1
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Chen Y, Bai X, Zhang Y, Zhao Y, Ma H, Yang Y, Wang M, Guo Y, Li X, Wu T, Zhang Y, Kong H, Zhao Y, Qu H. Zingiberis rhizoma-based carbon dots alter serum oestradiol and follicle-stimulating hormone levels in female mice. ARTIFICIAL CELLS, NANOMEDICINE, AND BIOTECHNOLOGY 2024; 52:12-22. [PMID: 37994799 DOI: 10.1080/21691401.2023.2276770] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 10/18/2023] [Indexed: 11/24/2023]
Abstract
Chinese herbs contain substances that regulate female hormones. Our study confirmed that Zingiberis rhizoma carbonisata contains Zingiberis rhizoma-based carbon dots (ZR-CDs), which exert regulatory effects on serum oestradiol and FSH in mice and show impacts on endometrial growth and follicular development that potentially affect the ability of female fertility. ZR-CDs were characterized to clarify the microstructure, optical features, and functional group characteristics. It shows that ZR-CDs are spherical carbon nanostructures ranging from 0.97 to 2.3 nm in diameter, with fluorescent properties and a surface rich in functional groups. We further investigated the impact of ZR-CDs on oestradiol and FSH in serum, growth, and the development of ovarian and uterine using normal female mice and exogenous oestradiol intervention model. It was observed that ZR-CDs accelerated oestrogen metabolism and attenuated oestradiol-induced endometrial hyperplasia. Simultaneously, ZR-CDs triggered an increase in FSH, even in the presence of high-serum oestradiol that inhibits FSH secretion. Our findings suggest that ZR-CDs could be a potential therapeutic treatment for anovulatory menstruation.
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Affiliation(s)
- Yumin Chen
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Xue Bai
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Ying Zhang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yafang Zhao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Huagen Ma
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yunbo Yang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Meijun Wang
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yinghui Guo
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Xiaopeng Li
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Tong Wu
- School of Chinese Materia Medica, Beijing University of Chinese Medicine, Beijing, China
| | - Yue Zhang
- School of Life Sciences, Beijing University of Chinese Medicine, Beijing, China
| | - Hui Kong
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Yan Zhao
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Huaihua Qu
- Centre of Scientific Experiment, Beijing University of Chinese Medicine, Beijing, China
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2
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Xu DX, Zhao YM, Chen HX, Lu ZY, Tian YF, Xin S, Li G, Guo YG. Reduced Volume Expansion of Micron-Sized SiO x via Closed-Nanopore Structure Constructed by Mg-Induced Elemental Segregation. Angew Chem Int Ed Engl 2024; 63:e202401973. [PMID: 38520059 DOI: 10.1002/anie.202401973] [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: 01/28/2024] [Revised: 03/04/2024] [Accepted: 03/22/2024] [Indexed: 03/25/2024]
Abstract
The inherently huge volume expansion during Li uptake has hindered the use of Si-based anodes in high-energy lithium-ion batteries. While some pore-forming and nano-architecting strategies show promises to effectively buffer the volume change, other parameters essential for practical electrode fabrication, such as compaction density, are often compromised. Here we propose a new in situ Mg doping strategy to form closed-nanopore structure into a micron-sized SiOx particle at a high bulk density. The doped Mg atoms promote the segregation of O, so that high-density magnesium silicates form to generate closed nanopores. By altering the mass content of Mg dopant, the average radii (ranged from 5.4 to 9.7 nm) and porosities (ranged from 1.4 % to 15.9 %) of the closed pores are precisely adjustable, which accounts for volume expansion of SiOx from 77.8 % to 22.2 % at the minimum. Benefited from the small volume variation, the Mg-doped micron-SiOx anode demonstrates improved Li storage performance towards realization of a 700-(dis)charge-cycle, 11-Ah-pouch-type cell at a capacity retention of >80 %. This work offers insights into reasonable design of the internal structure of micron-sized SiOx and other materials that undergo conversion or alloying reactions with drastic volume change, to enable high-energy batteries with stable electrochemistry.
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Affiliation(s)
- Di-Xin Xu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Yu-Ming Zhao
- Beijing iAmetal New Energy Technology Co., Ltd, Beijing, 100081, P. R. China
| | - Han-Xian Chen
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Zhuo-Ya Lu
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Yi-Fan Tian
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Sen Xin
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
| | - Ge Li
- Beijing iAmetal New Energy Technology Co., Ltd, Beijing, 100081, P. R. China
| | - Yu-Guo Guo
- CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Laboratory for Molecular Sciences (BNLMS) Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, 100190, P. R. China
- School of Chemical Sciences, University of Chinese Academy of Sciences (UCAS), Beijing, 100049, P. R. China
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3
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Ullal N, Mehta R, Sunil D. Separation and purification of fluorescent carbon dots - an unmet challenge. Analyst 2024; 149:1680-1700. [PMID: 38407365 DOI: 10.1039/d3an02134c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/27/2024]
Abstract
Literature reports demonstrate versatile optical applications of fluorescent carbon dots (CDs) in biological imaging, full-color solid-state lighting, optoelectronics, sensing, anticounterfeiting and so on. The fluorescence associated with CDs may originate significantly from byproducts generated during their synthesis, which need to be eliminated to achieve error-free results. The significance of purification, specifically for luminescence-based characterizations, is highly critical and imperative. Thus, there is a pressing demand to implement consistent and adequate purification strategies to reduce sample complexity and thereby realize reliable results that can provide a tactical steppingstone towards the advancement of CDs as next-generation optical materials. The article focuses on the mechanism of origin of fluorescence from CDs and further demonstrates the different purification approaches including dialysis, centrifugation, filtration, solvent extraction, chromatography, and electrophoresis that have been adopted by various researchers. Furthermore, the fundamental separation mechanism, as well as the advantages and limitations of each of these purification techniques are discussed. The article finally provides the critical challenges of these purification techniques that need to be overcome to obtain homogeneous CD fractions that demonstrate coherent and reliable optical features for suitable applications.
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Affiliation(s)
- Namratha Ullal
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India.
| | - Riya Mehta
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India.
| | - Dhanya Sunil
- Department of Chemistry, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal-576104, Karnataka, India.
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4
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Garg R, Prasad D. Carbon dots and their interactions with recognition molecules for enhanced nucleic acid detection. Biochem Biophys Res Commun 2023; 680:93-107. [PMID: 37738905 DOI: 10.1016/j.bbrc.2023.09.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 09/04/2023] [Accepted: 09/14/2023] [Indexed: 09/24/2023]
Abstract
Carbon Dots (C-dots) have exceptional fluorescence and incident wavelength alteration capabilities because of their π-π* electron transitions between the surface-trapped charges. They have clear, considerate and cost-effective applications in the domain of bio-sensing, optical imaging, medical diagnostics, fluorescence chemotherapy, forensics, and environmentology. Advances in the production process of C-dots can change their optical and chemical characteristics, allowing them to interact with a variety of chemicals and ions that can be exploited for the DNA detection in point-of-care devices. In the current scenario of pathogenic disease prevention, metagenomics and industrial processes, alternative genetic material identification is critical. This review focuses on the existing carbon dots-based DNA detection technologies and their interactions with other components such as metallic salts, dyes, and biological chemicals based on their surface charge distribution (positive or negative) employed in the DNA diagnostic devices and biosensors with their operating mechanism regarding their target component. These intriguing scientific discoveries and technologies will be extensively examined to translate them into real-world solutions which will have a significant societal and economic impact on overall well-being and innovation.
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Affiliation(s)
- Rishabh Garg
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India
| | - Dinesh Prasad
- Department of Bioengineering and Biotechnology, Birla Institute of Technology, Mesra, Ranchi, Jharkhand, 835215, India.
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5
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Bao H, Liu Y, Li H, Qi W, Sun K. Luminescence of carbon quantum dots and their application in biochemistry. Heliyon 2023; 9:e20317. [PMID: 37790961 PMCID: PMC10543222 DOI: 10.1016/j.heliyon.2023.e20317] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Revised: 08/17/2023] [Accepted: 09/19/2023] [Indexed: 10/05/2023] Open
Abstract
Similar to fullerenes, carbon nanotubes and graphene, carbon dots (CDs) are causing a lot of research work in their own right. CDs are a type of surface-passivated quantum dot that contain carbon atoms. Their distinctive characteristics, such as luminescent emission that varies with size and wavelength, resistance to photobleaching, easy biological binding, lack of toxicity, and economical production without the need for intricate synthetic processes, have led to a noteworthy surge in attention within the research community. Different techniques can be utilized to create these CDs, spanning from basic candle burning to laser ablation. This review article delves into the principles of fluorescence technology, providing insights into how different synthesis methods of quantum dots impact their luminescent properties. Additionally, it highlights the latest applications of quantum dots in catalysis and biomedical fields, with special emphasis on the current status of luminescent properties in biology and chemistry. Towards the end, the article discusses the limitations of quantum dots in current practical applications, pointing out that CDs hold promising potential for future applications.
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Affiliation(s)
- Haili Bao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - Yihao Liu
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
| | - He Li
- Beijing University of Chemical Technology, Beijing, China
| | - Wenxin Qi
- School of Life Sciences, Shanghai University, Shanghai, China
| | - Keyan Sun
- Department of General Surgery, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, 200025, China
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6
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Li Y, Huang M, Xiang W, Wu X, Zhou T. Carbon quantum dots can enable efficient photochemical interfacial activation of molecular oxygen in iron oxides/oxalate system. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123303] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
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7
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Qin S, Sun H, Wan X, Wu Y, Lin X, Kan H, Hou D, Zheng Z, He X, Liu C. Carboxymethylcellulose reinforced starch films and rapid detection of spoiled beverages. Front Bioeng Biotechnol 2023; 10:1099118. [PMID: 36686261 PMCID: PMC9852863 DOI: 10.3389/fbioe.2022.1099118] [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: 11/15/2022] [Accepted: 12/20/2022] [Indexed: 01/08/2023] Open
Abstract
The integrity of the packaging of a liquid foodstuff makes it difficult to detect spoilage. Therefore, it is important to develop a sensitive, fast and real-time material for liquid food detection. CMC, as lignocellulose derivatives and starch are widely used in the food industry. In this study, starch films with pH-responsive properties are successfully prepared from full-component starch and corn amylopectin (CA) by adding CMC. The effects of CMC on the mechanical properties, morphology characteristics, physical and chemical structures, stability and pH responsiveness of the starch films are analyzed. The starch/CMC-1.0 g composite films display good electrical conductivity and reduce the resistance of the composite film by two orders of magnitude. The composite films have pH response ability; in the simulation of orange juice spoilage experiment, the CA/CMC composite film has a more sensitive current response and was more suitable for the application to liquid food quality detection. Additionally, the starch/CMC composite films have potential applications for rapid detection and real-time monitoring of the safety of liquid food.
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Affiliation(s)
- Shijiao Qin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | - Hao Sun
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | - Xiaoli Wan
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China,Lincang Academy of Forestry Sciences, Lincang, China
| | - Yujia Wu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | - Xu Lin
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | - Huan Kan
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | - Defa Hou
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China
| | | | - Xiahong He
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China,*Correspondence: Xiahong He, ; Can Liu,
| | - Can Liu
- National Joint Engineering Research Center for Highly-Efficient Utilization Technology of Forestry Resources, Southwest Forestry University, Kunming, China,*Correspondence: Xiahong He, ; Can Liu,
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8
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Silva V, Invêncio I, Silva CP, Otero M, Lima DLD. Photodegradation of oxolinic acid in aquaculture effluents under solar irradiation: is it possible to enhance efficiency by the use of TiO 2/carbon quantum dots composites? CHEMOSPHERE 2022; 308:136522. [PMID: 36150486 DOI: 10.1016/j.chemosphere.2022.136522] [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: 07/11/2022] [Revised: 09/14/2022] [Accepted: 09/15/2022] [Indexed: 06/16/2023]
Abstract
Antibiotics, such as oxolinic acid (OXA), in aquaculture effluents contribute to the dissemination of antimicrobial resistance, which makes it urgent to develop efficient and sustainable processes for their removal. Aiming a photocatalytic degradation under solar radiation, different carbon quantum dots (CQDs) were produced in this work through a bottom-up hydrothermal methodology and incorporated into TiO2 by a simple calcination method. A total of thirteen materials were synthesized and tested for OXA photocatalytic removal from synthetic and real matrices. Among them, CQDs produced with citric acid and incorporated into TiO2 at 4% (w/w) (TiO2/CQDs-CA 4% (w/w)) were the most efficient photocatalysts, providing an OXA half-life time (t1/2) decrease of 91%, 79% and 85% in phosphate buffer solution (PBS), synthetic sea salts (SSS) and brackish aquaculture effluent (BAE), respectively. Therefore, the herein synthesized TiO2/CQDs-CA 4% (w/w) composites have shown to be promising materials for a sustainable solar-driven removal of antibiotics from aquaculture effluents.
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Affiliation(s)
- Valentina Silva
- CESAM & Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal; CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Inês Invêncio
- Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Carla Patrícia Silva
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal
| | - Marta Otero
- CESAM & Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal; Departmento de Química y Física Aplicadas, Universidad de León, Campus de Vegazana, 24071, León, Spain
| | - Diana L D Lima
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193, Aveiro, Portugal.
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9
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Ion-Modified Starch Film Enables Rapid Detection of Spoiled Fruit Juices. Int J Mol Sci 2022; 23:ijms232314732. [PMID: 36499058 PMCID: PMC9736294 DOI: 10.3390/ijms232314732] [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: 10/25/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/29/2022] Open
Abstract
Juice, as a liquid foodstuff, is subject to spoilage and damage due to complications during transport and storage. The appearance of intact outer packaging often makes spoilage and damage difficult to detect. Therefore, it of particular importance to develop a fast, real-time material to evaluate liquid foodstuffs. In this paper, starch films with pH response characteristics are successfully prepared by inorganic ion modification by utilizing whole starch and amylopectin as raw materials. The mechanical properties, stability properties, hydrophilic properties and pH electrical signal response indices of the films are analyzed and measured. The films exhibit good electrical conductivity values with 1.0 mL of ion addition (10 mmol/L), causing the composite film to respond sensitively to solutions with varying pH values. In the test of spoiled orange juice, the full-component corn starch (CS) film has more sensitive resistance and current responses, which is more conducive for applications in the quality monitoring of juice. The results indicate that modified starch films can potentially be applied in the real-time monitoring of the safety of liquid foodstuffs.
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10
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Yadav N, Gaikwad RP, Mishra V, Gawande MB. Synthesis and Photocatalytic Applications of Functionalized Carbon Quantum Dots. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nisha Yadav
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh-201313, India
| | - Rahul P. Gaikwad
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai - Marathwada Campus, Jalna-431203, India
| | - Vivek Mishra
- Amity Institute of Click Chemistry Research and Studies, Amity University, Noida, Uttar Pradesh-201313, India
| | - Manoj B. Gawande
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology, Mumbai - Marathwada Campus, Jalna-431203, India
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11
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Tan W, Liang Y, Xu Y, Wang M. Structural-controlled formation of nano-particle hematite and their removal performance for heavy metal ions: A review. CHEMOSPHERE 2022; 306:135540. [PMID: 35779679 DOI: 10.1016/j.chemosphere.2022.135540] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2022] [Revised: 06/20/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
Hematite is ubiquitous in nature and holds great promise for a wide variety of applications in many frontiers of environmental issues such as heavy metal remediation in environment. Over the past decades, numerous efforts have been made to control and tailor the crystal structures of hematite to improve its adsorption performance for heavy metal ions (HMIs). It is now well established that the adsorption behavior of hematite nanocrystals is strongly affected by their particle sizes, crystal facet contributions, and defective structures. This review examined the size- and facet-dependent hematite, as well as the defective hematite according to their fabrication methods and growth mechanisms. Furthermore, the adsorption performance of various hematite particles for HMIs were introduced and compared to clarify the structure-active relationships of hematite. We also overviewed the advances in charge distribution (CD)-multisite complexation (MUSIC) modeling studies about the HMIs adsorption at the hematite-water interface and the binding parameters. The Present review systematically describes how the formation conditions impact the structural and surface properties of hematite particles, thereby providing new strategies for enhancing the performance of hematite for environmental remediation.
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Affiliation(s)
- Wenfeng Tan
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China.
| | - Yu Liang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China; Tropical Crops Genetic Resources Institute, Chinese Academy of Tropical Agricultural Sciences, Haikou, 571101, China
| | - Yun Xu
- Soil Chemistry and Chemical Soil Quality Group, Wageningen University, 6708 PB, Wageningen, the Netherlands
| | - Mingxia Wang
- State Environmental Protection Key Laboratory of Soil Health and Green Remediation, College of Resources and Environment, Huazhong Agricultural University, Wuhan, 430070, China
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12
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M P A, Pardhiya S, Rajamani P. Carbon Dots: An Excellent Fluorescent Probe for Contaminant Sensing and Remediation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2105579. [PMID: 35001502 DOI: 10.1002/smll.202105579] [Citation(s) in RCA: 30] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2021] [Revised: 11/08/2021] [Indexed: 06/14/2023]
Abstract
Pollution-induced degradation of the environment is a serious problem for both developing and developed countries. Existing remediation methods are restricted, necessitating the development of novel remediation technologies. Nanomaterials with unique characteristics have recently been developed for remediation. Quantum dots (QDs) are semiconductor nanoparticles (1-10 nm) with optical and electrical characteristics that differ from bigger particles owing to quantum mechanics, making them intriguing for sensing and remediation applications. Carbon dots (CDs) offer better characteristics than typical QDs, such as, CdSe QDs in terms of contaminant sensing and remediation. Non-toxicity, chemical inertness, photo-induced electron transfer, good biocompatibility, and adjustable photoluminescence behavior are all characteristics of CDs. CDs are frequently made from sustainable raw materials as they are cost-effective, environmentally compactable, and excellent in reducing waste generation. The goal of this review article is to briefly describe CDs fabrication methods, to deeply investigate the criteria and properties of CDs that make them suitable for sensing and remediation of contaminants, and also to highlight recent advances in their use in sensing and remediation of contaminants.
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Affiliation(s)
- Ajith M P
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Sonali Pardhiya
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
| | - Paulraj Rajamani
- School of Environmental Sciences, Jawaharlal Nehru University, New Delhi, 110067, India
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13
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M A, John BK, Chacko AR, Mohan C, Mathew B. A Review on Carbon Quantum Dot Based Semiconductor Photocatalysts for the Abatement of Refractory Pollutants. Chemphyschem 2022; 23:e202100873. [PMID: 35320623 DOI: 10.1002/cphc.202100873] [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: 12/08/2021] [Revised: 03/15/2022] [Indexed: 11/10/2022]
Abstract
Photocatalysis is a green approach frequently utilised to eliminate a variety of environmentally hazardous refractory pollutants. Accordingly, the modification of semiconductor photocatalysts with Carbon Quantum Dots (CQDs) is of great importance for the treatment of such pollutants due to their attractive physical and chemical properties. CQDs are a perfect candidate to handle photocatalysts of high-performance since they operate as co-catalysts and as visible light harvesters. The higher separation rate of electron-hole pairs in the photocatalytic system is attributable to better photodegradation efficiency. This review classifies CQD based photocatalysts as pure, doped and composite materials and discusses the specific advantages of CQDs in visible light-driven photocatalysis. In this work, the versatile roles of CQDs in CQD-based photocatalytic systems are thoroughly discussed and s u mmarised.
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Affiliation(s)
- Athulya M
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Bony K John
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Anu Rose Chacko
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Chitra Mohan
- Mahatma Gandhi University, School of Chemical Sciences, INDIA
| | - Beena Mathew
- Mahatma Gandhi University, School Of Chemical Sciences, Priyadarshini Hills PO, Kottayam, 686560, Kottayam, INDIA
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14
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Sawalha S, Assali M, Nasasrah A, Salman M, Nasasrah M, Jitan M, Hilal HS, Zyuod A. Optical properties and photoactivity of carbon nanodots synthesized from olive solid wastes at different carbonization temperatures. RSC Adv 2022; 12:4490-4500. [PMID: 35425496 PMCID: PMC8981074 DOI: 10.1039/d1ra09273a] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Accepted: 01/24/2022] [Indexed: 12/11/2022] Open
Abstract
Carbon nanodots (CNDs) have many fascinating properties, such as optical properties (UV-Visible absorption and fluorescence emission), which make them good candidates in many applications, such as photocatalysts for the degradation of several organic pollutants. This study aims to synthesize CNDs from olive solid wastes at different carbonization temperatures from 300 to 900 °C and study the effect on the optical properties of the CNDs, such UV-Vis, fluorescence, quantum yield, and energy bandgap, in addition to the influence on the photoactivity of the CNDs as photocatalysts for the degradation of methylene blue (MB). CNDs were prepared from olive solid wastes (OSWs) by pyrolysis at different temperatures (300-900 °C) for conversion to carbonized material, and then oxidized chemically in the presence of hydrogen peroxide (H2O2). It was found that an increase in the carbonization temperature of the OSWs leads to an increase in the product yield with a maximum value at 500 °C, and it then decreased dramatically. On the other hand, a decrease in fluorescence due to the diminishment of oxygen groups and the destruction of the surface of the CNDs was observed. The higher quantum yield (5.17%) and bandgap (2.77 eV) were achieved for CNDs prepared from OSWs that carbonized at 300 °C. The rate and degradation efficiency of MB were studied with the different synthesized CNDs, and it was found that an increase in the carbonization temperature leads to a decrease in the rate and degradation efficiency of MB, with the highest degradation rate of 0.0575 min-1 and degradation efficiency of 100% after 120 minutes of light irradiation being realized for the sample carbonized at 300 °C.
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Affiliation(s)
- Shadi Sawalha
- Department of Chemical Engineering, An-Najah National University Nablus Palestine
| | - Mohyeddin Assali
- Department of Pharmacy, Faculty of Medicine and Health Sciences, An Najah National University Nablus Palestine
| | - Ameerah Nasasrah
- Department of Chemical Engineering, An-Najah National University Nablus Palestine
| | - Maha Salman
- Department of Chemical Engineering, An-Najah National University Nablus Palestine
| | - Majd Nasasrah
- Department of Chemical Engineering, An-Najah National University Nablus Palestine
| | - Madleen Jitan
- Department of Chemical Engineering, An-Najah National University Nablus Palestine
| | - Hikmat S Hilal
- Department of Chemistry, Faculty of Science, An-Najah National University Nablus Palestine
| | - Ahed Zyuod
- Department of Chemistry, Faculty of Science, An-Najah National University Nablus Palestine
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Jiang H, Hu Y, Jiangy Y. Synthesis and flame inhibition efficiency of a novel Fe-based metal complex with phosphorus-containing structure. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.122975] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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Louros VL, Ferreira LM, Silva VG, Silva CP, Martins MA, Otero M, Esteves VI, Lima DLD. Photodegradation of Aquaculture Antibiotics Using Carbon Dots-TiO 2 Nanocomposites. TOXICS 2021; 9:toxics9120330. [PMID: 34941763 PMCID: PMC8704068 DOI: 10.3390/toxics9120330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 11/16/2022]
Abstract
In this work, carbon dots (CD) were synthesized and coupled to titanium dioxide (TiO2) to improve the photodegradation of antibiotics in aquaculture effluents under solar irradiation. Oxolinic acid (OXA) and sulfadiazine (SDZ), which are widely used in aquaculture, were used as target antibiotics. To prepare nanocomposites of CD containing TiO2, two modes were used: in-situ (CD@TiO2) and ex-situ (CD/TiO2). For CD synthesis, citric acid and glycerol were used, while for TiO2 synthesis, titanium butoxide was the precursor. In ultrapure water (UW), CD@TiO2 and CD/TiO2 showed the largest photocatalytic effect for SDZ and OXA, respectively. Compared with their absence, the presence of CD@TiO2 increased the photodegradation of SDZ from 23 to 97% (after 4 h irradiation), whereas CD/TiO2 increased the OXA photodegradation from 22 to 59% (after 1 h irradiation). Meanwhile, in synthetic sea salts (SSS, 30‰, simulating marine aquaculture effluents), CD@TiO2 allowed for the reduction of SDZ’s half-life time (t1/2) from 14.5 ± 0.7 h (in absence of photocatalyst) to 0.38 ± 0.04 h. Concerning OXA in SSS, the t1/2 remained the same either in the absence of a photocatalyst or in the presence of CD/TiO2 (3.5 ± 0.3 h and 3.9 ± 0.4 h, respectively). Overall, this study provided novel perspectives on the use of eco-friendly CD-TiO2 nanocomposites for the removal of antibiotics from aquaculture effluents using solar radiation.
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Affiliation(s)
- Vitória L. Louros
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
| | - Liliana M. Ferreira
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
| | - Valentina G. Silva
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
- CESAM & Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal;
| | - Carla Patrícia Silva
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
| | - Manuel A. Martins
- CICECO & Department of Materials and Ceramic Engineering, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal;
| | - Marta Otero
- CESAM & Department of Environment and Planning, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal;
| | - Valdemar I. Esteves
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
| | - Diana L. D. Lima
- CESAM & Department of Chemistry, University of Aveiro, Campus de Santiago, 3810-193 Aveiro, Portugal; (V.L.L.); (L.M.F.); (V.G.S.); (C.P.S.); (V.I.E.)
- Correspondence:
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Vyas Y, Chundawat P, Dharmendra, Punjabi PB, Ameta C. Green and Facile Synthesis of Luminescent CQDs from Pomegranate Peels and its Utilization in the Degradation of Azure B and Amido Black 10B by Decorating it on CuO Nanorods. ChemistrySelect 2021. [DOI: 10.1002/slct.202102156] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Yogeshwari Vyas
- Department of Chemistry Photochemistry Laboratory University College of Science M. L. Sukhadia University Udaipur 313001 (Raj. INDIA
| | - Priyanka Chundawat
- Department of Chemistry Photochemistry Laboratory University College of Science M. L. Sukhadia University Udaipur 313001 (Raj. INDIA
| | - Dharmendra
- Department of Chemistry Photochemistry Laboratory University College of Science M. L. Sukhadia University Udaipur 313001 (Raj. INDIA
| | - Pinki B. Punjabi
- Department of Chemistry Photochemistry Laboratory University College of Science M. L. Sukhadia University Udaipur 313001 (Raj. INDIA
| | - Chetna Ameta
- Department of Chemistry Photochemistry Laboratory University College of Science M. L. Sukhadia University Udaipur 313001 (Raj. INDIA
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Khurram R, Wang Z, Ehsan MF. α-Fe 2O 3-based nanocomposites: synthesis, characterization, and photocatalytic response towards wastewater treatment. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2021; 28:17697-17711. [PMID: 33403627 DOI: 10.1007/s11356-020-11778-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2020] [Accepted: 11/19/2020] [Indexed: 06/12/2023]
Abstract
Recently, rising distress over ecological pollution owing to water contamination by coloring effluents primarily due to dyes is of growing concern. The development of semiconductor/magnetic oxide-based nanomaterials has verified to be a potent remediation means for water pollution. In the present article, the fabrication of nanocomposites was carried out by the facile hydrothermal method. The ZnO and ZnSe nanoparticles were in situ formed on the α-Fe2O3 layer, thereby forming a heterojunction. The prepared α-Fe2O3/ZnSe nanocomposite possessed a degradation of 98.9% for a Congo red aqueous solution of 100 ppm. The α-Fe2O3/ZnO nanocomposite showed only 26% degradation of 100 ppm dye solution depicting a poor photocatalytic performance. This is attributed to the formation of recombination-enhanced configuration (type-I heterostructure) in the α-Fe2O3/ZnO nanocomposite (NC). In contrast, α-Fe2O3/ZnSe NC accomplished a higher and enhanced photocatalytic response. The key rationale for elevated photocatalytic response is the establishment of a recombination-free configuration (type-II heterostructure). Thus, α-Fe2O3/ZnSe NC known as one of outstanding nanoparticle-nanocomposite photocatalysts was synthesized under mild conditions exclusive of some multifaceted post-treatment, for dye abatement process.
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Affiliation(s)
- Rooha Khurram
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China
| | - Zhan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology, Beijing, 100124, People's Republic of China.
| | - Muhammad Fahad Ehsan
- Department of Chemistry, School of Natural Sciences (SNS), National University Of Sciences And Technology (NUST), H-12, Islamabad, 44000, Pakistan.
- Department of Chemistry, Cape Breton University, 1250 Grand Lake Road, Sydney, NS, B1P 6L2, Canada.
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Wu Y, Chen C, He S, Zhao X, Huang S, Zeng G, You Y, Cao Y, Niu L. In situ preparation of visible-light-driven carbon quantum dots/NaBiO 3 hybrid materials for the photoreduction of Cr(VI). J Environ Sci (China) 2021; 99:100-109. [PMID: 33183687 DOI: 10.1016/j.jes.2020.06.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 06/10/2020] [Accepted: 06/14/2020] [Indexed: 06/11/2023]
Abstract
In this study, different carbon quantum dots (CQDs)/NaBiO3 hybrid materials were synthesized as photocatalysts to effectively utilize visible light for the photocatalytic degradation of contaminants effectively. These hybrid materials exhibit an enhanced photocatalytic reduction of hexavalent chromium (Cr(VI)) in the aqueous medium. Zero-dimensional nanoparticles of CQDs were embedded within the two-dimensional NaBiO3 nanosheets by the hydrothermal process. Compared with that of the pure NaBiO3 nanosheets, the photocatalytic performance of the hybrid catalysts was significantly high and 6 wt.% CQDs/NaBiO3 catalyst exhibited better photocatalytic performance. We performed the first-principles density functional theory calculations to study the interfacial properties of pure NaBiO3 nanosheets and hybrid photocatalysts, and confirmed the CQDs played an important role in the CQDs/NaBiO3 composites. The experimental results indicated that the enhanced reduction of Cr(VI) was probably due to the high loading of CQDs (electron acceptor) on NaBiO3, which made NaBiO3 nanomaterials to respond in visible light and significantly improved their electron-hole separation efficiency.
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Affiliation(s)
- Yixiao Wu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China; Qiannan Normal University for Nationalities, Duyun 558000, China
| | - Chunlong Chen
- Physical Sciences Division, Physical and Computational Sciences Directorate, Pacific Northwest National Laboratory, Richland, WA 99354, USA; Department of Chemical Engineering, University of Washington, Seattle, WA 98101, USA
| | - Shu He
- School of Environment, Higher Education Mega Center, Harbin Institute of Technology, Harbin 150000, China
| | - Xuesong Zhao
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Shaobin Huang
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China.
| | - Gongchang Zeng
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Yingying You
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Ying Cao
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
| | - Lishan Niu
- School of Environment and Energy, South China University of Technology, Higher Education Mega Center, Guangzhou 510006, China
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He Z, Liang R, Zhou C, Yan G, Wu L. Carbon quantum dots (CQDs)/noble metal co-decorated MIL-53(Fe) as difunctional photocatalysts for the simultaneous removal of Cr(VI) and dyes. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117725] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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Khurram R, Wang Z, Ehsan MF, Peng S, Shafiq M, Khan B. Synthesis and characterization of an α-Fe 2O 3/ZnTe heterostructure for photocatalytic degradation of Congo red, methyl orange and methylene blue. RSC Adv 2020; 10:44997-45007. [PMID: 35516253 PMCID: PMC9058815 DOI: 10.1039/d0ra06866g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2020] [Accepted: 11/16/2020] [Indexed: 12/12/2022] Open
Abstract
The leading challenge towards environmental protection is untreated textile dyes. Tailoring photocatalytic materials is one of the sustainable remediation strategies for dye treatment. Hematite (α-Fe2O3), due to its favorable visible light active band gap (i.e. 2.1 eV), has turned out to be a robust material of interest. However, impoverished photocatalytic efficiency of α-Fe2O3 is ascribable to the short life span of the charge carriers. Consequently, the former synthesized heterostructures possess low degradation efficiency. The aim of the proposed endeavor is the synthesis of a novel zinc telluride-modified hematite (α-Fe2O3/ZnTe) heterostructure, its characterization and demonstration of its enhanced photocatalytic response. The promising heterostructure as well as bare photocatalysts were synthesized via a hydrothermal approach. All photocatalysts were characterized by the X-ray diffraction technique (XRD), scanning electron microscopy (SEM), and electron diffraction spectroscopy (EDX). Moreover, the selectivity and activity of the photocatalyst are closely related to the alignment of its band energy levels, which were estimated by UV-Vis diffuse reflectance spectroscopy (DRS) and X-ray photoelectron spectroscopy (XPS). Nanomaterials, specifically α-Fe2O3 and α-Fe2O3/ZnTe, were used for the degradation of Congo red (97.9%), methyl orange (84%) and methylene blue (73%) under light irradiation (>200 nm) for 60 min. The results suggested that with the aforementioned optimized fabricated heterostructure, the degradation efficiency was improved in comparison to bare hematite (α-Fe2O3). The key rationale towards such improved photocatalytic response is the establishment of a type-II configuration in the α-Fe2O3/ZnTe heterostructure.
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Affiliation(s)
- Rooha Khurram
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology Beijing China +86-10-6739-1983 +86-10-6739-6186
- Department of Chemistry, School of Natural Sciences (SNS), NUST H-12 Islamabad Pakistan
| | - Zhan Wang
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology Beijing China +86-10-6739-1983 +86-10-6739-6186
| | - Muhammad Fahad Ehsan
- Department of Chemistry, School of Natural Sciences (SNS), NUST H-12 Islamabad Pakistan
- Department of Chemistry, Cape Breton University 1250 Grand Lake Road Sydney NS B1P 6L2 Canada
| | - Song Peng
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology Beijing China +86-10-6739-1983 +86-10-6739-6186
| | - Maryam Shafiq
- Department of Chemistry, School of Natural Sciences (SNS), NUST H-12 Islamabad Pakistan
| | - Bushra Khan
- Beijing Key Laboratory for Green Catalysis and Separation, Department of Chemistry and Chemical Engineering, Beijing University of Technology Beijing China +86-10-6739-1983 +86-10-6739-6186
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Hyaluronic acid as a material for the synthesis of fluorescent carbon dots and its application for selective detection of Fe3+ ion and folic acid. Microchem J 2020. [DOI: 10.1016/j.microc.2020.105364] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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23
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Visible light induced efficient activation of persulfate by a carbon quantum dots (CQDs) modified γ-Fe2O3 catalyst. CHINESE CHEM LETT 2020. [DOI: 10.1016/j.cclet.2020.01.032] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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24
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Alhumaimess MS, Alsohaimi IH, Alshammari HM, Aldosari OF, Hassan HMA. Synthesis of gold and palladium nanoparticles supported on CuO/rGO using imidazolium ionic liquid for CO oxidation. RESEARCH ON CHEMICAL INTERMEDIATES 2020. [DOI: 10.1007/s11164-020-04274-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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25
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Taylor M, Pullar RC, Parkin IP, Piccirillo C. Nanostructured titanium dioxide coatings prepared by Aerosol Assisted Chemical Vapour Deposition (AACVD). J Photochem Photobiol A Chem 2020. [DOI: 10.1016/j.jphotochem.2020.112727] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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26
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Kormányos A, Kecsenovity E, Honarfar A, Pullerits T, Janáky C. Hybrid FeNiOOH/α-Fe 2O 3/Graphene Photoelectrodes with Advanced Water Oxidation Performance. ADVANCED FUNCTIONAL MATERIALS 2020; 30:2002124. [PMID: 32774199 PMCID: PMC7405979 DOI: 10.1002/adfm.202002124] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Revised: 05/07/2020] [Indexed: 05/02/2023]
Abstract
In this study, the photoelectrochemical behavior of electrodeposited FeNiOOH/Fe2O3/graphene nanohybrid electrodes is investigated, which has precisely controlled structure and composition. The photoelectrode assembly is designed in a bioinspired manner where each component has its own function: Fe2O3 is responsible for the absorption of light, the graphene framework for proper charge carrier transport, while the FeNiOOH overlayer for facile water oxidation. The effect of each component on the photoelectrochemical behavior is studied by linear sweep photovoltammetry, incident photon-to-charge carrier conversion efficiency measurements, and long-term photoelectrolysis. 2.6 times higher photocurrents are obtained for the best-performing FeNiOOH/Fe2O3/graphene system compared to its pristine Fe2O3 counterpart. Transient absorption spectroscopy measurements reveal an increased hole-lifetime in the case of the Fe2O3/graphene samples. Long-term photoelectrolysis measurements in combination with Raman spectroscopy, however, prove that the underlying nanocarbon framework is corroded by the photogenerated holes. This issue is tackled by the electrodeposition of a thin FeNiOOH overlayer, which rapidly accepts the photogenerated holes from Fe2O3, thus eliminating the pathway leading to the corrosion of graphene.
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Affiliation(s)
- Attila Kormányos
- Department of Physical Chemistry and Materials ScienceUniversity of SzegedSzegedH‐6720Hungary
| | - Egon Kecsenovity
- Department of Physical Chemistry and Materials ScienceUniversity of SzegedSzegedH‐6720Hungary
| | - Alireza Honarfar
- Chemical Physics and NanoLundLund UniversityBox 124Lund22100Sweden
| | - Tönu Pullerits
- Chemical Physics and NanoLundLund UniversityBox 124Lund22100Sweden
| | - Csaba Janáky
- Department of Physical Chemistry and Materials ScienceUniversity of SzegedSzegedH‐6720Hungary
- ELI‐ALPSELI‐HU Non‐Profit Ltd.Wolfgang Sandner utca 3SzegedH‐6728Hungary
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N doped carbon quantum dots modified defect-rich g-C3N4 for enhanced photocatalytic combined pollutions degradation and hydrogen evolution. Colloids Surf A Physicochem Eng Asp 2020. [DOI: 10.1016/j.colsurfa.2020.124552] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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28
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Fu CC, Hsieh CT, Juang RS, Gu S, Ashraf Gandomi Y, Kelly RE, Kihm KD. Electrochemical sensing of mercury ions in electrolyte solutions by nitrogen-doped graphene quantum dot electrodes at ultralow concentrations. J Mol Liq 2020. [DOI: 10.1016/j.molliq.2020.112593] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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29
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Promoting the Photo-Fenton catalytic activity with carbon dots: Broadening light absorption, higher applicable pH and better reuse performance. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2018.12.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mehta A, Mishra A, Basu S, Shetti NP, Reddy KR, Saleh TA, Aminabhavi TM. Band gap tuning and surface modification of carbon dots for sustainable environmental remediation and photocatalytic hydrogen production - A review. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 250:109486. [PMID: 31518793 DOI: 10.1016/j.jenvman.2019.109486] [Citation(s) in RCA: 79] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/27/2019] [Accepted: 08/27/2019] [Indexed: 05/06/2023]
Abstract
Energy and water are the two major issues facing the modern mankind. Providing freshwater requires energy and producing energy uses water. In the present-day scenario, both these routes face growing problems and limitations. Energy crisis has risen due to the depletion of fossil fuels that cause pollution to water bodies making the water unusable for human consumption. In this regard, semiconductor nanocrystals with luminescent properties or carbon quantum dots (CQDs) are the newly developed nanomaterials whose distinctive photo-physical characteristics are focusing to a new generation of robust materials and sensors for sustainable development. In this review, advances in surface and band gap modification of CQDs to improve the activity of nanomaterials will be discussed with special reference to some specific CQDs exhibiting special optical properties for water treatment/splitting applications. Recent advances on CQDs nanocomposites including their applications in photodegradation of organic pollutants, sensing of heavy metal ions in water and water splitting are discussed critically to narrate the future prospects in this field. Challenges and limitations for further improvement are covered to provide smart choices for creating sustainability of benign environment and economic benefits.
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Affiliation(s)
- Akansha Mehta
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147004, India
| | - Amit Mishra
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147004, India
| | - Soumen Basu
- School of Chemistry and Biochemistry, Thapar Institute of Engineering and Technology, Patiala, 147004, India.
| | - Nagaraj P Shetti
- Electrochemistry and Materials Group, Department of Chemistry, K.L.E. Institute of Technology, Hubballi, 580 030, Visvesvaraya Technological University, Karnataka, India
| | - Kakarla Raghava Reddy
- School of Chemical and Biomolecular Engineering, The University of Sydney, Sydney, NSW, 2006, Australia.
| | - Tawfik A Saleh
- Chemistry Department, King Fahd University of Petroleum & Minerals, B.O. Box: 346, Dhahran, 31261, Saudi Arabia
| | - Tejraj M Aminabhavi
- Pharmaceutical Engineering, Sonia College of Pharmacy, Dharwad, 580 002, Karnataka, India.
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Wang S, Yang H, Yi Z, Wang X. Enhanced photocatalytic performance by hybridization of Bi 2WO 6 nanoparticles with honeycomb-like porous carbon skeleton. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2019; 248:109341. [PMID: 31382192 DOI: 10.1016/j.jenvman.2019.109341] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2019] [Revised: 07/18/2019] [Accepted: 07/30/2019] [Indexed: 05/25/2023]
Abstract
In this work, we have assembled Bi2WO6 nanoparticles on the surface of honeycomb-like porous carbon skeleton (PCS) via a hydrothermal route to achieve a new type of PCS@Bi2WO6 hybrid composite photocatalysts. The PCS@Bi2WO6 hybrid structures are determined by SEM, TEM and XPS characterizations. UV-vis DRS investigation suggests an enhanced visible-light absorption of the PCS@Bi2WO6 composites. Transient photocurrent response, EIS and PL spectroscopy characterizations demonstrate that the composites exhibit an efficient separation of photoproduced electron/hole pairs. The photocatalytic performance of the composites were evaluated by using RhB as the model pollutant and simulated sunlight as the light source. It is revealed that the PCS@Bi2WO6 hybrid composites manifest much enhanced photocatalytic performance. The 5 wt%PCS@Bi2WO6 composite manifests the highest photocatalytic activity, which is ca. 2.1 times as large as that of bare Bi2WO6 nanoparticles. This can be mainly ascribed to two factors: (1) The photogenerated electron/hole pairs in Bi2WO6 are efficiently separated due to the electron transfer between Bi2WO6 and PCS; and (2) PCS induces enhanced visible-light absorption and the visible-light-excited electrons in PCS could also take part in the photocatalytic reactions.
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Affiliation(s)
- Siyuan Wang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, China
| | - Hua Yang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, China.
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang, 621010, China
| | - Xiangxian Wang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou, 730050, China
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32
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Fabrication of carbon quantum dots/TiO2/Fe2O3 composites and enhancement of photocatalytic activity under visible light. Chem Phys Lett 2019. [DOI: 10.1016/j.cplett.2019.06.011] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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33
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Zhao X, Wang R, Lu Z, Wang W, Yan Y. Dual sensitization effect and conductive structure of Fe3O4@mTiO2/C photocatalyst towards superior photodegradation activity for bisphenol A under visible light. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.111902] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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34
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Zeng Y, Chen D, Chen T, Cai M, Zhang Q, Xie Z, Li R, Xiao Z, Liu G, Lv W. Study on heterogeneous photocatalytic ozonation degradation of ciprofloxacin by TiO 2/carbon dots: Kinetic, mechanism and pathway investigation. CHEMOSPHERE 2019; 227:198-206. [PMID: 30986602 DOI: 10.1016/j.chemosphere.2019.04.039] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2018] [Revised: 03/05/2019] [Accepted: 04/06/2019] [Indexed: 06/09/2023]
Abstract
In this study, the objective was mainly focusing on the mechanism investigation of ciprofloxacin (CIP) degradation by photocatalytic ozonation process which carried out by ozone and TiO2 with a low content of carbon-dots (CDs) under simulated sunlight irradiation. The physicochemical properties of the prepared photocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscope (SEM) X-ray photoelectron spectroscopy (XPS) and zeta potential. Comprehensive investigation has proven the process to be efficient in the removal of CIP with high yield of reactive species (OH, O2-, h+, etc.). Kinetic model on pH investigation found out a repulsive force between the photocatalysts and CIP intensified with the increasing pH, so did the production rate of hydroxyl radicals (OH), while eventually reached a balance and achieved a maximum degradation rate. The results indicated that the enhancement mechanism was triggered by the photoexcited electron accumulated on CDs and transferred by ozone, resulting in the continuous generation of h+, O3- and O2-. Possible photocatalytic ozonation degradation pathways of CIP were proposed according to the identifications of intermediates using high-resolution accurate-mass spectrometry (HRAM) LC-MS/MS.
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Affiliation(s)
- Yongqin Zeng
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Danni Chen
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Tiansheng Chen
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Meixuan Cai
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Qianxin Zhang
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhijie Xie
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Ruobai Li
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Zhenjun Xiao
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China
| | - Guoguang Liu
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
| | - Wenying Lv
- School of Environmental Science and Engineering, Institute of Environmental Health and Pollution Control, Guangdong University of Technology, Guangzhou, 510006, China.
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35
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Chen X, Fang G, Liu C, Dionysiou DD, Wang X, Zhu C, Wang Y, Gao J, Zhou D. Cotransformation of Carbon Dots and Contaminant under Light in Aqueous Solutions: A Mechanistic Study. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2019; 53:6235-6244. [PMID: 31081623 DOI: 10.1021/acs.est.8b07124] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
In this study, the photochemistry of carbon dots (CDs) and their effects on pollutant transformation were systematically examined. Diethyl phthalate (DEP) degradation was strongly enhanced by CDs under UV light, with the observed reaction rate constant ( kobs) increased by 2.4-15.1-fold by CDs at a concentration of 0.5-10 mg/L. Electron paramagnetic resonance (EPR) spectrometry combined with free radical quenching experiments with various chemical probes indicated the production of reactive oxygen species (ROS), including hydroxyl radicals (•OH), singlet oxygen (1O2), and superoxide radical anions (O2•-), and these contributed to the enhanced DEP degradation. Meanwhile, CDs were also degraded to low-molecular-weight species and partially mineralized to CO2 by ROS, as evidenced by Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) and total organic carbon (TOC) analysis, and transformation of CDs was accelerated by DEP. Furthermore, CDs were degraded rapidly under natural sunlight, accompanied by the formation of •OH and 1O2. Anions such as CO32-, NO3-, and Cl- had limited effects on transformation of CDs, while humic substances greatly inhibited this process. Our results indicate that photoreactions of CDs play an important role in influencing the transformation of pollutants and CDs themselves in the natural aquatic environment. The findings provide invaluable information for evaluating risks associated with the release of CDs into the natural environment.
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Affiliation(s)
- Xiru Chen
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
- University of Chinese Academy of Sciences, Beijing 100049 , P.R. China
| | - Guodong Fang
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Cun Liu
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Dionysios D Dionysiou
- Environmental Engineering and Science Program, Department of Chemical and Environmental Engineering (ChEE) , University of Cincinnati , Cincinnati , Ohio 45221-0071 , United States
| | - Xiaolei Wang
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Changyin Zhu
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Yujun Wang
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Juan Gao
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
| | - Dongmei Zhou
- Key Laboratory of Soil Environment and Pollution Remediation , Institute of Soil Science, Chinese Academy of Sciences , Nanjing 210008 , P.R. China
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36
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Luo D, Chen Q, Qiu Y, Liu B, Zhang M. Carbon Dots-Decorated Bi 2WO 6 in an Inverse Opal Film as a Photoanode for Photoelectrochemical Solar Energy Conversion under Visible-Light Irradiation. MATERIALS 2019; 12:ma12101713. [PMID: 31137804 PMCID: PMC6566223 DOI: 10.3390/ma12101713] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Revised: 05/17/2019] [Accepted: 05/22/2019] [Indexed: 11/23/2022]
Abstract
This work focuses on the crystal size dependence of photoactive materials and light absorption enhancement of the addition of carbon dots (CDs). mac-FTO (macroporous fluorine-doped tin oxide) films with an inverse opal structure are exploited to supply enhanced load sites and to induce morphology control for the embedded photoactive materials. The Bi2WO6@mac-FTO photoelectrode is prepared directly inside a mac-FTO film using a simple in situ synthesis method, and the application of CDs to the Bi2WO6@mac-FTO is achieved through an impregnation assembly for the manipulation of light absorption. The surface morphology, chemical composition, light absorption characteristics and photocurrent density of the photoelectrode are analyzed in detail by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), UV–vis diffuse reflectance spectra (DRS), Energy dispersive X-ray analysis (EDX) and linear sweep voltammetry (LSV).
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Affiliation(s)
- Dongxiang Luo
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
| | - Qizan Chen
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
| | - Ying Qiu
- Guangdong Research and Design Center for Technological Economy, Guangzhou 510000, China.
| | - Baiquan Liu
- Luminous! Center of Excellence for Semiconductor Lighting and Displays, School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798, Singapore.
| | - Menglong Zhang
- School of Materials and Energy, Guangdong University of Technology, Guangzhou 510006, China.
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37
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Zhao X, Yang H, Cui Z, Wang X, Yi Z. Growth Process and CQDs-modified Bi₄Ti₃O 12 Square Plates with Enhanced Photocatalytic Performance. MICROMACHINES 2019; 10:E66. [PMID: 30669287 PMCID: PMC6356592 DOI: 10.3390/mi10010066] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/09/2019] [Accepted: 01/16/2019] [Indexed: 11/16/2022]
Abstract
Bi₄Ti₃O12 square plates were synthesized via a hydrothermal route, and their growth process was systematically investigated. Carbon quantum dots (CQDs) were prepared using glucose as the carbon source, which were then assembled on the surface of Bi₄Ti₃O12 square plates via a hydrothermal route with the aim of enhancing the photocatalytic performance. XRD (X-ray powder diffraction), SEM (scanning electron microscopy), TEM (transmission electron microscopy), UV-vis DRS (diffuse reflectance spectroscopy), XPS (X-ray photoelectron spectroscopy), FTIR (Fourier transform infrared spectroscopy), PL (photoluminescence) spectroscopy, EIS (electrochemical impedance spectroscopy) and photocurrent spectroscopy were used to systematically characterize the as-prepared samples. It is demonstrated that the decoration of CQDs on Bi₄Ti₃O12 plates leads to an increased visible light absorption, slightly increased bandgap, increased photocurrent density, decreased charge-transfer resistance, and decreased PL intensity. Simulated sunlight and visible light were separately used as a light source to evaluate the photocatalytic activity of the samples toward the degradation of RhB in aqueous solution. Under both simulated sunlight and visible light irradiation, CQDs@Bi₄Ti₃O12 composites with an appropriate amount of CQDs exhibit obviously enhanced photocatalytic performance. However, the decoration of excessive CQDs gives rise to a decrease in the photocatalytic activity. The enhanced photocatalytic activity of CQDs-modified Bi₄Ti₃O12 can be attributed to the following reasons: (1) The electron transfer between Bi₄Ti₃O12 and CQDs promotes an efficient separation of photogenerated electron/hole pairs in Bi₄Ti₃O12; (2) the up-conversion photoluminescence emitted from CQDs could induce the generation of additional electron/hole pairs in Bi₄Ti₃O12; and (3) the photoexcited electrons in CQDs could participate in the photocatalytic reactions.
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Affiliation(s)
- Xinxin Zhao
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Hua Yang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Ziming Cui
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Xiangxian Wang
- State Key Laboratory of Advanced Processing and Recycling of Non-ferrous Metals, Lanzhou University of Technology, Lanzhou 730050, China.
| | - Zao Yi
- Joint Laboratory for Extreme Conditions Matter Properties, Southwest University of Science and Technology, Mianyang 621010, China.
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38
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Behboudi H, Mehdipour G, Safari N, Pourmadadi M, Saei A, Omidi M, Tayebi L, Rahmandoust M. Carbon Quantum Dots in Nanobiotechnology. ADVANCED STRUCTURED MATERIALS 2019. [DOI: 10.1007/978-3-030-10834-2_6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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39
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Sharma S, Mehta S, Ibhadon A, Kansal S. Fabrication of novel carbon quantum dots modified bismuth oxide (α-Bi2O3/C-dots): Material properties and catalytic applications. J Colloid Interface Sci 2019; 533:227-237. [DOI: 10.1016/j.jcis.2018.08.056] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 08/17/2018] [Accepted: 08/20/2018] [Indexed: 01/09/2023]
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40
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Li Z, Che G, Jiang W, Liu L, Wang H. Visible-light-driven CQDs@MIL-125(Ti) nanocomposite photocatalyst with enhanced photocatalytic activity for the degradation of tetracycline. RSC Adv 2019; 9:33238-33245. [PMID: 35529147 PMCID: PMC9073379 DOI: 10.1039/c9ra05600a] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2019] [Accepted: 09/26/2019] [Indexed: 11/21/2022] Open
Abstract
In the present study, a novel photocatalyst, CQDs@MIL-125(Ti) (CQDs = carbon quantum dots), was prepared via a solvothermal procedure. The photocatalytic properties were tested by the degradation of tetracycline (TC) with a 250 W Xe lamp (λ > 420 nm). Compared with pure MIL-125(Ti), the 10 wt% CQDs@MIL-125(Ti) photocatalyst can significantly improve the degradation process of TC, and the degradation efficiency can reach 90% within 4 h. The enhancement in the photocatalytic performance is due to the CQDs, which can promote the absorption of visible light and also efficiently accelerate the separation of photogenerated electron–hole pairs. We have also demonstrated that superoxide radicals (·O2−) and holes (h+) play crucial roles in the photocatalytic degradation of TC through capture experiments. The current work provides a new idea for constructing high-efficiency photocatalysts based on MIL-125(Ti). A novel CQDs@MIL-125(Ti) photocatalyst had been synthesized by a facile solvothermal process for the degradation of TC. The possible degradation mechanism was proposed based on the active species trapping experiments.![]()
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Affiliation(s)
- Zhi Li
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Guangbo Che
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Wei Jiang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Lihui Liu
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
| | - Hairui Wang
- Key Laboratory of Preparation and Application of Environmental Friendly Materials (Jilin Normal University)
- Ministry of Education
- Changchun 130103
- People's Republic of China
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41
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Sharma P, Jang J, Lee JS. Key Strategies to Advance the Photoelectrochemical Water Splitting Performance of α‐Fe2O3Photoanode. ChemCatChem 2018. [DOI: 10.1002/cctc.201801187] [Citation(s) in RCA: 78] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pankaj Sharma
- Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Ji‐Wook Jang
- Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
| | - Jae Sung Lee
- Department of Energy Engineering School of Energy and Chemical EngineeringUlsan National Institute of Science and Technology (UNIST) Ulsan 44919 Republic of Korea
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42
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Pirsaheb M, Asadi A, Sillanpää M, Farhadian N. Application of carbon quantum dots to increase the activity of conventional photocatalysts: A systematic review. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.09.064] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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43
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Qin J, Nan Q, Yang J, Yang R. Bright carbon dots via inner filter effect for the sensitive determination of the purine metabolic disorder in human fluids. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2018; 203:421-427. [PMID: 29894955 DOI: 10.1016/j.saa.2018.05.078] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2018] [Revised: 05/02/2018] [Accepted: 05/25/2018] [Indexed: 06/08/2023]
Abstract
In this paper, the high performance fluorescent carbon dots were synthesized with maleic acid, tris and benzoic acid as raw materials by one-step hydrothermal method. The obtained carbon dots with uniform size emitted strong blue fluorescence, which the maximum excitation and emission wavelengths at 250 nm and 415 nm, respectively. Under the optimum condition, it was meaningfully founded that the reaction between the carbon dots and uric acid resulting in the fluorescence quenching of the carbon dots at the emission spectrum of 415 nm. The reason was that they had a synergistic effect between the fluorescence internal filtering effect and the static quenching effect. The fluorescence internal filter effect sensing system was constructed by using uric acid as the absorbable material and carbon dots as the luminophore. Hence, a fluorescence quenching method for the determination of uric acid was established in the concentration range from 5.0 to 400 μM with the detection limit (3σ/S) of 2.26 μM. Thus, a fluorescent sensing assay for the determination of uric acid was founded and confirmed in human fluids.
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Affiliation(s)
- Ju Qin
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Qian Nan
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Jing Yang
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China
| | - Rui Yang
- Key Laboratory on Luminescence and Real-Time Analysis, Ministry of Education, School of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, China.
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44
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Wu P, Xu Y, Zhan J, Li Y, Xue H, Pang H. The Research Development of Quantum Dots in Electrochemical Energy Storage. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2018; 14:e1801479. [PMID: 30141575 DOI: 10.1002/smll.201801479] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2018] [Revised: 07/20/2018] [Indexed: 05/26/2023]
Abstract
Quantum dots, which are made from semiconductor materials, possess tunable physical dimensions and outstanding optoelectronic characteristics, and they have aroused widespread interest in recent years. In addition to applications in biomolecular analysis, sensors, organic photovoltaic devices, fluorescence, solar cells, photochemical reagents, light-emitting diodes, and catalysis, quantum dots have attracted mounting attention in the field of electrochemical energy storage owing to their size confinement and anisotropic geometry. In this review, a comprehensive summary is given and the research progress of the study of quantum dots for batteries and electrochemical capacitors in recent years, including their synthesis methods, micro/nanostructural features, and electrochemical performance, is appraised.
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Affiliation(s)
- Ping Wu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
| | - Yuxia Xu
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
| | - Jingyi Zhan
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
| | - Yan Li
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
| | - Huaiguo Xue
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
| | - Huan Pang
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225009, Jiangsu, P. R. China
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45
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Simultaneous biosensing of CA125 and CA15-3 tumor markers and imaging of OVCAR-3 and MCF-7 cells lines via bi-color FRET phenomenon using dual blue-green luminescent carbon dots with single excitation wavelength. Int J Biol Macromol 2018; 118:617-628. [DOI: 10.1016/j.ijbiomac.2018.06.116] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Revised: 06/22/2018] [Accepted: 06/23/2018] [Indexed: 01/11/2023]
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46
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Carbon nanodots as efficient photosensitizers to enhance visible-light driven photocatalytic activity. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.05.041] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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47
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Tong H, Zhan X, Tian X, Li J, Qian D, Wu D. Understanding the energy level matching relationships between semiconductor photocatalysts and organic pollutants for effective photocatalytic degradations. J Colloid Interface Sci 2018; 526:384-391. [DOI: 10.1016/j.jcis.2018.05.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Revised: 04/28/2018] [Accepted: 05/05/2018] [Indexed: 10/17/2022]
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48
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Yoo SH, Lee SI, Joh HI, Lee S. Highly effective photocatalysts based on carbon nanofibers decorated with TiO2 and CdSe under visible light. J IND ENG CHEM 2018. [DOI: 10.1016/j.jiec.2018.01.034] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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49
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Hu Q, Ji M, Di J, Wang B, Xia J, Zhao Y, Li H. Ionic liquid-induced double regulation of carbon quantum dots modified bismuth oxychloride/bismuth oxybromide nanosheets with enhanced visible-light photocatalytic activity. J Colloid Interface Sci 2018; 519:263-272. [DOI: 10.1016/j.jcis.2018.02.057] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2017] [Revised: 02/15/2018] [Accepted: 02/17/2018] [Indexed: 10/18/2022]
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50
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