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Shad NA, Munawar A, Javed Y, Rakha A, Riaz A, Din SU, Zareef I, Sajid MM, Khan MF, Akhtar S, Salman M. In-field deployable and facile nanosensor for the detection of pesticides residues. Anal Chim Acta 2023; 1259:341204. [PMID: 37100479 DOI: 10.1016/j.aca.2023.341204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 04/07/2023] [Accepted: 04/07/2023] [Indexed: 04/28/2023]
Abstract
Local air and water should be first priority to understand the environment of any area. Different categories of contaminants behave like bottleneck situation in collection and analysis of data about abiotic factors for the understanding and resolving the environmental issues. In digital age the emerging nano technology enroll its role to meet the needs of hour. Due to increase in pesticides residues, the global health threats are on bloom because it inhibits the functionality of acetylcholinesterase (AChE) enzyme. Smart nanotechnology based system can tackle this issue and sense the pesticides residues in environment and vegetables as well. Here Au@ZnWO4 composite is reported, for accurate detection of pesticides residues in biological food and environmental samples. The fabricated unique nanocomposite was characterized by SEM, FTIR, XRD and EDX. The characterized material used for the electrochemical detection of organophosphate pesticide (chlorpyrifos), with 1 pM LoD at a signal to noise ratio of 3. The main concern of study is to help out in disease prevention, food safety and ecosystem protection.
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Affiliation(s)
- Naveed Akhtar Shad
- National Institute for Biotechnology & Genetic Engineering (NIBGE), Faisalabad, Pakistan
| | - Anam Munawar
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan.
| | - Yasir Javed
- Department of Physics, University of Agriculture (UAF), Faisalabad, Pakistan.
| | - Allah Rakha
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Ahsan Riaz
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Salah Ud Din
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Iqra Zareef
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Muhammad Munir Sajid
- Henan Key Laboratory of Photovoltaic Materials, School of Physics, Henan Normal University, Xinxiang, 453007, China
| | - Muahmmad Farhan Khan
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Sareen Akhtar
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
| | - Midhat Salman
- Department of Forensic Sciences, University of Health Sciences, Lahore, Pakistan
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Dilawar S, Albalawi K, Khan AU, Tahir K, Zaki MEA, Musad Saleh EA, Almarhoon ZM, Althagafi TM, El-Zahhar AA, El-Bialy E. Rapid photodegradation of toxic organic compounds and photo inhibition of bacteria in the presence of novel hydrothermally synthesized Ag/Mn-ZnO nanomaterial. Environ Res 2023; 231:116093. [PMID: 37178753 DOI: 10.1016/j.envres.2023.116093] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Revised: 05/04/2023] [Accepted: 05/09/2023] [Indexed: 05/15/2023]
Abstract
Purified water is the most concerning issue these days, and utmost conventional practices are allied with various downsides. Therefore, an ecologically benign and easily amicable therapeutic approach is the requirement. In this wonder, nanometer phenomena bring an innovative change to the material world. It has the potential to produce nanosized materials for wide-ranging applications. The subsequent research highlights the synthesis of Ag/Mn-ZnO nanomaterial via a one-pot hydrothermal route with an efficient photocatalytic activity against organic dyes and bacteria. The outcomes revealed that the size of the particle (4-5 nm) and dispersion of spherically shaped silver nanoparticles intensely affected by employing Mn-ZnO as a support material. Use of silver NPs as a dopant activates the active sites of the support medium and provides a higher surface area to upsurge the degradation rate. The synthesized nanomaterial was evaluated against photocatalytic activity using Methyl orange and alizarin red as model dyes and confided that more than 70% of both the dyes degraded under 100 min duration. It is well recognize that the modified nanomaterial recreates an essential role in every light-based reaction, and virtually produced highly reactive oxygen species. The synthesized nanomaterial was also evaluated against E. coli bacterium both in light and dark. The zone of inhibition in the presence of Ag/Mn-ZnO was observed both in light (18 ± 0.2 mm) and dark (12 ± 0.4 mm). The hemolytic activity shows that Ag/Mn-ZnO has very low toxicity. Hence, the prepared Ag/Mn-ZnO nanomaterial might be an effective tool against the depletion of further harmful environmental pollutants and microbes.
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Affiliation(s)
- Sundas Dilawar
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan
| | - Karma Albalawi
- Department of Chemistry, Faculty of Science, Tabuk University, Tabuk, Saudi Arabia
| | - Afaq Ullah Khan
- School of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China
| | - Kamran Tahir
- Institute of Chemical Sciences, Gomal University, D. I. Khan, KP, Pakistan.
| | - Magdi E A Zaki
- Department of Chemistry, Faculty of Science, Imam Mohammad Ibn Saud Islamic University, Riyadh, 13318, Saudi Arabia
| | - Ebraheem Abdu Musad Saleh
- Chemistry Department, College of Arts & Science, Prince Sattam Bin Abdulaziz University, Wadi Al-Dawaser, Alkharj, Saudi Arabia
| | - Zainab M Almarhoon
- Chemistry Department, College of Science, King Saud University, P.O. Box 2455, Riyadh, 11451, Saudi Arabia
| | - Talal M Althagafi
- Department of Physics, College of Science, Taif University, Taif, 21944, Saudi Arabia
| | - Adel A El-Zahhar
- Department of Chemistry, Faculty of Science, King Khalid University, Abha, 9004, Saudi Arabia
| | - E El-Bialy
- Physics Department, Samtah University College, Jazan University, Jazan, 45142, Saudi Arabia
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Atchudan R, Chandra Kishore S, Gangadaran P, Jebakumar Immanuel Edison TN, Perumal S, Rajendran RL, Alagan M, Al-Rashed S, Ahn BC, Lee YR. Tunable fluorescent carbon dots from biowaste as fluorescence ink and imaging human normal and cancer cells. Environ Res 2022; 204:112365. [PMID: 34767820 DOI: 10.1016/j.envres.2021.112365] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Revised: 11/02/2021] [Accepted: 11/03/2021] [Indexed: 05/28/2023]
Abstract
Growing global biowaste and its environmental issues challenge the need for converting biowastes into a beneficial product. Among the biowaste, here kiwi fruit (Actinidia Deliciosa) peels are considered for the preparation of carbon dots (CDs). Using a green one-pot hydrothermal-carbonization method, kiwi fruit peels were effectively converted into valuable kiwi fruit peel carbon dots (KFP-CDs). The morphology, physio-chemical and optical properties of as-synthesized KFP-CDs were analyzed using various analytical techniques such as X-ray powder diffraction, Raman spectroscopy, attenuated total reflection-Fourier transform infrared spectroscopy, field emission scanning electron microscopy, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, Ultraviolet-visible, and fluorescence spectroscopy. The KFP-CDs revealed a homogeneous spherical shape, monodispersed with an average size of 5 nm. The characterization confirms that KFP-CDs have functional groups such as -CN, -COOH, and -OH which are responsible for the easy dispersion of KFP-CDs in aqueous media. Without any preprocessing, KFP-CDs exhibit strong fluorescence upon exposure to UV light. Further, KFP-CDs displayed excitation-dependent fluorescence emission with a good quantum yield of about 18%. Thus by considering the excellent properties of KFP-CDs, KFP-CDs were used as fluorescent ink for drawing and writing without any capping/passivation agent. The pictures and words were instantaneously viewed when exposed to UV light. In addition, KFP-CDs tested for cell imaging in four human cell lines (normal and cancer cells) bestowed excellent biocompatibility and low cytotoxicity, which is important for the safe and long-term development of cellular imaging. The findings imply that KFP-CDs can be utilized as a cell labeling agent for mesenchymal stem cells, breast cancer, and thyroid cancer cells in vitro imaging. Thus, these observations revealed that investigating sustainable resource-based CDs can open up new avenues for tackling environmental issues.
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Affiliation(s)
- Raji Atchudan
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
| | - Somasundaram Chandra Kishore
- Saveetha School of Engineering, Department of Biomedical Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha Nagar, Chennai, 602 105, India
| | - Prakash Gangadaran
- BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea; Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, 41944, Republic of Korea
| | | | - Suguna Perumal
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea
| | - Ramya Lakshmi Rajendran
- Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, 41944, Republic of Korea
| | - Muthulakshmi Alagan
- Faculty of Information and Communication Science, University of Information Science and Technology "St.Paul the Apostle", Ohrid, Macedonia
| | - Sarah Al-Rashed
- Department of Botany and Microbiology, College of Science, King Saud University, P.O 2455, Riyadh, 11451, Saudi Arabia
| | - Byeong-Cheol Ahn
- BK21 FOUR KNU Convergence Educational Program of Biomedical Sciences for Creative Future Talents, Department of Biomedical Science, School of Medicine, Kyungpook National University, Daegu, 41944, Republic of Korea; Department of Nuclear Medicine, School of Medicine, Kyungpook National University, Kyungpook National University Hospital, Daegu, 41944, Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan, 38541, Republic of Korea.
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Nanda SS, Nayak P, Goutam UK, Dash S. Influence of Eu 3+ on the Structure and Photophysical Properties in (Y,Gd)F 3 Nanophosphors. J Fluoresc 2020; 31:129-139. [PMID: 33140123 DOI: 10.1007/s10895-020-02642-8] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 10/30/2020] [Indexed: 10/23/2022]
Abstract
The scientific community has shown a growing interest in relating to the lanthanide based luminescent materials and it has made an effort to develop them. Among these several luminescent materials, we have proposed to developed (Y,Gd)F3 nanophosphors doped with distinct of Eu3+ concentrations using modified hydrothermal process. The effect of co-doping of rare earth activators to the host lattice structure and morphology are investigated using different analytical techniques. The diffuse reflectance spectra reveal a tuning of optical band gap due to substitutions. From the extensive XPS analysis, Gd and Eu are found to be in a stable ionic state of +3 which is replacing Y3+ in YF3 host. Photoluminescence emission spectra of the nanophosphors are excited by near ultraviolet (UV, 393 nm) excitation. From photoluminescence study, the intensity variation is observed for emission peak at 591 nm and fluorescence quenching occurs at higher doping level. This effect subsequently explained on the frame work of local symmetry and nonradiative transfer among multipole-multipole interaction. At 393 nm excitation Eu3+ (2, 3, 5, 7, 10 at %) doped (Y, Gd) F3 show CIE chromaticity coordinates shifted to red regions with increase in Eu doping levels. Because of the longer decay time these phosphors can be used for bio-labeling and other similar applications.
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Affiliation(s)
- Sushri Sangita Nanda
- Department of Physics and Astronomy, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - Priyanka Nayak
- Department of Physics and Astronomy, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India
| | - U K Goutam
- Indus 2 Synchrotron Facility, Raja Ramanna Centre for Advanced Technology (RRCAT), Indore, Madhya Pradesh, 452013, India
| | - S Dash
- Department of Physics and Astronomy, National Institute of Technology Rourkela, Rourkela, Odisha, 769008, India.
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Joshi N, da Silva LF, Shimizu FM, Mastelaro VR, M'Peko JC, Lin L, Oliveira ON. UV-assisted chemiresistors made with gold-modified ZnO nanorods to detect ozone gas at room temperature. Mikrochim Acta 2019; 186:418. [PMID: 31187269 DOI: 10.1007/s00604-019-3532-4] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Accepted: 05/19/2019] [Indexed: 11/25/2022]
Abstract
Two kinds of flexible ozone (O3) sensors were obtained by placing pristine ZnO nanorods and gold-modified ZnO nanorods (NRs) on a bi-axially oriented poly(ethylene terephthalate) substrate. The chemiresistive sensor is operated at typically 1 V at room temperature under the UV-light illumination. The ZnO nanorods were prepared via a hydrothermal route and have a highly crystalline wurtzite structure, with diameters ranging between 70 and 300 nm and a length varying from 1 to 3 μm. The ZnO NRs were then coated with a ca. 10 nm gold layer whose presence was confirmed with microscopy analysis. This sensor is found to be superior to detect ozone at a room temperature. Typical figures of merit include (a) a sensor response of 108 at 30 ppb ozone for gold-modified ZnO NRs, and (b) a linear range that extends from 30 to 570 ppb. The sensor is stable, reproducible and selective for O3 compared to other oxidizing and reducing gases. The enhanced performance induced by the modification of ZnO nanorods with thin layer of gold is attributed to the increased reaction kinetics compared to pristine ZnO NRs. The sensing mechanism is assumed to be based on the formation of a nano-Schottky type barrier junction at the interface between gold and ZnO. Graphical abstract Room temperature, flexible UV-enhanced gold modified ZnO nanorods can detect ppb levels of ozone.
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Affiliation(s)
- Nirav Joshi
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, São Paulo, CP, 13560-970, Brazil.
- Department of Mechanical Engineering, University of California, Berkeley, CA, USA.
| | - Luís F da Silva
- Department of Physics, Federal University of São Carlos, Rodovia Washington Luis km 235, São Carlos, SP, 13565-905, Brazil
| | - Flavio M Shimizu
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, São Paulo, CP, 13560-970, Brazil
- Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), Campinas, São Paulo, 13083-970, Brazil
| | - Valmor R Mastelaro
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, São Paulo, CP, 13560-970, Brazil
| | - Jean-Claude M'Peko
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, São Paulo, CP, 13560-970, Brazil
| | - Liwei Lin
- Department of Mechanical Engineering, University of California, Berkeley, CA, USA.
| | - Osvaldo N Oliveira
- São Carlos Institute of Physics, University of São Paulo, 369, São Carlos, São Paulo, CP, 13560-970, Brazil.
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Nayak P, Kumar S, Sinha I, Singh KK. ZnO/CuO nanocomposites from recycled printed circuit board: preparation and photocatalytic properties. Environ Sci Pollut Res Int 2019; 26:16279-16288. [PMID: 30980367 DOI: 10.1007/s11356-019-04986-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/21/2018] [Accepted: 03/25/2019] [Indexed: 06/09/2023]
Abstract
Cost-effective recycling of e-waste (from computer printed circuit boards, PCB's) for the synthesis of metal oxide nanocomposites is demonstrated. Metals in electronic components of waste memory slots were leached out using nitric acid (HNO3). Compositional analyses of the filtrate obtained after leaching were 66 wt.% Cu, 27.7 wt.% Zn, and 6.2 wt.% Ni. The leached out metal salt solutions were subjected to alkaline hydrothermal treatment to synthesize nanocomposites. Two nanoparticle samples were prepared, one without any stabilizing agent and another sample with PVP as a stabilizing agent. XRD, HR-XRD, HR-TEM, UV-DRS, UV-visible spectroscopy was used to characterize the as-prepared metal oxide nanoparticles. The analysis showed the formation of ZnO/CuO nanocomposites only. No nickel oxide component was precipitated under the studied hydrothermal experimental conditions. Most of the ZnO/CuO nanocomposite particles obtained by this route consisted of fine ZnO nanostructures precipitated on CuO cores. The ZnO and CuO components exhibit both direct and indirect band gaps in the visible range. The nanocomposites demonstrate good visible light photo-Fenton methyl orange (MO) degradation by pseudo-zero order kinetics.
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Affiliation(s)
- Pritish Nayak
- Department of Metallurgical Engineering, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Sunil Kumar
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, 221005, India
| | - Indrajit Sinha
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, 221005, India.
| | - Kamalesh Kumar Singh
- Department of Metallurgical Engineering, Indian Institute of Technology (BHU), Varanasi, 221005, India
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Gholam T, Zheng LR, Wang JO, Qian HJ, Wu R, Wang HQ. Synchrotron X-ray Absorption Spectroscopy Study of Local Structure in Al-Doped BiFeO 3 Powders. Nanoscale Res Lett 2019; 14:137. [PMID: 31001702 PMCID: PMC6473020 DOI: 10.1186/s11671-019-2965-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 04/01/2019] [Indexed: 06/09/2023]
Abstract
The Al-doped BiFeO3, i.e., BFAxO powder samples with x = 0, 0.025, 0.05, and 0.1, were prepared via the hydrothermal route. The effects of Al substitution on the structural, electrical, and optical properties of BFAxO samples were investigated. It is found that the substitution of Al ions at B-site of BiFeO3 did not cause structural change and it still retains the rhombohedral perovskite structure with R3c symmetry, which was confirmed by the X-ray diffraction (XRD) and Raman measurements. X-ray absorption fine structure (XAFS) above the Fe K-edge and Bi L3-edge in BFAxO powders was also measured and analyzed. Fe ions exhibit mixed valence states (Fe2+/Fe3+) while Bi ions keep the + 3 valence state in all the samples. Fe K-edge XAFS also indicated that there was a competition between hybridization of Fe 3d and Al 3d with O 2p orbitals and occurrence of the more 4p orbitals with Al doping. The Bi L3-edge XAFS revealed that transition from 2p3/2 to 6d state increased, so did the energy of 6d state. Besides, Al ion doping affected both the nearest-neighbor and next-nearest coordination shells of Fe atom and nearest-neighbor shells of Bi atom. Ultraviolet-visible (UV-Vis) spectroscopy results show the BFAxO prepared by hydrothermal method could be an appropriate visible-light photocatalytic material.
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Affiliation(s)
- Turghunjan Gholam
- Key Laboratory of Semiconductors and Applications of Fujian Province, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen, 361005, People's Republic of China.
| | - Li Rong Zheng
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Jia Ou Wang
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Hai Jie Qian
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Rui Wu
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing, 100049, People's Republic of China
| | - Hui-Qiong Wang
- Key Laboratory of Semiconductors and Applications of Fujian Province, Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen, 361005, People's Republic of China.
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Mao G, Liu C, Du M, Zhang Y, Ji X, He Z. One-pot synthesis of the stable CdZnTeS quantum dots for the rapid and sensitive detection of copper-activated enzyme. Talanta 2018; 185:123-131. [PMID: 29759178 DOI: 10.1016/j.talanta.2018.03.054] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Revised: 03/15/2018] [Accepted: 03/16/2018] [Indexed: 10/17/2022]
Abstract
Galactose oxidase is a copper-activated enzyme and have a vital role in metabolism of galactose. Much of the work is focused on determining the amount of galactose in the blood rather than measuring the amount of galactose oxidase to urge the galactosemia patients to restrict milk intake. Here, a simple and effective method was developed for Cu2+ and copper-activated enzyme detection based on homogenous alloyed CdZnTeS quantum dots (QDs). Meso- 2,3-dimercaptosuccinic acid (DMSA) was used as the reducing agent for preparing QDs and the highest quantum yield of CdZnTeS QDs was 69.4%. In addition, the as-prepared CdZnTeS QDs show superior fluorescence properties, such as good photo-/chemical stability. The DMSA was the surface ligand of the QDs, containing abundant -SH and -COOH, thus the surface ligands have a high affinity with Cu2+. Therefore, this developed probe can be applied for Cu2+ and galactose oxidase detection and shows a good sensitivity in the buffer. Then, this probe was successfully used for Cu2+ and galactose oxidase detection in real samples with the satisfactory results. The proposed fluorescence quenching strategy gives a new and simple insight for enzyme assay without the enzyme-catalyzed reaction.
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Affiliation(s)
- Guobin Mao
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Chen Liu
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Mingyuan Du
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Yuwei Zhang
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Xinghu Ji
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China
| | - Zhike He
- Key Laboratory of Analytical Chemistry for Biology and Medicine (Ministry of Education), College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, People's Republic of China.
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Mao P, Qi L, Liu X, Liu Y, Jiao Y, Chen S, Yang Y. Synthesis of Cu/Cu 2O hydrides for enhanced removal of iodide from water. J Hazard Mater 2017; 328:21-28. [PMID: 28076769 DOI: 10.1016/j.jhazmat.2016.12.065] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/09/2016] [Revised: 12/30/2016] [Accepted: 12/31/2016] [Indexed: 06/06/2023]
Abstract
In order to improve the removal capacity of Cu2O for I- anions from water, Cu/Cu2O hybrids have been synthesized through a facile hydrothermal route, characterized by using SEM, XRD, XPS, and applied to remove I- anions under different experimental environments. The results demonstrate that the Cu content and morphology of samples can be tuned by the adding amount of ammonia. Meanwhile, the possible crystalline mechanism, Cu2O formed firstly and then metallic Cu generated, was presented. With the increasing of Cu doped amount, the removal capacity of Cu/Cu2O hybrids increased significantly from 0.02mmolg-1 to 0.18mmolg-1. Furthermore, a reaction mechanism of I- anions and Cu2O, which generated from the disproportionation reaction of metallic Cu and CuO, has been proposed according to the characterization analyses of the composites before and after adsorption, explaining the highly efficient removal of I- anions. In addition, Cu/Cu2O hybrids showed excellent selectivity for I- anions in the presence of large concentrations of competitive anions such as SO42- and NO3- and could work in an acidic and neutral environment. This study is hopefully to prompt Cu2O to grow up to be a new and highly efficient adsorbent for the removal of iodide from solutions.
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Affiliation(s)
- Ping Mao
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Liye Qi
- Beijing National Laboratory for Molecular Sciences, Fundamental Science Laboratory on Radiochemistry & Radiation Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xiaodong Liu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
| | - Ying Liu
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yan Jiao
- Jiangsu Engineering Technology Research Center of Environmental Cleaning Materials (CEM), School of Environmental Sciences and Engineering, Nanjing University of Information Science and Technology, Nanjing 210004, China
| | - Shouwen Chen
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
| | - Yi Yang
- School of Environmental and Biological Engineering, Nanjing University of Science and Technology, Nanjing 210094, China.
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