current densities. After 120 min under LED illumination, 0.53 μmol of H2 was produced. The type and concentration of SFBDs can have significant and at times opposite effects on the PEC-WS performance of both BiVO4 and rGO-BiVO4.
Collapse
Affiliation(s)
- Tayebeh Sharifi
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Marin Kovačić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
- Correspondence: (M.K.); (H.K.); Tel.: +385-1-4597-145 (M.K.); +385-1-4597-160 (H.K.)
| | - Monika Belec
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Klara Perović
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Marin Popović
- Department of Safety and Protection, Karlovac University of Applied Sciences, Trg Josipa Juraja Strossmayera 9, HR-47000 Karlovac, Croatia
| | - Gabrijela Radić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Boštjan Žener
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Anamarija Pulitika
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Marijana Kraljić Roković
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Urška Lavrenčič Štangar
- Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia
| | - Ana Lončarić Božić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
| | - Hrvoje Kušić
- Faculty of Chemical Engineering and Technology, University of Zagreb, Marulićev trg 19, HR-10000 Zagreb, Croatia
- Correspondence: (M.K.); (H.K.); Tel.: +385-1-4597-145 (M.K.); +385-1-4597-160 (H.K.)
| |
Collapse
|
23
|
Efficiency of zero-dimensional and two-dimensional graphene architectural nanocomposites for organic transformations in the contemporary environment: a review. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2022. [PMCID: PMC9610332 DOI: 10.1007/s13738-022-02678-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Graphene derivatives-based nanocatalyst finds increasing utilisation in the catalysis field for organic transformations. Researchers have been working on the development of graphene oxide, reduced graphene oxide, and graphene quantum dots with metal or metal oxide nanocomposites over the last few years. These materials exhibit excellent electrical, catalytic, optical, thermal, and magnetic properties. In particular, GO/rGO/GQDs composites assisted by metal or metal oxides have attracted broad attention for their possible applications in organic compound synthesis, drug delivery, sensors, devices, and the related areas of the environment. In this review, we have summarised GO/rGO/GQDs-metal or metal oxide composites using catalyst for organic conversions and synthesis of organic compounds in accordance with the discussion on the key problems and prospects for future study. Furthermore, there is a significant function for the catalytic efficiency of composites assisted by metal or metal oxide nanocatalyst which is categorised by graphene derivatives bases.
Collapse
|
24
|
Ramalingam G, Perumal N, Priya AK, Rajendran S. A review of graphene-based semiconductors for photocatalytic degradation of pollutants in wastewater. CHEMOSPHERE 2022; 300:134391. [PMID: 35367486 DOI: 10.1016/j.chemosphere.2022.134391] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2022] [Revised: 03/04/2022] [Accepted: 03/18/2022] [Indexed: 06/14/2023]
Abstract
Water is the lifeblood of all living things; we often overlook the fact that the water cycle and the life cycle are inextricably linked. However, it has become contaminated as a result of industrialization, which has impacted the ecosystem by emitting numerous dyes, organic solvents, petroleum products, heavy metals, chemicals, diseases, and solid wastes. The absence of treatment in reusing wastewater is the root of the issues. Hence it is essential to treat the water to preserve the ecosystem and also for human health. In recent years, graphene-based photocatalysts are attracted much in the waste water treatment process due to their outstanding physical, chemical, and mechanical properties. Since in the graphene-based photocatalyst, graphene has exceptional electron conductivity, a broad range of light absorption, a large surface area, and a high adsorption capacity. When it is integrated into metals, metal-containing nanocomposites, semiconductor nanocomposites, polymers, MXene, and other compounds, it can greatly boost the photocatalytic activity towards the photo destruction of contaminants. Hence in this review, water pollution, methods of waste water treatment, fundamental principles of photocatalysis, the photocatalytic activity of other materials in wastewater treatment, and how the photocatalytic efficiency against the removal of organic dyes can be enhanced when coalesced with graphene are detailed.
Collapse
Affiliation(s)
- Gomathi Ramalingam
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India
| | - Nagapandiselvi Perumal
- Department of Physics, Sri Sivasubramaniya Nadar College of Engineering, Chennai, 603 110, India.
| | - A K Priya
- Department of Civil Engineering, KPR Institute of Engineering and Technology, Coimbatore, India
| | - Saravanan Rajendran
- Departamento de Ingeniería Mecánica, Facultad de Ingeniería, Universidad de Tarapacá, Avda. General Velásquez, 1775, Arica, Chile.
| |
Collapse
|
25
|
Mohiuddin AK, Jeon S. Highly efficient Ag doped δ-MnO 2 decorated graphene: Comparison and application in electrochemical detection of H 2O 2. APPLIED SURFACE SCIENCE 2022; 592:153162. [PMID: 35370331 PMCID: PMC8959659 DOI: 10.1016/j.apsusc.2022.153162] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 03/18/2022] [Accepted: 03/19/2022] [Indexed: 06/14/2023]
Abstract
Cytotoxic H2O2 is an inevitable part of our life, even during this contemporary pandemic COVID-19. Personal protective equipment of the front line fighter against coronavirus could be sterilized easily by H2O2 for reuse. In this study, Ag doped δ-MnO2 nanorods supported graphene nanocomposite (denoted as Ag@δ-MnO2/G) was synthesized as a nonenzymatic electrochemical sensor for the sensitive detection of H2O2. The ternary nanocomposite has overcome the poor electrical conductivity of δ-MnO2 and also the severe aggregation of Ag NPs. Furthermore, δ-MnO2/G provided a rougher surface and large numbers of functional groups for doping more numbers of Ag atoms, which effectively modulate the electronic properties of the nanocomposite. As a result, electroactive surface area and electrical conductivity of Ag@δ-MnO2/G increased remarkably as well as excellent catalytic activity observed towards H2O2 reduction. The modified glassy carbon electrode exhibited fast amperometric response time (<2 s) in H2O2 determination. The limit of detection was calculated as 68 nM in the broad linear range (0.005-90.64 mM) with high sensitivity of 104.43 µA mM-1 cm-2. No significant interference, long-term stability, excellent reproducibility, satisfactory repeatability, practical applicability towards food samples and wastewater proved the efficiency of the proposed sensor.
Collapse
Affiliation(s)
- Abdul Kader Mohiuddin
- Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Seungwon Jeon
- Department of Chemistry and Institute of Basic Science, Chonnam National University, Gwangju 61186, Republic of Korea
| |
Collapse
|
26
|
Sadique M, Yadav S, Ranjan P, Khan R, Khan F, Kumar A, Biswas D. Highly Sensitive Electrochemical Immunosensor Platforms for Dual Detection of SARS-CoV-2 Antigen and Antibody based on Gold Nanoparticle Functionalized Graphene Oxide Nanocomposites. ACS APPLIED BIO MATERIALS 2022; 5:2421-2430. [PMID: 35522141 PMCID: PMC9113004 DOI: 10.1021/acsabm.2c00301] [Citation(s) in RCA: 31] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Accepted: 04/21/2022] [Indexed: 12/12/2022]
Abstract
In this work, we report a facile synthesis of graphene oxide-gold (GO-Au) nanocomposites by electrodeposition. The fabricated electrochemical immunosensors are utilized for the dual detection of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) antigen and SARS-CoV-2 antibody. The GO-Au nanocomposites has been characterized by UV-vis spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), cyclic voltammetry (CV), differential pulse voltammetry (DPV), and electrochemical impedance spectroscopy (EIS) for its biosensing properties. The linear detection range of the SARS-CoV-2 antigen immunosensor is 10.0 ag mL-1 to 50.0 ng mL-1, whereas that for the antibody immunosensor ranges from 1.0 fg mL-1 to 1.0 ng mL-1. The calculated limit of detection (LOD) of the SARS-CoV-2 antigen immunosensor is 3.99 ag mL-1, and that for SARS-CoV-2 antibody immunosensor is 1.0 fg mL-1 with high sensitivity. The validation of the immunosensor has also been carried out on patient serum and patient swab samples from COVID-19 patients. The results suggest successful utilization of the immunosensors with a very low detection limit enabling its use in clinical samples. Further work is needed for the standardization of the results and translation in screen-printed electrodes for use in portable commercial applications.
Collapse
Affiliation(s)
- Mohd.
Abubakar Sadique
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Shalu Yadav
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pushpesh Ranjan
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Raju Khan
- Industrial
Waste Utilization, Nano and Biomaterials, CSIR - Advanced Materials and Processes Research Institute (AMPRI), Hoshangabad Road, Bhopal 462026, India
- Academy
of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Firoz Khan
- Department
of Biochemistry, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
| | - Ashok Kumar
- Department
of Biochemistry, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
| | - Debasis Biswas
- Department
of Microbiology, All India Institute of
Medical Sciences (AIIMS), Bhopal 462020, India
| |
Collapse
|
27
|
Johnsan R, Das S, Kumar CSS. Morphology and Wettability of Microporous Copper Deposits Decorated with Silver and Graphene Oxide Nanoparticles. Chem Eng Technol 2022. [DOI: 10.1002/ceat.202100559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- R. Johnsan
- National Institute of Technology Department of Chemical Engineering 673601 Calicut India
| | - Sudev Das
- National Institute of Technology Department of Chemical Engineering 673601 Calicut India
| | - C. S. Sujith Kumar
- National Institute of Technology Department of Mechanical Engineering 673601 Calicut India
| |
Collapse
|
28
|
Sadeghi Rad T, Khataee A, Arefi-Oskoui S, Sadeghi Rad S, Orooji Y, Gengec E, Kobya M. Graphene-based ZnCr layered double hydroxide nanocomposites as bactericidal agents with high sonophotocatalytic performances for degradation of rifampicin. CHEMOSPHERE 2022; 286:131740. [PMID: 34352538 DOI: 10.1016/j.chemosphere.2021.131740] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/16/2021] [Accepted: 07/29/2021] [Indexed: 06/13/2023]
Abstract
Herein, ZnCr layered double hydroxide (ZnCr LDH), and its nanocomposites with GO and rGO were synthesized using the co-precipitation method. The samples were characterized using XRD, FT-IR, SEM, TEM, BET, and XPS techniques. The sonophotocatalytic activity of the ZnCr LDH, ZnCr LDH/GO, and ZnCr LDH/rGO was investigated via the degradation of rifampicin (RIF) in the ultrasonic bath under visible light irradiation. The synergy index of more than 1 determined for ZnCr LDH/rGO indicated the positive interaction of sonocatalysis and photocatalysis resulted by hybridizing the LDH nanosheets with rGO. The maximum sonophotocatalytic degradation efficiency of 87.3% was achieved in the presence of ZnCr LDH/rGO nanocomposite with the concentration of 1.5 g L-1 for degradation of RIF with an initial concentration of 15 mg L-1 within 60 min sonication under visible light irradiation. The addition of different scavengers indicated that hydroxyl radicals, superoxide anion radicals, and the generated holes played a dominant role in the degradation of the pollutant molecules. A possible degradation mechanism was suggested based on the intermediates. The antibacterial tests confirmed the higher antibacterial activity of ZnCr LDH/GO compared with ZnCr LDH and ZnCr LDH/rGO against Gram-positive Staphylococcus aureus.
Collapse
Affiliation(s)
- Tannaz Sadeghi Rad
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey
| | - Alireza Khataee
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran.
| | - Samira Arefi-Oskoui
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Samin Sadeghi Rad
- Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, 51666-16471, Tabriz, Iran
| | - Yasin Orooji
- College of Materials Science and Engineering, Nanjing Forestry University, No. 159, Longpan Road, Nanjing, 210037, Jiangsu, People's Republic of China
| | - Erhan Gengec
- Department of Environmental Protection Technology, Kocaeli University, 41285, Kartepe, Kocaeli, Turkey
| | - Mehmet Kobya
- Department of Environmental Engineering, Gebze Technical University, 41400, Gebze, Turkey; Department of Environmental Engineering, Kyrgyz-Turkish Manas University, 720038, Bishkek, Kyrgyzstan
| |
Collapse
|
29
|
Sadegh N, Haddadi H, Arabkhani P, Asfaram A, Sadegh F. Simultaneous elimination of Rhodamine B and Malachite Green dyes from the aqueous sample with magnetic reduced graphene oxide nanocomposite: Optimization using experimental design. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117710] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
30
|
Multifunctional oil-produced reduced graphene oxide - Silver oxide composites with photocatalytic, antioxidant, and antibacterial activities. J Colloid Interface Sci 2021; 608:294-305. [PMID: 34626976 DOI: 10.1016/j.jcis.2021.08.048] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/17/2021] [Accepted: 08/07/2021] [Indexed: 11/21/2022]
Abstract
Graphene-based nanomaterials that combine significant photocatalytic, antioxidant and antibacterial activity are very attractive candidates for biomedical and environmental applications. Conventional chemical synthesis routes may contaminate the resultant materials with toxic molecules, compromising their properties and limiting their use in biomedical applications. Ideally, to avoid any contamination, the nanomaterials should be synthesized from non-toxic precursors and reagents, e.g. foodstuff via a simple technology that does not rely on the use of hazardous chemicals yet produces materials of high quality. Here, we report an environmentally friendly, low cost reduced graphene oxide-silver-silver oxide nanocomposite with strong photocatalytic, antioxidant and antibacterial activity for environmental remediation. The reduced graphene oxide (FRGO) is synthesized from edible sunflower oil via a simple flame synthesis method. Next, silver nanoparticles (Ag/AgO/Ag2O) are produced by phytochemical reduction of AgNO3 using a reducing agent based on flavonoids from Coleus aromaticus (Mexican mint), also used in food industry. Thus-obtained FRGO-Ag/AgO/Ag2O composite is characterized using X-ray diffraction spectroscopy, scanning electron microscopy, fourier transform infrared spectroscopy (FTIR) and Raman spectroscopy. The degradation of anionic textile dye Methylene blue (MB) is used as a measure of photocatalytic activity of FRGO and FRGO/Ag/AgO/Ag2O, with solution pH, initial dye concentration, and quantity of the catalyst considered as influencing factors. FRGO-Ag/AgO/Ag2O composites show strong antioxidant activity, with improved radical inhibition as well as dye degradation properties when compared to pristine FRGO.
Collapse
|
31
|
Mazzara F, Patella B, Aiello G, O'Riordan A, Torino C, Vilasi A, Inguanta R. Electrochemical detection of uric acid and ascorbic acid using r-GO/NPs based sensors. Electrochim Acta 2021. [DOI: 10.1016/j.electacta.2021.138652] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
|
32
|
Sharma D, Thakur KK, Gupta N. Pd‐Au Supported Reduced Graphene Oxide Catalyst for Carbon‐ Hydrogen Bond Activation in Benzene. ChemistrySelect 2021. [DOI: 10.1002/slct.202101988] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Deepika Sharma
- Department: School of Advanced Chemical Sciences Institution: Shoolini University Solan Post box No. 9, Head Post Office Solan 173229, H.P. India
| | - Kamal Kishor Thakur
- Department: Chemistry Institution: Chandigarh University Gharuan 140413 Punjab India
| | - Neeraj Gupta
- Department: School of Advanced Chemical Sciences Institution: Shoolini University Solan Post box No. 9, Head Post Office Solan 173229, H.P. India
- Department: Chemistry and Chemical Sciences Institution: Central University of Himachal Pradesh Dharamshala 176206, H.P. India
| |
Collapse
|
33
|
Kavimani V, Gopal PM, Sumesh KR, Elanchezhian R. Improvement on mechanical and flame retardancy behaviour of bio-exfoliated graphene-filled epoxy/glass fibre composites using compression moulding approach. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03810-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
34
|
Kumar I, Kumar R, Gupta SS, Sharma U. C 70 Fullerene Catalyzed Photoinduced Aerobic Oxidation of Benzylamines to Imines and Aldehydes. J Org Chem 2021; 86:6449-6457. [PMID: 33886326 DOI: 10.1021/acs.joc.1c00297] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
C70 fullerene catalyzed photoinduced oxidation of benzylic amines at ambient conditions has been explored here. The developed strategy's main feature includes the additive/oxidant-free conversion of benzylic amine to corresponding imine and aldehydes. The reaction manifests broad substrate scope with excellent function group leniency and is applicable up to the gram scale. Further, symmetrical secondary amines can also be synthesized from benzylic amine in a one-pot two-step process. Various experiments and density functional theory studies revealed that the current reaction involves the generation of reactive oxygen species, single electron transfer reaction, and benzyl radical formation as key steps under photocatalytic conditions.
Collapse
Affiliation(s)
- Inder Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Rakesh Kumar
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India
| | - Shiv Shankar Gupta
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Upendra Sharma
- Chemical Technology Division, CSIR-Institute of Himalayan Bioresource and Technology, Palampur 176061, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| |
Collapse
|
35
|
Application of r-GO-MMT Hybrid Nanofillers for Improving Strength and Flame Retardancy of Epoxy/Glass Fibre Composites. ADVANCES IN POLYMER TECHNOLOGY 2021. [DOI: 10.1155/2021/6627743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The application of nanomaterials as a strengthening agent in the fabrication of polymer nanocomposites has gained significant attention due to distinctive properties which can be utilised in structural applications. In this study, reduced graphene oxide (r-GO) and montmorillonite (MMT) nanoclay were used as filler materials to fabricate hybrid epoxy-based nanocomposites. The synergistic effect of nanomaterials on flammability and mechanical behaviour of nanocomposites were studied. Results revealed that the addition of nanofiller showcases 97% and 44.5% improvement in tensile and flexural strength. However, an increment in the percentage of filler material over 0.3% exhibits a decremental mechanical property trend. Likewise, the addition of nanofiller increases the nonignition timing of the glass-fibre-reinforced epoxy composites. Fracture surface morphology displays the occurrence of the ductile fracture mechanism owing to the presence of hybrid fillers.
Collapse
|
36
|
Qumar U, Hassan J, Naz S, Haider A, Raza A, Ul-Hamid A, Haider J, Shahzadi I, Ahmad I, Ikram M. Silver decorated 2D nanosheets of GO and MoS 2serve as nanocatalyst for water treatment and antimicrobial applications as ascertained with molecular docking evaluation. NANOTECHNOLOGY 2021; 32:255704. [PMID: 33556921 DOI: 10.1088/1361-6528/abe43c] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Accepted: 02/08/2021] [Indexed: 06/12/2023]
Abstract
In this work, synthesis of graphene oxide (GO) and reduced graphene oxide (rGO) was realized through a modified Hummers route. Different concentrations (5 and 10 wt%) of Ag were doped in MoS2and rGO using a hydrothermal technique. Synthesized Ag-MoS2and Ag-rGO were evaluated through XRD that confirmed the hexagonal structure of MoS2along with the transformation of GO to Ag-rGO as indicated by a shift in XRD peaks while Mo-O bonding and S=O functional groups were confirmed with FTIR. Morphological information of GO and formation of MoS2nanopetals as well as interlayer spacing were verified through FESEM and HRTEM respectively. Raman analysis was employed to probe any evidence regarding defect densities of GO. Optical properties of GO, MoS2, Ag-rGO, and Ag-MoS2were visualized through UV-vis and PL spectroscopy. Prepared products were employed as nanocatalysts to purify industrial wastewater. Experimental results revealed that Ag-rGO and Ag-MoS2showed 99% and 80% response in photocatalytic activity. Besides, the nanocatalyst (Ag-MoS2and Ag-rGO) exhibited 6.05 mm inhibition zones againstS. aureusgram positive (G+) and 3.05 mm forE. coligram negative (G-) in antibacterial activity. To rationalize biocidal mechanism of Ag-doped MoS2NPs and Ag-rGO,in silicomolecular docking study was employed for two enzymes i.e.β-lactamase and D-alanine-D-alanine ligase B (ddlB) from cell wall biosynthetic pathway and enoyl-[acylcarrier-protein] reductase (FabI) from fatty acid biosynthetic pathway belonging toS. aureus. The present study provides evidence for the development of cost-effective, environment friendly and viable candidate for photocatalytic and antimicrobial applications.
Collapse
Affiliation(s)
- U Qumar
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - J Hassan
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - S Naz
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, People's Republic of China
| | - A Haider
- Department of Clinical Medicine and Surgery, University of Veterinary and Animal Sciences, Lahore 54000, Punjab, Pakistan
| | - A Raza
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - A Ul-Hamid
- Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran, 31261, Saudi Arabia
| | - J Haider
- Tianjin Institute of Industrial Biotechnology, Chinese Academy of Sciences, Tianjin 300308, People's Republic of China
| | - I Shahzadi
- College of Pharmacy, University of the Punjab, Lahore, 54000, Pakistan
| | - I Ahmad
- Department of Chemistry, Allama Iqbal Open University, Islamabad 44000, Pakistan
| | - M Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore, 54000, Punjab, Pakistan
| |
Collapse
|
37
|
Sharma PP, Tinh VDC, Kim D. Improved Oxidative Stability by Embedded Cerium into Graphene Oxide Nanosheets for Proton Exchange Membrane Fuel Cell Application. MEMBRANES 2021; 11:membranes11040238. [PMID: 33800616 PMCID: PMC8067057 DOI: 10.3390/membranes11040238] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 03/20/2021] [Accepted: 03/25/2021] [Indexed: 11/30/2022]
Abstract
Investigation of the collaborative effect of cerium particles embedded in graphene oxide to enhance the chemical stability of a proton exchange membrane fuel cell (PEMFC) has been carried out. Synthesis of composite membranes (Nafion-GO/Ce-x) with Nafion solution as a polymer is synthesized by a solution casting method where (x = concentration of composite). The developed hybrid material was characterized by FT-IR and X-ray diffraction (XRD) for its phase identification while the chemical structure was characterized by XPS analysis. The enhancement in the chemical stability of the incorporated hybrid material is characterized by Fenton’s test showing a radical scavenging effect. It was found that the residual weight for Nafion 212 was 92.50% after 24 h and it was 94.32% for Nafion-GO/Ce-2 and 96.49% for Nafion-GO/Ce-4, proving the suitability of composite membranes for fuel cell applications.
Collapse
Affiliation(s)
| | | | - Dukjoon Kim
- Correspondence: ; Tel.: +82-31-290-7250; Fax: +82-31-290-7270
| |
Collapse
|
38
|
Avashthi G, Singh M. Ultrasound accelerated near-edge functionalized heterogeneous graphene oxide sonocatalyst for surface optical bandwidth efficacy and in situ sonothermocatalysis. NEW J CHEM 2021. [DOI: 10.1039/d0nj06079h] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Ultrasound-accelerated optically active heterogeneous catalyst and sonochemical time driven thermodynamic dye catalysis.
Collapse
Affiliation(s)
- Gopal Avashthi
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| | - Man Singh
- School of Chemical Sciences
- Central University of Gujarat
- Gandhinagar-382030
- India
| |
Collapse
|
39
|
Yadav P, Reddy SN. Hydrothermal liquefaction of Fe-impregnated water hyacinth for generation of liquid bio-fuels and nano Fe carbon hybrids. BIORESOURCE TECHNOLOGY 2020; 313:123691. [PMID: 32580120 DOI: 10.1016/j.biortech.2020.123691] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/11/2020] [Accepted: 06/13/2020] [Indexed: 06/11/2023]
Abstract
In this work, hydrothermal liquefaction experiments of iron impregnated water hyacinth were performed with a motive to enhance bio-oil yields along with generation of nanometal carbon hybrids. Iron nanoparticles were impregnated and its metal loading was determined by ICP-MS. The impact of operating parameters like temperature, biomass to water ratio and reaction time on bio-oil yields was studied. During hydrothermal liquefaction a maximum total bio-oil yield of 38.1% was obtained at 280 °C along with formation of nanometal carbon hybrids. The light oil and heavy oil fractions were characterized by GCMS and NMR for determining the key components. The light oil mainly comprises of alkanes, alcohols and esters whereas heavy oil contains esters, ethers, carboxylic acids and phenols. XRD and XPS of Fe-impregnated water hyacinth and residues confirmed the transition of Fe+3/+2 to Fe0. TEM analysis resulted an average particle size of Fe nanoparticles around 19.6 nm.
Collapse
Affiliation(s)
- Priyanka Yadav
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India
| | - Sivamohan N Reddy
- Department of Chemical Engineering, Indian Institute of Technology Roorkee, Uttarakhand, India.
| |
Collapse
|
40
|
Tamilalagan E, Akilarasan M, Chen SM, Chen TW, Huang YC, Hao Q, Lei W. A sonochemical assisted synthesis of hollow sphere structured tin (IV) oxide on graphene oxide sheets for the low-level detection of environmental pollutant mercury in biological samples and foodstuffs. ULTRASONICS SONOCHEMISTRY 2020; 67:105164. [PMID: 32417625 DOI: 10.1016/j.ultsonch.2020.105164] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Revised: 04/30/2020] [Accepted: 05/03/2020] [Indexed: 06/11/2023]
Abstract
In modern approaches for nanomaterials synthesis, ultrasonication plays an important role in providing the larger surface area and smaller crystalline size properties that are favorable to electrochemical techniques. Herein, we report the tin (IV) oxide on graphene oxide nanoparticles were synthesized (SnO2@GO NPs) by ultrasonic methodology (UZ SONOPULS HD 3400 Ultrasonic homogenizer) with the total power of 400 W and the (frequency of 20 kHz; 140 W/dm3). The formation of as-prepared SnO2@GO NPs and its surface morphology were scrutinized over XRD, XPS, TEM, and FESEM. Besides, the sonochemically prepared SnO2@GO NPs were employed for the determination of environmental hazardous mercury (Hg). As a result, the modified electrode acquired a very low-level detection limit of 1.2 nM with a wider range of 0.01-10.41-µM and 14.52-225.4-µM for the detection of Hg. Finally, the practical applicability of SnO2@GO NPs in spiked human blood serum and tuna fish samples shows appreciable found and recovery values. .
Collapse
Affiliation(s)
- Elayappan Tamilalagan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Muthumariappan Akilarasan
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Shen-Ming Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan.
| | - Tse-Wei Chen
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan; Research and Development Center for Smart Textile Technology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Yi Chen Huang
- Department of Chemical Engineering and Biotechnology, National Taipei University of Technology, No.1, Section 3, Chung-Hsiao East Road, Taipei 106, Taiwan
| | - Qingli Hao
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China
| | - Wu Lei
- School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, PR China.
| |
Collapse
|
41
|
Yagüe C, Echevarría I, Vaquero M, Fidalgo J, Carbayo A, Jalón FA, Lima JC, Moro AJ, Manzano BR, Espino G. Non-emissive Ru II Polypyridyl Complexes as Efficient and Selective Photosensitizers for the Photooxidation of Benzylamines. Chemistry 2020; 26:12219-12232. [PMID: 32301532 DOI: 10.1002/chem.202001460] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 04/16/2020] [Indexed: 11/07/2022]
Abstract
Five new RuII polypyridyl complexes bearing N-(arylsulfonyl)-8-amidoquinolate ligands and three of their biscyclometalated IrIII congeners have been prepared and employed as photocatalysts (PCs) in the photooxidation of benzylamines with O2 . In particular, the new RuII complexes do not exhibit photoluminescence, rather they harvest visible light efficiently and are very stable in solution under irradiation with blue light. Their non-emissive behavior has been related to the low electrochemical energy gaps and rationalized on the basis of theoretical calculations (DFT analysis) that predict low S0 ←T1 energy values. Moreover, the RuII complexes, despite being non-emissive, display excellent activities in the selective photocatalytic transformation of benzylamines into the corresponding imines. The presence of an electron-withdrawing group (-CF3) on the arene ring of the N-(arylsulfonyl)-8-amidoquinolate ligand improves the photocatalytic activity of the corresponding photocatalyst. Furthermore, all the experimental evidence, including transient absorption spectroscopy measurements suggest that singlet oxygen is the actual oxidant. The IrIII analogues are considerably more photosensitive and consequently less efficient photosensitizers (PSs).
Collapse
Affiliation(s)
- Cristina Yagüe
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Igor Echevarría
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Mónica Vaquero
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Jairo Fidalgo
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Arancha Carbayo
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| | - Félix A Jalón
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas, Avda. Camilo J. Cela 10, 13071, Ciudad Real, Spain
| | - João C Lima
- Universidade NOVA de Lisboa, LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, 2829-516, Caparica, Portugal
| | - Artur J Moro
- Universidade NOVA de Lisboa, LAQV-REQUIMTE, Departamento de Química, Faculdade de Ciências e Tecnologia, 2829-516, Caparica, Portugal
| | - Blanca R Manzano
- Universidad de Castilla-La Mancha, Departamento de Química Inorgánica, Orgánica y Bioquímica, Facultad de Químicas, Avda. Camilo J. Cela 10, 13071, Ciudad Real, Spain
| | - Gustavo Espino
- Universidad de Burgos, Departamento de Química, Facultad de Ciencias, Plaza Misael Bañuelos s/n, 09001, Burgos, Spain
| |
Collapse
|
42
|
Garg D, Matai I, Garg A, Sachdev A. Tragacanth Hydrogel Integrated CeO
2
@rGO Nanocomposite as Reusable Photocatalysts for Organic Dye Degradation. ChemistrySelect 2020. [DOI: 10.1002/slct.202002041] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Deepa Garg
- Central Scientific Instruments Organization (CSIR-CSIO) Chandigarh 160030 India
- Academy of Scientific and Innovative Research CSIR-CSIO Chandigarh 160030 India
| | - Ishita Matai
- Central Scientific Instruments Organization (CSIR-CSIO) Chandigarh 160030 India
- Academy of Scientific and Innovative Research CSIR-CSIO Chandigarh 160030 India
| | - Anjali Garg
- Central Scientific Instruments Organization (CSIR-CSIO) Chandigarh 160030 India
| | - Abhay Sachdev
- Central Scientific Instruments Organization (CSIR-CSIO) Chandigarh 160030 India
- Academy of Scientific and Innovative Research CSIR-CSIO Chandigarh 160030 India
| |
Collapse
|
43
|
Raza A, Qumar U, Hassan J, Ikram M, Ul-Hamid A, Haider J, Imran M, Ali S. A comparative study of dirac 2D materials, TMDCs and 2D insulators with regard to their structures and photocatalytic/sonophotocatalytic behavior. APPLIED NANOSCIENCE 2020. [DOI: 10.1007/s13204-020-01475-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|
44
|
Ikram M, Raza A, Imran M, Ul-Hamid A, Shahbaz A, Ali S. Hydrothermal Synthesis of Silver Decorated Reduced Graphene Oxide (rGO) Nanoflakes with Effective Photocatalytic Activity for Wastewater Treatment. NANOSCALE RESEARCH LETTERS 2020; 15:95. [PMID: 32346803 PMCID: PMC7188753 DOI: 10.1186/s11671-020-03323-y] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Accepted: 04/13/2020] [Indexed: 05/21/2023]
Abstract
Graphene oxide (GO) was obtained through modified hummers method, and reduced graphene oxide (rGO) was acquired by employing heat treatment. Various concentrations (2.5, 5, 7.5, and 10 wt. %) of silver (Ag) were incorporated in GO nanosheets by adopting hydrothermal approach. Synthesized Ag decorated rGO photocatalyst Ag/rGO was characterized using X-ray diffraction (XRD) to determine phase purity and crystal structure. XRD patterns showed the formation of GO to Ag/rGO. Molecular vibration and functional groups were determined through Fourier Transform Infrared spectroscopy (FTIR). Optical properties and a decrease in bandgap with insertion of Ag were confirmed with UV-Visible (Uv-Vis) spectrophotometer and photoluminescence (PL). Electronic properties and disorders in carbon structures were investigated through Raman spectroscopy that revealed the existence of characteristic bands (D and G). Surface morphology of prepared samples was examined with field emission scanning electron microscope (FESEM). Homogeneous distribution, size, and spherical shape of Ag NPs over rGO sheets were further confirmed with the help of high-resolution transmission electron microscope (HR-TEM). Dye degradation of doped and undoped samples was examined through Uv-Vis spectra. Experimental results indicated that photocatalytic activity of Ag@rGO enhanced with increased doping ratio owing to diminished electron-hole pair recombination. Therefore, it is suggested that Ag@rGO can be used as a beneficial and superior photocatalyst to clean environment and wastewater.
Collapse
Affiliation(s)
- Muhammad Ikram
- Solar Cell Applications Research Lab, Department of Physics, Government College University Lahore, Lahore, Punjab 54000 Pakistan
| | - Ali Raza
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| | - Muhammad Imran
- State key Laboratory of Chemical Resource Engineering, Beijing Advanced Innovation Centre for Soft Matter Science and Engineering, Beijing Engineering Center for Hierarchical Catalysts, Beijing University of Chemical Technology, Beijing, 100029 China
| | - Anwar Ul-Hamid
- Center for Engineering Research, Research Institute, King Fahd University of Petroleum & Minerals, Dhahran, 31261 Saudi Arabia
| | - Atif Shahbaz
- Department of Physics, Government College University Lahore, Lahore, Punjab 54000 Pakistan
| | - Salamat Ali
- Department of Physics, Riphah Institute of Computing and Applied Sciences (RICAS), Riphah International University, 14 Ali Road, Lahore, Pakistan
| |
Collapse
|
45
|
Kumar A, Paul B, Boukherroub R, Jain SL. Highly efficient conversion of the nitroarenes to amines at the interface of a ternary hybrid containing silver nanoparticles doped reduced graphene oxide/ graphitic carbon nitride under visible light. JOURNAL OF HAZARDOUS MATERIALS 2020; 387:121700. [PMID: 31806437 DOI: 10.1016/j.jhazmat.2019.121700] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Revised: 11/12/2019] [Accepted: 11/15/2019] [Indexed: 06/10/2023]
Abstract
In this report, a ternary Ag-rGO/g-C3N4 hybrid was synthesized by a simple hydrothermal approach for the photocatalytic reduction of nitroarene compounds into their corresponding amines under visible light. Importantly, the present method did not require reducing agents, like hydrazine hydrate; instead methanol has been used as a source of electrons and protons for the photoreduction process. After grafting of Ag NPs, a significant enhancement in the efficiency of the rGO/g-C3N4 for the reduction of nitrobenzenes was observed. Under optimized experimental conditions, the conversion of nitrobenzene and yield of aniline were determined to be 99% and 98%, respectively under visible light illumination for 4 h. The nitrobenzene compounds bearing both electron donating and withdrawing groups were selectively converted into their corresponding aniline products without altering the functionality. The enhanced performance of the developed photocatalyst attributed to the effective separation of photoexcited electrons on the photocatalyst surface and their subsequent transfer for the reduction of nitrobenzene molecules.
Collapse
Affiliation(s)
- Anurag Kumar
- Chemical & Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun, 248005 India; Academy of Scientific and Innovative Research (AcSIR), New Delhi, 110001, India
| | - Bappi Paul
- Department of Pure and Applied Sciences, University of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan
| | - Rabah Boukherroub
- Univ. Lille, CNRS, Centrale Lille, ISEN, Univ. Valenciennes, UMR 8520 - IEMN, F-59000 Lille, France
| | - Suman L Jain
- Chemical & Material Sciences Division, CSIR-Indian Institute of Petroleum, Dehradun, 248005 India.
| |
Collapse
|
46
|
Gumus I, Karataş Y, Gülcan M. Silver nanoparticles stabilized by a metal–organic framework (MIL-101(Cr)) as an efficient catalyst for imine production from the dehydrogenative coupling of alcohols and amines. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00974a] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
In this paper, we present silver nanoparticles supported on a metal–organic framework (Ag@MIL-101) as a catalyst for the one-pot tandem synthesis of imines from alcohols and amines.
Collapse
Affiliation(s)
- Ilkay Gumus
- Advanced Technology Applied and Research Center
- Mersin University
- Mersin
- Turkey
- Department of Basic Sciences
| | - Yaşar Karataş
- Department of Chemistry
- Van Yüzüncü Yıl University
- Van
- Turkey
| | - Mehmet Gülcan
- Department of Chemistry
- Van Yüzüncü Yıl University
- Van
- Turkey
| |
Collapse
|
47
|
Echevarría I, Vaquero M, Quesada R, Espino G. Synthesis of α-amino nitriles through one-pot selective Ru-photocatalyzed oxidative cyanation of amines. Inorg Chem Front 2020. [DOI: 10.1039/d0qi00580k] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new family of Ru(ii) photocatalysts exhibits excellent performance in the efficient and eco-friendly one-pot preparation of α-amino nitriles from primary and secondary amines.
Collapse
Affiliation(s)
- Igor Echevarría
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- Burgos
- Spain
| | - Mónica Vaquero
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- Burgos
- Spain
| | - Roberto Quesada
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- Burgos
- Spain
| | - Gustavo Espino
- Departamento de Química
- Facultad de Ciencias
- Universidad de Burgos
- Burgos
- Spain
| |
Collapse
|