1
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K H. A review on carbon quantum dot/semiconductor-based nanocomposites as hydrogen production photocatalysts. RSC Adv 2024; 14:23404-23422. [PMID: 39055266 PMCID: PMC11270004 DOI: 10.1039/d4ra04149f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2024] [Accepted: 07/10/2024] [Indexed: 07/27/2024] Open
Abstract
Carbon quantum dots (CQDs) are discrete, quasi-spherical carbon nanoparticles with sizes below 10 nm. The properties of CQDs can be further enhanced by doping with elements such as nitrogen, phosphorous, sulphur, and boron or co-doping with heteroatoms such as nitrogen-phosphorous, nitrogen-sulphur, and nitrogen-boron. These excellent properties of CQDs can be utilized to enhance the photocatalytic performance of semiconductors. Therefore, in this review, we summarize different types of bare CQD-scaffolded semiconductors, both doped and co-doped, used for photocatalytic hydrogen production. Moreover, the detailed photocatalytic mechanism of CQD/semiconductor-based hydrogen production is reviewed. Recent progress in the design and development of CQD-based photocatalysts, along with the challenges involved, is comprehensively reviewed.
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Affiliation(s)
- Hareesh K
- Department of Physics, Manipal Institute of Technology Bengaluru, Manipal Academy of Higher Education Manipal 576104 India
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2
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Guo J, Fan Y, Dong X, Zeng H, Ma X, Fu Y. Study on preparation of UV-CDs/Zeolite-4A/TiO 2 composite photocatalyst coupled with ultraviolet-irradiation and their application of photocatalytic degradation of dyes. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 354:120342. [PMID: 38382431 DOI: 10.1016/j.jenvman.2024.120342] [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: 10/11/2023] [Revised: 01/11/2024] [Accepted: 02/08/2024] [Indexed: 02/23/2024]
Abstract
In this work, ultraviolet irradiation was employed to assist in the preparation of a novel photocatalyst composite in the form of carbon dots/zeolite-4A/TiO2, using coal tailings as the source of silicon-aluminum and carbon. The composite was designed for the degradation of methylene blue under 500 W of UV light irradiation. Zeolite-4A was used as a support for the well-dispersed carbon dots and TiO2 nanoparticles. The as-prepared composites were subjected to thorough characterization, confirming the successful formation of zeolite-4A with a cube structure, along with the loading of TiO2 and coal-based CDs in the composites. The experimental results demonstrated that the UV-CZTs nanocomposites exhibited a remarkable removal efficiency of 90.63% within 90 min for MB. The corresponding rate constant was exceptionally high at 0.0331 min-1, surpassing that of the Dark-CZTs and pure TiO2. This significant enhancement was possibly due to the synergistic effect of adsorption photocatalysis of the UV-CZTs, combined with the excellent electron-accepting capabilities of the coal-based CDs, which led to highly improved charge separation. An investigation of the spent photocatalyst's recyclability revealed that it retained a remarkable 82.94% MB removal efficiency after five consecutive cycles, signifying the stability of the composite. Trapping experiments also elucidated the primary reactive species responsible for MB degradation, which were identified as photo-generated holes and ⸱O2- species. By this process, the hydroxyl radicals generated in the system successfully promoted the transformation of coal tailings to coal-based zeolite and coal-based CDs. Coal-based zeolite served as an excellent carrier of titanium dioxide, which improved its dispersibility. The inhibition of e--h+ recombination of titanium dioxide by introducing coal-based CDs improved the photocatalytic ability of titanium dioxide. Through this study, coal tailings, as a coal processing waste, were transformed into high-value materials, and relevant photocatalytic composite materials could be prepared with broad application prospects.
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Affiliation(s)
- Jiaqi Guo
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China; Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada
| | - Yuping Fan
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Xianshu Dong
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, AB, T6G 1H9, Canada.
| | - Xiaomin Ma
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
| | - Yuanpeng Fu
- College of Mining Engineering, Taiyuan University of Technology, Taiyuan, 030024, Shanxi, China
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3
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Majood M, Agrawal O, Garg P, Selvam A, Yadav SK, Singh S, Kalyansundaram D, Verma YK, Nayak R, Mohanty S, Mukherjee M. Carbon quantum dot-nanocomposite hydrogel as Denovo Nexus in rapid chondrogenesis. BIOMATERIALS ADVANCES 2024; 157:213730. [PMID: 38101066 DOI: 10.1016/j.bioadv.2023.213730] [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: 09/16/2023] [Revised: 11/15/2023] [Accepted: 12/07/2023] [Indexed: 12/17/2023]
Abstract
The incapability of cartilage to naturally regenerate and repair chronic muscular injuries urges the development of competent bionic rostrums. There is a need to explore faster strategies for chondrogenic engineering using mesenchymal stem cells (MSCs). Along these lines, rapid chondrocyte differentiation would benefit the transplantation demand affecting osteoarthritis (OA) and rheumatoid arthritis (RA) patients. In this report, a de novo nanocomposite was constructed by integrating biogenic carbon quantum dot (CQD) filler into synthetic hydrogel prepared from dimethylaminoethyl methacrylate (DMAEMA) and acrylic acid (AAc). The dominant structural integrity of synthetic hydrogel along with the chondrogenic differentiation potential of garlic peel derived CQDs led to faster chondrogenesis within 14 days. By means of extensive chemical and morphological characterization techniques, we illustrate that the hydrogel nanocomposite possesses lucrative features to influence rapid chondrogenesis. These results were further corroborated by bright field imaging, Alcian blue staining and Masson trichome staining. Thus, this stratagem of chondrogenic engineering conceptualizes to be a paragon in clinical wound care for the rapid manufacturing of chondrocytes.
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Affiliation(s)
- Misba Majood
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, Noida 201313, India
| | - Omnarayan Agrawal
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, Noida 201313, India
| | - Piyush Garg
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, Noida 201313, India
| | - Abhyavartin Selvam
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, Noida 201313, India; Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida 201313, India
| | - Sunil Kumar Yadav
- Center of Biomedical Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Sonu Singh
- Center of Biomedical Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Dinesh Kalyansundaram
- Center of Biomedical Engineering, Indian Institute of Technology, New Delhi 110016, India
| | - Yogesh Kumar Verma
- Division of Stem Cell & Gene Therapy Research, Institute of Nuclear Medicine & Allied Sciences, Delhi 110054, India
| | - Ranu Nayak
- Amity Institute of Nanotechnology, Amity University Uttar Pradesh, Noida 201313, India
| | - Sujata Mohanty
- Stem Cell Facility, DBT center of Excellence, All India Institute of Medical Sciences, New Delhi 110029, India.
| | - Monalisa Mukherjee
- Amity Institute of Click Chemistry Research and Studies, Amity University Uttar Pradesh, Noida 201313, India.
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4
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Luo Q, Liu W, Zhuo Q. The Mechanism of Ozone Oxidation of Coal and the Revelation of Coal Macromolecular Structure by Oxidation Products. ACS OMEGA 2024; 9:753-770. [PMID: 38222567 PMCID: PMC10785781 DOI: 10.1021/acsomega.3c06525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2023] [Revised: 10/21/2023] [Accepted: 11/23/2023] [Indexed: 01/16/2024]
Abstract
Ozone was injected into a coal-water suspension, and an HRTEM test was carried out on the separated oxidation products. The results show that from the perspective of visualization the macromolecular network structure of coal contains a large number of graphite-like structures. However, the chemical reaction mechanism between the coal surface and O3 is not clear, and the microscopic formation mechanism of oxygen-containing functional groups in carbon quantum dots has not been explained. As a result, the reaction process between O3 and methylene on the coal surface was studied by the DFT method. We found that OH• generated by O3 in water can oxidize two adjacent carbon atoms in methylene into double bonds (C=C), and finally, aldehydes and carboxylic acids were generated. By calculation of thermodynamic parameters ΔG and ΔH, it is found that all reactions are spontaneous exothermic processes. The above chemical reaction is based on the physical adsorption of OH• with Ar-(CH2)6-Ar and O3 with Ar-CH2-CH=CH-(CH2)3-Ar. The calculated adsorption energies of the two systems are -9.41 and -12.55 kcal/mol, respectively. Then, the charge transfer and atomic orbital interaction before and after adsorption are analyzed from the perspectives of Mulliken charge, density of states, deformation density, and total charge density. The results show that the electrostatic attraction is the main driving force of adsorption. The ether bond (C-O-C) in coal is finally oxidized to an ester group (RCOOR'), the hydroxyl group (CH2-CH-OH) on the aliphatic chain is oxidized to a carbonyl group (CH2-C=O), and the benzene with two OH• forms phenol hydroxyl and one molecule of water. Finally, the coal and the corresponding coal-based carbon quantum dots were investigated by infrared spectroscopy; the difference in functional groups before and after oxidation was clarified, and the result was in good agreement with the simulation.
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Affiliation(s)
- Qing Luo
- School
of Materials and Chemical Engineering, Henan
University of Urban Construction, Daxiangshan Road, Pingdingshan 467036, Henan Province, China
- School
of Chemical and Environment Engineering, China University of Mining & Technology (Beijing), D11, Xueyuan Road, Haidian District, Beijing 100083, China
| | - Wenli Liu
- School
of Chemical and Environment Engineering, China University of Mining & Technology (Beijing), D11, Xueyuan Road, Haidian District, Beijing 100083, China
| | - Qiming Zhuo
- School
of Chemical and Environment Engineering, China University of Mining & Technology (Beijing), D11, Xueyuan Road, Haidian District, Beijing 100083, China
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5
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Ma Y, Jilili Y, Shao T, Zhen W. Weathered coal-based carbon dots modified by organic amine for enhanced crystallinity and toughness of poly(lactic acid) film. Int J Biol Macromol 2024; 254:127676. [PMID: 38287582 DOI: 10.1016/j.ijbiomac.2023.127676] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 10/23/2023] [Accepted: 10/24/2023] [Indexed: 01/31/2024]
Abstract
Poly(lactic acid) (PLA) has its own limitations in terms of slow crystallization rate and low crystallinity during processing, resulting in poor toughness and thermal stability, which seriously restricts the practical application of PLA. Blending nanoparticles into the PLA matrix is an effective way to improve PLA crystallization. In this study, carbon dots (CDs) were prepared by green oxidation using weathered coal as carbon source and then surface-modified with dodecylamine (DDA) and octadecylamine (ODA). Modified CDs (MCDs)/PLA composite films were prepared using MCDs as filler to improve the crystallinity and toughness of PLA films. The results showed that the improvement effect of ODA-modified CDs (ODACDs) was better than that of DDA-modified CDs (DDACDs). The crystallinity of PLA composite film (0.05 wt% ODACDs) was increased from 7.20% (pure PLA film) to 35.44%, and its elongation at break was increased by 5.01 times compared with that of the pure PLA film. Moreover, thermogravimetric analysis suggested that the thermal stability of MCDs/PLA films was also improved. The results of simultaneous rheology and in-situ FTIR analysis as well as molecular dynamics simulations confirmed that MCDs had a strong interaction with PLA molecules, which promoted the crystallization of PLA film, thereby improving its toughness and thermal stability.
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Affiliation(s)
- Yumiao Ma
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, China; College of Chemical and Environmental Engineering, Xinjiang Institute of Engineering, Urumqi 830023, Xinjiang, China
| | - Yikelamu Jilili
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, China
| | - Tengfei Shao
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, China
| | - Weijun Zhen
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, Key Laboratory of Oil and Gas Fine Chemicals, Ministry of Education and Xinjiang Uygur Autonomous Region, School of Chemical Engineering and Technology, Xinjiang University, Urumqi 830017, Xinjiang, China.
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6
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Zhang Y, Jia J, Sun Y, Xu B, Jiang Z, Qu X, Zhang C. An Effective Strategy to Synthesize Well-Designed Activated Carbon Derived from Coal-Based Carbon Dots via Oxidation before Activation with a Low KOH Content as Supercapacitor Electrodes. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:2909. [PMID: 37999263 PMCID: PMC10674906 DOI: 10.3390/nano13222909] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/25/2023]
Abstract
The development of coal-based activated carbon for supercapacitors provides a robust and effective approach toward the clean and efficient use of coal, and it also offers high-quality and low-cost raw materials for energy storage devices. However, the one-step activation method for preparing coal-based activated carbon has problems, such as difficulty in introducing surface-functional groups and high KOH dosage. In our work, activated carbon was prepared through an effective strategy of oxidation and KOH activation with a low KOH content by employing coal-based carbon dots as raw material. The influence of temperature during the KOH activation of carbon dots on a specific surface area, pore structure, and various quantities and types of surface-functional groups, as well as on the electrochemical performance of supercapacitors, was systematically studied. The as-prepared sample, with the alkali-carbon ratio of 0.75, processes a large specific surface area (1207 m2 g-1) and abundant surface-functional groups, which may provide enormous active sites and high wettability, thus bringing in high specific capacitance and boosted electrochemical performances. The oxygen and nitrogen content of the activated carbon decreases while the carbon content increases, and the activation temperature also increases. The as-prepared activated carbon reaches the highest specific capacitance of 202.2 F g-1 in a 6 M KOH electrolyte at a current density of 10 A g-1. This study provides new insight into the design of high-performance activated carbon and new avenues for the application of coal-based carbon dots.
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Affiliation(s)
| | | | | | | | | | - Xiaoxiao Qu
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China; (Y.Z.); (J.J.); (Y.S.); (B.X.); (Z.J.)
| | - Chuanxiang Zhang
- College of Chemistry and Chemical Engineering, Henan Polytechnic University, Jiaozuo 454003, China; (Y.Z.); (J.J.); (Y.S.); (B.X.); (Z.J.)
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7
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Guo N, Liu A, Luo W, Ma R, Yan L, Ai L, Xu M, Wang L, Jia D. Hybrid nanoarchitectonics of coal-derived carbon with oxidation-induced morphology-selectivity for high-performance supercapacitor. J Colloid Interface Sci 2023; 639:171-179. [PMID: 36805742 DOI: 10.1016/j.jcis.2023.02.067] [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: 01/10/2023] [Revised: 02/08/2023] [Accepted: 02/12/2023] [Indexed: 02/16/2023]
Abstract
Coal-derived porous carbon with a large specific surface area is a common electrode material for supercapacitors. Its deep and branched micropores, dense bulk morphology and amorphous structure have greatly limited its practical applications. Herein, hybrid carbon materials were obtained from coal through oxidation followed by activation. The method allows tuning the morphology, porosity, structure, and the degree of graphitization. The pre-oxidation with KMnO4 can break raw coal into small hydrocarbon fragments, which deposit and grow on the surface of generated MnO during pyrolysis leading to hybrid carbon with mesoporous and graphitic nanostructures. Meanwhile, homogeneous etching of the carbon skeleton by the reaction intermediate of K2CO3 led to the formation of abundant active sites. Hence, the optimized sample exhibited a high capacitance of 333 F g-1 at 1 A g-1, an excellent rate capability with 58% capacitance retention at 100 A g-1 and superior cycle durability in a three-electrode system. Besides, an assembled symmetric two-electrode device displayed a high energy density of 8.9 Wh·kg-1 at 250 W·kg-1. This work proposed a facile and rational synthesis strategy by balancing the tradeoff between active sites and intrinsic conductivity and thus provided a new avenue for the value-added utilization of coal.
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Affiliation(s)
- Nannan Guo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Anjie Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Wanxia Luo
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Rui Ma
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Lihua Yan
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Lili Ai
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Mengjiao Xu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Luxiang Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China
| | - Dianzeng Jia
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources Institute of Applied Chemistry, College of Chemistry, Xinjiang University, Urumqi 830046, Xinjiang, PR China.
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8
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Xu Q, Xiao F, Xu H. Fluorescent detection of emerging virus based on nanoparticles: From synthesis to application. Trends Analyt Chem 2023; 161:116999. [PMID: 36852170 PMCID: PMC9946731 DOI: 10.1016/j.trac.2023.116999] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 01/26/2023] [Accepted: 02/21/2023] [Indexed: 02/24/2023]
Abstract
The spread of COVID-19 has caused huge economic losses and irreversible social impact. Therefore, to successfully prevent the spread of the virus and solve public health problems, it is urgent to develop detection methods with high sensitivity and accuracy. However, existing detection methods are time-consuming, rely on instruments, and require skilled operators, making rapid detection challenging to implement. Biosensors based on fluorescent nanoparticles have attracted interest in the field of detection because of their advantages, such as high sensitivity, low detection limit, and simple result readout. In this review, we systematically describe the synthesis, intrinsic advantages, and applications of organic dye-doped fluorescent nanoparticles, metal nanoclusters, up-conversion particles, quantum dots, carbon dots, and others for virus detection. Furthermore, future research initiatives are highlighted, including green production of fluorescent nanoparticles with high quantum yield, speedy signal reading by integrating with intelligent information, and error reduction by coupling with numerous fluorescent nanoparticles.
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Affiliation(s)
- Qian Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Fangbin Xiao
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
| | - Hengyi Xu
- State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, 330047, PR China
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9
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Wang C, Xu BB, Zhang X, Sun W, Chen J, Pan H, Yan M, Jiang Y. Ion Hopping: Design Principles for Strategies to Improve Ionic Conductivity for Inorganic Solid Electrolytes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2107064. [PMID: 35373539 DOI: 10.1002/smll.202107064] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Revised: 03/02/2022] [Indexed: 06/14/2023]
Abstract
Solid electrolytes are considered as an ideal substitution of liquid electrolytes, avoiding the potential hazards of volatilization, flammability, and explosion for liquid electrolyte-based rechargeable batteries. However, there are significant performance gaps to be bridged between solid electrolytes and liquid electrolytes; one with a particular importance is the ionic conductivity which is highly dependent on the material types and structures. In this review, the general physical image of ion hopping in the crystalline structure is revisited, by highlighting two main kernels that impact ion migration: ion hopping pathways and skeletons interaction. The universal strategies to effectively improve ionic conductivity of inorganic solid electrolytes are then systematically summarized: constructing rapid diffusion pathways for mobile ions; and reducing resistance of the surrounding potential field. The scoped strategies offer an exclusive view on the working principle of ion movement regardless of the ion species, thus providing a comprehensive guidance for the future exploitation of solid electrolytes.
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Affiliation(s)
- Caiyun Wang
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
| | - Ben Bin Xu
- Mechanical and Construction Engineering, Faculty of Engineering and Environment, Northumbria University, Newcastle upon Tyne, NE1 8ST, UK
| | - Xuan Zhang
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
| | - Wenping Sun
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
| | - Jian Chen
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Hongge Pan
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
- Institute of Science and Technology for New Energy, Xi'an Technological University, Xi'an, 710021, P. R. China
| | - Mi Yan
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
| | - Yinzhu Jiang
- School of Materials Science and Engineering, ZJU-Hangzhou Global Scientific and Technological Innovation Centre, Zhejiang University, Hangzhou, 310027, China
- State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou, 014030, P. R. China
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10
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Facile preparation of aqueous-soluble fluorescent polyethylene glycol functionalized carbon dots from palm waste by one-pot hydrothermal carbonization for colon cancer nanotheranostics. Sci Rep 2022; 12:10550. [PMID: 35732805 PMCID: PMC9217983 DOI: 10.1038/s41598-022-14704-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2021] [Accepted: 06/10/2022] [Indexed: 11/29/2022] Open
Abstract
Carbon dots (CDs) are categorized as an emerging class of zero-dimension nanomaterials having high biocompatibility, photoluminescence, tunable surface, and hydrophilic property. CDs, therefore, are currently of interest for bio-imaging and nano-medicine applications. In this work, polyethylene glycol functionalized CDs (CD-PEG) were prepared from oil palm empty fruit bunch by a one-pot hydrothermal technique. PEG was chosen as a passivating agent for the enhancement of functionality and photoluminescence properties of CDs. To prepare the CDs-PEG, the effects of temperature, time, and concentration of PEG were investigated on the properties of CDs. The as-prepared CDs-PEG were characterized by several techniques including dynamic light scattering, high-resolution transmission electron microscopy, X-ray photoelectron spectroscopy, fluorescence spectroscopy, Raman spectroscopy, Fourier-transform infrared spectroscopy and Thermogravimetric analysis. The as-prepared CDs under hydrothermal condition at 220 °C for 6 h had spherical morphology with an average diameter of 4.47 nm. Upon modification, CDs-PEG were photo-responsive with excellent photoluminescence property. The CDs-PEG was subsequently used as a drug carrier for doxorubicin [DOX] delivery to CaCo-2, colon cancer cells in vitro. DOX was successfully loaded onto CDs-PEG surface confirmed by FT-IR and Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometer (MALDI-TOF/MS) patterns. The selective treatment of CDs-PEG-DOX against the colorectal cancer cells, , relative to normal human fibroblast cells was succesfully demonstrated.
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11
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Wang C, Xu J, Zhang R, Zhao W. Facile and low-energy-consumption synthesis of dual-functional carbon dots from Cornus walteri leaves for detection of p-nitrophenol and photocatalytic degradation of dyes. Colloids Surf A Physicochem Eng Asp 2022. [DOI: 10.1016/j.colsurfa.2022.128351] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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12
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Hou Q, Xing B, Guo H, Kang W, Yi G, Song C, Zhang C, Zhang Y. Application of coal-based carbon dots for photocatalysis and energy storage: a minireview. NEW J CHEM 2022. [DOI: 10.1039/d2nj03041a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Refined deep processing and utilization of high-value-added coal and transforming it into an enviro-friendly product is a pressing requirement to break the bottleneck of coal development. Carbon dots (CDs) are...
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13
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Li H, Wu X, Li X, Cao X, Li Y, Cao H, Men Y. Multistage Extraction of Star Anise and Black Pepper Derivatives for Antibacterial, Antioxidant, and Anticancer Activity. Front Chem 2021; 9:660138. [PMID: 34055736 PMCID: PMC8160366 DOI: 10.3389/fchem.2021.660138] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2021] [Accepted: 04/06/2021] [Indexed: 12/15/2022] Open
Abstract
Recently, natural resources have attracted considerable interest for their applications in food security and human health problems. Traditional natural spices, such as star anise and black pepper, played important roles in the pharmaceutical and food industries due to their strong pharmacological activity, antioxidant potential and rare complications. In order to achieve biomasses from the natural product with multiple bioactivities, we developed the multistage extraction method to extract and separate various bioactive compounds from these natural plants. Our work demonstrated that various bioactive-rich extractives were achieved using steam distilled- or oxidative-extraction methods with high extraction yields and purity. Furthermore, the extractives in each step can be used not only as bioactive compounds, but also as a resource to further prepare different derivatives during the next extractive step, providing biomass-saving to a great extent. The extractives obtained with high yields and purities (>82%) were identified by 1H NMR, 13C NMR, FTIR, UV-vis, fluorescence spectroscopy, and high-performance liquid chromatography (HPLC). Moreover, these biomasses display potent antibacterial activities against some types of microorganisms such as S.aureus, S.pyogenes, E.coli, and S.typhi with a lowest MIC of 400 μg/ml for the development of antibacterial agents, significant antioxidant activity as the natural antioxidant for enhancing food shelf-life, and excellent anticancer activity that induces significant cancer cell apoptosis. This work showed the different multistage extracts from natural products, which enable them to be applied in the fields of the pharmaceutical industry and the food industry.
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Affiliation(s)
- Helin Li
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang A & F University, Hangzhou, China.,Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Xiaoyu Wu
- Department of Surgical Oncology, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xin Li
- Institute of Technical and Macromolecular Chemistry, RWTH Aachen University, Aachen, Germany
| | - Xiaobing Cao
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Yanjun Li
- Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing, China
| | - Huaru Cao
- Zhejiang Provincial Key Laboratory of Chemical Utilization of Forestry Biomass, Zhejiang A & F University, Hangzhou, China
| | - Yongzhi Men
- Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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14
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Carbon dots – Separative techniques: Tools-objective towards green analytical nanometrology focused on bioanalysis. Microchem J 2021. [DOI: 10.1016/j.microc.2020.105773] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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15
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Lou Y, Hao X, Liao L, Zhang K, Chen S, Li Z, Ou J, Qin A, Li Z. Recent advances of biomass carbon dots on syntheses, characterization, luminescence mechanism, and sensing applications. NANO SELECT 2021. [DOI: 10.1002/nano.202000232] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Affiliation(s)
- Ying Lou
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Xinyu Hao
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Lei Liao
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Kaiyou Zhang
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Shuoping Chen
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Ziyuan Li
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Jun Ou
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Aimiao Qin
- Key Lab New Processing Technology for Nonferrous Metals & Materials Ministry of Education College of Materials science and engineering College of Environmental Science and Engineering Guilin University of Technology Guilin China
| | - Zhou Li
- Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing China
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16
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Ghosh S, Chen Y, George A, Dutta M, Stroscio MA. Fluorescence Resonant Energy Transfer-Based Quantum Dot Sensor for the Detection of Calcium Ions. Front Chem 2020; 8:594. [PMID: 32903607 PMCID: PMC7438717 DOI: 10.3389/fchem.2020.00594] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 06/08/2020] [Indexed: 12/14/2022] Open
Abstract
A simple optical aptasensor has been synthesized for the detection of calcium ions. This sensing approach employs a semiconductor quantum dot (QD)–gold nanoparticle as the donor–quencher pair and operates on the principle of fluorescence resonant energy transfer (FRET). On binding with calcium ions, the DNA aptamer undergoes a conformational change, which changes the distance between the quantum dot and the gold nanoparticle, conjugated on the 5′ terminal and 3′ terminal of the aptamer, respectively. This phenomenon results in the quenching of the quantum dot emission. In this sensor, a maximum quenching of 22.42 ± 0.71% has been achieved at 35 nM calcium ion concentration while the limit of detection has been determined to be 3.77 pM. The sensor has been found to have high specificity for calcium ions in comparison to other metal ions like sodium, magnesium, and potassium. The molecular apta-beacons also demonstrated successful endocytosis and FRET-based calcium ion detection in osteocyte cells when conjugated with a cell-penetrating peptide (DSS).
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Affiliation(s)
- Shreya Ghosh
- Micro and Nanotechnology Laboratory, University of Illinois at Urbana-Champaign, Urbana, IL, United States
| | - Yinghua Chen
- Department of Oral Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Anne George
- Department of Oral Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Mitra Dutta
- Department of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, IL, United States.,Department of Physics, University of Illinois at Chicago, Chicago, IL, United States
| | - Michael A Stroscio
- Department of Electrical and Computer Engineering, University of Illinois at Chicago, Chicago, IL, United States.,Department of Physics, University of Illinois at Chicago, Chicago, IL, United States.,Department of Bioengineering, University of Illinois at Chicago, Chicago, IL, United States
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