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Soni H, Bhattu M, Sd P, Kaur M, Verma M, Singh J. Recent advances in waste-derived carbon dots and their nanocomposites for environmental remediation and biological applications. ENVIRONMENTAL RESEARCH 2024; 251:118560. [PMID: 38447603 DOI: 10.1016/j.envres.2024.118560] [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: 10/28/2023] [Revised: 02/22/2024] [Accepted: 02/24/2024] [Indexed: 03/08/2024]
Abstract
The surging demand for eco-friendly nanomaterial synthesis has spurred the emergence of green approaches for synthesizing carbon dots (CDs). These methods utilized natural carbon sources, such as different kind of waste for CDs synthesis, underscoring their significance in waste management and circular economy initiatives. Furthermore, the properties of CDs can be tailored by their functionalization with different materials, enabling their versatile utilization in diverse scientific domains. In this regard, the current study delves into an in-depth review of recent advances in the green/sustainable fabrication of carbon dots nanocomposites (CDNCs) with metal/metal oxides and polymers within the timeframe of 2019-2023. It begins by categorizing different types of CDs, analyzing their associated nanocomposites with mechanistic insights. The primary focus is on green synthesis methods, particularly those that employ waste materials. Furthermore, we also discussed the applications of these CDs in both environmental and biological fields by covering areas such as catalysis, photocatalysis, heavy metal ion sensing, antimicrobial, and bioimaging with in-depth underlying mechanisms. At last, the review highlights the significant challenges with future directions. These include the pursuit of cost-effective green precursors, the advancement of streamlined one-step synthesis techniques, and their efficient utilization for diverse applications. Therefore, this review provides valuable insights for researchers seeking to enhance the functionality and sustainability of CDNCs by highlighting their potential to address environmental and biological challenges.
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Affiliation(s)
- Himanshi Soni
- Department of Chemistry, Chandigarh University, Mohali-140413, Punjab, India
| | - Monika Bhattu
- Department of Chemistry, Chandigarh University, Mohali-140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Mohali-140413, Punjab, India
| | - Priya Sd
- Instituto de Alta Investigación, Universidad de Tarapacá, Arica-1000000, Chile
| | - Manvinder Kaur
- Department of Chemistry, Chandigarh University, Mohali-140413, Punjab, India
| | - Meenakshi Verma
- Department of Chemistry, Chandigarh University, Mohali-140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Mohali-140413, Punjab, India.
| | - Jagpreet Singh
- Department of Chemistry, Chandigarh University, Mohali-140413, Punjab, India; University Centre for Research and Development, Chandigarh University, Mohali-140413, Punjab, India.
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2
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Chen Y, Hong C, Xu Q, Zheng H, Wang C, Lu H, Zhang S, Du M, Zeng G. Visible Light Enhancement of Biocarbon Quantum-Dot-Decorated TiO 2 for Naphthalene Removal. Molecules 2024; 29:2708. [PMID: 38893581 PMCID: PMC11173786 DOI: 10.3390/molecules29112708] [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: 04/10/2024] [Revised: 05/25/2024] [Accepted: 05/28/2024] [Indexed: 06/21/2024] Open
Abstract
In this study, carbon-quantum-dot (CQD)-decorated TiO2 was prepared using an ultrasonic doping method and applied in the photocatalytic degradation of naphthalene under sunlight irradiation. The CQDs were synthesized from a typical macroalgae via diluted sulfuric acid pretreatment and hydrothermal synthesis using an optimal design, i.e., 3 wt% and 200 °C, respectively. The CQD/TiO2 composite remarkably enhanced the photocatalytic activity. The degradation of naphthalene under a visible light environment indicated that there is a synergistic mechanism between the CQDs and TiO2, in which the generation of reactive oxygen species is significantly triggered; in addition, the N that originated from the macroalgae accelerated the photocatalytic efficiency. Kinetic analysis showed that the photocatalytic behavior of the CQD/TiO2 composite followed a pseudo-first-order equation. Consequently, our combined experimental approach not only provides a facile pretreatment process for bio-CQDs synthesis, but also delivers a suitable TiO2 photocatalyst for the visible environment along with critical insights into the development of harmful macroalgae resources.
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Affiliation(s)
- Yunteng Chen
- Shaoxing Communications Investment Group Co., Ltd., Shaoxing 312099, China
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
| | - Chunxian Hong
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Qiang Xu
- China Construction Third Engineering Shanghai Co., Ltd., Shanghai 200082, China
| | - Haihong Zheng
- Hangzhou Construction Quality and Safety Supervision Station, Hangzhou 310012, China
| | - Chao Wang
- China Construction Third Engineering Shanghai Co., Ltd., Shanghai 200082, China
| | - Hongshun Lu
- China Construction Third Engineering Shanghai Co., Ltd., Shanghai 200082, China
| | - Shuai Zhang
- China Construction Third Engineering Shanghai Co., Ltd., Shanghai 200082, China
| | - Mingming Du
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China
| | - Ganning Zeng
- College of Environment, Zhejiang University of Technology, Hangzhou 310014, China
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3
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Wu R, Liu W, Bai R, Zheng D, Tian X, Lin W, Ke Q, Li L. Waste Biomass-Mediated Synthesis of TiO 2/P, K-Containing Grapefruit Peel Biochar Composites with Enhanced Photocatalytic Activity. Molecules 2024; 29:2090. [PMID: 38731581 PMCID: PMC11085262 DOI: 10.3390/molecules29092090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 04/08/2024] [Accepted: 04/24/2024] [Indexed: 05/13/2024] Open
Abstract
In this study, TiO2/P, K-containing grapefruit peel biochar (TiO2/P, K-PC) composites were synthesized in situ biomimetically using grapefruit peel as the bio-template and carbon source and tetrabutyl titanate as the titanium source. This was achieved using the two-step rotary impregnation-calcination method. Adjusting the calcination temperature of the sample in an air atmosphere could regulate the mass ratio of TiO2 to carbon. The prepared samples were subjected to an analysis of their compositions, structures, morphologies, and properties. It demonstrated that the prepared samples were complexes of anatase TiO2 and P, K-containing carbon, with the presence of graphitic carbon. They possessed a unique morphological structure with abundant pores and a large surface area. The grapefruit peel powder played a crucial role in the induction and assembly of TiO2/P, K-PC composites. The sample PCT-400-550 had the best photocatalytic activity, with the degradation rate of RhB, MO, and MB dye solutions reaching more than 99% within 30 min, with satisfactory cyclic stability. The outstanding photocatalytic activity can be credited to its unique morphology and the efficient collaboration between TiO2 and P, K-containing biochar.
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Affiliation(s)
- Ruixiang Wu
- Guangdong Provincial Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou 515063, China;
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Wenhua Liu
- Guangdong Provincial Laboratory of Marine Biotechnology, Institute of Marine Sciences, Shantou University, Shantou 515063, China;
| | - Renao Bai
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Delun Zheng
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Xiufang Tian
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Weikai Lin
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Qianwei Ke
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
| | - Lejian Li
- College of Construction and Ecology, Shantou Polytechnic, Shantou 515078, China; (R.B.); (X.T.); (W.L.); (Q.K.); (L.L.)
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Liu Y, Dai X, Li J, Cheng S, Zhang J, Ma Y. Recent progress in TiO 2-biochar-based photocatalysts for water contaminants treatment: strategies to improve photocatalytic performance. RSC Adv 2024; 14:478-491. [PMID: 38173568 PMCID: PMC10759041 DOI: 10.1039/d3ra06910a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 12/11/2023] [Indexed: 01/05/2024] Open
Abstract
Toxic organic pollutants in wastewater have seriously damaged human health and ecosystems. Photocatalytic degradation is a potential and efficient tactic for wastewater treatment. Among the entire carbon family, biochar has been developed for the adsorption of pollutants due to its large specific surface area, porous skeleton structure, and abundant surface functional groups. Hence, combining adsorption and photocatalytic decomposition, TiO2-biochar photocatalysts have received considerable attention and have been extensively studied. Owing to biochar's adsorption, more active sites and strong interactions between contaminants and photocatalysts can be achieved. The synergistic effect of biochar and TiO2 nanomaterials substantially improves the photocatalytic capacity for pollutant degradation. TiO2-biochar composites have numerous attractive properties and advantages, culminating in infinite applications. This review discusses the characteristics and preparation techniques of biochar, presents in situ and ex situ synthesis approaches of TiO2-biochar nanocomposites, explains the benefits of TiO2-biochar-based compounds for photocatalytic degradation, and emphasizes the strategies for enhancing the photocatalytic efficiency of TiO2-biochar-based photocatalysts. Finally, the main difficulties and future advancements of TiO2-biochar-based photocatalysis are highlighted. The review gives an exhaustive overview of recent progress in TiO2-biochar-based photocatalysts for organic contaminants removal and is expected to encourage the development of robust TiO2-biochar-based photocatalysts for sewage remediation and other environmentally friendly uses.
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Affiliation(s)
- Yunfang Liu
- School of Sciences, Beihua University Jilin 132013 China
| | - Xiaowei Dai
- Department of Reproductive Medicine Center, The Second Norman Bethune Hospital of Jilin University Changchun 130041 China
| | - Jia Li
- School of Sciences, Beihua University Jilin 132013 China
| | - Shaoheng Cheng
- State Key Laboratory of Superhard Materials, College of Physics, Jilin University Changchun 130012 China
| | - Jian Zhang
- School of Sciences, Beihua University Jilin 132013 China
| | - Yibo Ma
- School of Sciences, Beihua University Jilin 132013 China
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Wang C, Yang L, Chu K, Xu J, Wang D, Zhao W. Fluorescent carbon dots synthesized by waste wind turbine blade for photocatalytic degradation. LUMINESCENCE 2024; 39:e4608. [PMID: 37918949 DOI: 10.1002/bio.4608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 09/25/2023] [Accepted: 10/05/2023] [Indexed: 11/04/2023]
Abstract
Developing novel waste recycling strategies has become a feasible solution to overcome environmental pollution. In this work, a method of using waste wind turbine blade (WTB) as a carbon source to synthesize blue fluorescent carbon dots (B-CDs) by hydrothermal treatment is proposed. B-CDs are spherical and have an average particle size of 5.2 nm. The surface is rich in C-O, C=O, -CH3 , and N-H bond functional groups, containing five elements: C, O, N, Si, and Ca. The optimal emission wavelength of B-CDs is 463 nm, corresponding to an excitation wavelength of 380 nm. Notably, a relatively high quantum yield of 29.9% and a utilization rate of 40% were obtained. In addition, B-CDs can serve as a photocatalyst to degrade methylene blue dye, with a degradation efficiency of 64% under 40-min irradiation conditions. The presence of holes has a significant influence on the degradation process.
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Affiliation(s)
- Congling Wang
- School of Materials Science and Engineering, Hunan University, Changsha, China
| | - Lilin Yang
- School of Materials Science and Engineering, University of Jinan, Jinan, China
| | - Kunyu Chu
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China
| | - Jun Xu
- Shandong Provincial Key Laboratory of Preparation and Measurement of Building Materials, University of Jinan, Jinan, China
| | - Dongzhi Wang
- School of Materials Science and Engineering, University of Jinan, Jinan, China
| | - Weilin Zhao
- School of Materials Science and Engineering, University of Jinan, Jinan, China
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6
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Abbaspour F, Sarvi MN, Azimi E. Synthesis of TiO 2 nanotubes from ilmenite with CuS nanoparticles as efficient visible-light photocatalyst. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:96400-96411. [PMID: 37572255 DOI: 10.1007/s11356-023-29080-w] [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: 05/01/2023] [Accepted: 07/27/2023] [Indexed: 08/14/2023]
Abstract
Titanium dioxide nanotube (TNT) is one of the most widely used photocatalysts. In this research, TNT was prepared by a facile method using ilmenite (FeTiO3) concentrate as the titanium source. For this purpose, iron was leached out from ilmenite using HCl in assistance with the iron powder as the reducing agent to produce pure TiO2, where consequently, TNT was produced through hydrothermal treatment of the prepared TiO2 in an alkaline solution. CuS quantum dots, using the L-cysteine as a linker, were coated on the TNT to improve TNTs' photocatalytic properties. Characterization was done using XRD, SEM, FESEM, HRTEM, FT-IR, nitrogen sorption, and band gap measurement. The results revealed the formation of TNT with a star-shaped macrostructure as well as, a good dispersion of uniform CuS quantum dots with an average diameter of a few nanometers on the TiO2 structure. A dye adsorption kinetics study of the TNT and CuS-dopped TNT showed that TNT carries a higher adsorption capacity compared to the CuS-dopped TNT, developed due to its higher surface area and pore volume. Next, the photocatalytic performance (under visible light) of the prepared composite was studied over the methylene blue (MB) and malachite green (MG) dyes, after the determination of the dye adsorption equilibrium point (where the adsorption stops). TNT showed almost no dye degradation while the prepared composite degraded almost 95 % of the dyes as the result of the reduced band gap from 3.21 to 2.67 eV. In this study, for the first time, the TNT was prepared using a mineral source and ilmenite, enhanced in photocatalytic properties, and presented a successful application.
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Affiliation(s)
- Farhad Abbaspour
- Department of Mining Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
| | - Mehdi Nasiri Sarvi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran.
| | - Ebrahim Azimi
- Department of Mining Engineering, Isfahan University of Technology, Isfahan, 84156-83111, Iran
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7
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Fiszka Borzyszkowska A, Sulowska A, Czaja P, Bielicka-Giełdoń A, Zekker I, Zielińska-Jurek A. ZnO-decorated green-synthesized multi-doped carbon dots from Chlorella pyrenoidosa for sustainable photocatalytic carbamazepine degradation. RSC Adv 2023; 13:25529-25551. [PMID: 37636499 PMCID: PMC10450576 DOI: 10.1039/d3ra04188c] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Accepted: 08/19/2023] [Indexed: 08/29/2023] Open
Abstract
The promising green synthesis of carbon dots (CDs) from microalga Chlorella pyrenoidosa was achieved using simple hydrothermal and microwave-assisted methods. Doping of nanomaterials by nonmetals (N, S, and P) was confirmed by X-ray photoelectron spectroscopy (XPS), while the existence of metals in the CDs was confirmed by inductively coupled plasma optical emission spectroscopy (ICP-OES) and transmission electron microscopy (TEM), and Mg, Ca, K, and Na were found as the dominant doped metals. The novel nanomaterials with excellent photoluminescence (PL) properties were used for the modification of ZnO obtained by a simple hydrothermal process. In this regard, a series of ZnO decorated with multi-doped carbon dots (xCDs) was prepared and their photocatalytic properties were evaluated. The ZnO-xCD photocatalysts were characterized by various advanced techniques including X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy, scanning electron microscopy (SEM), XPS, Brunauer-Emmett-Teller (BET), PL, ultraviolet-visible (UV-vis) spectroscopy and electrochemical impedance spectroscopy (EIS) analysis. The photocatalytic behaviour of the obtained materials was investigated in the degradation of carbamazepine (CBZ). The influence of the synthesis method of xCDs and their content on the activity of the photocatalyst was examined. The photocatalyst ZnO modified with 3% xCDs obtained by the microwave-assisted method revealed the highest effectiveness for CBZ degradation and allowed for a first-order degradation rate of 2.85 times in comparison with non-modified ZnO. The improvement of the photocatalytic process was achieved by support with peroxymonosulphate resulting in up to 3.18 times a first order kinetic rate constant compared with that of simple photocatalysis in the presence of ZnO-xCDs. Taken together, our synthesized multi-doped CDs and their nanohybrids with ZnO, can be considered as promising candidates for photocatalytic applications.
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Affiliation(s)
- Agnieszka Fiszka Borzyszkowska
- Department of Processing Engineering and Chemical Technology, Gdansk University of Technology Gdańsk, Gabriela Narutowicza 11/12 80-233 Gdansk Poland
- EcoTech Center, Gdańsk University of Technology G. Narutowicza 11/12 80-233 Gdansk Poland
| | - Agnieszka Sulowska
- Department of Processing Engineering and Chemical Technology, Gdansk University of Technology Gdańsk, Gabriela Narutowicza 11/12 80-233 Gdansk Poland
| | - Paweł Czaja
- Institute of Metallurgy and Materials Science, Polish Academy of Sciences Reymonta 25 St Krakow Poland
| | | | - Ivar Zekker
- Institute of Chemistry, University of Tartu 14a Ravila St. 50411 Tartu Estonia
| | - Anna Zielińska-Jurek
- Department of Processing Engineering and Chemical Technology, Gdansk University of Technology Gdańsk, Gabriela Narutowicza 11/12 80-233 Gdansk Poland
- EcoTech Center, Gdańsk University of Technology G. Narutowicza 11/12 80-233 Gdansk Poland
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Sharma A, Choi HK, Lee HJ. Carbon Dots for the Treatment of Inflammatory Diseases: An Appraisal of In Vitro and In Vivo Studies. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2023; 2023:3076119. [PMID: 37273553 PMCID: PMC10234732 DOI: 10.1155/2023/3076119] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/03/2022] [Revised: 02/16/2023] [Accepted: 04/25/2023] [Indexed: 06/06/2023]
Abstract
In recent decades, several studies demonstrating various applications of carbon dots (C-dots), including metal sensing, bioimaging, pH sensing, and antimicrobial activities, have been published. Recent developments have shifted this trend toward biomedical applications that target various biomarkers relevant to chronic diseases. However, relevant developments and research results regarding the anti-inflammatory properties of C-dots against inflammation-associated diseases have not been systematically reviewed. Hence, this review discusses the anti-inflammatory effects of C-dots in in vivo and in vitro models of LPS-induced inflammation, gout, cartilage tissue engineering, drug-induced inflammation, spinal cord injury, wound healing, liver diseases, stomach cancer, gastric ulcers, acute kidney and lung injury, psoriasis, fever or hypothermia, and bone tissue regeneration. The compiled studies demonstrate the promising potential of C-dots as anti-inflammatory agents for the development of new drugs.
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Affiliation(s)
- Anshul Sharma
- College of Bionanotechnology, Department of Food and Nutrition, Gachon University, Gyeonggi-do 13120, Republic of Korea
| | - Hyo-Kyoung Choi
- Korea Food Research Institute, 245, Nongsaengmyeong-ro, Iseo-myeon, Wanju-gun, Jeollabuk-do, Republic of Korea 55365
| | - Hae-Jeung Lee
- College of Bionanotechnology, Department of Food and Nutrition, Gachon University, Gyeonggi-do 13120, Republic of Korea
- Institute for Aging and Clinical Nutrition Research, Gachon University, Gyeonggi-do 13120, Republic of Korea
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon 21999, Republic of Korea
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Ghosh T, Nandi S, Bhattacharyya SK, Ghosh SK, Mandal M, Banerji P, Das NC. Nitrogen and sulphur doped carbon dot: An excellent biocompatible candidate for in-vitro cancer cell imaging and beyond. ENVIRONMENTAL RESEARCH 2023; 217:114922. [PMID: 36435492 DOI: 10.1016/j.envres.2022.114922] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2022] [Revised: 11/17/2022] [Accepted: 11/22/2022] [Indexed: 06/16/2023]
Abstract
Carbon dots (CDs) are an exquisite class of carbon allotrope that is already well nourished for their good biocompatibility, water-solubility, excellent photostability, and magnificent photoluminescence property. Doping strategy with heteroatoms is an efficacious way to modify the physicochemical and optical properties, making the carbon dots an exceedingly potential candidate. This work reports the fabrication and cancer cell imaging application of photoluminescent heteroatom-doped carbon dots by use of cysteine and urea as carbon, nitrogen, and sulphur sources through a straightforward and highly productive hydrothermal procedure. The fabricated luminescent carbon dots are spherical in shape, with an average diameter of 3.5 nm. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FTIR) characterization revealed key facts about the surface functional groups and chemical compositions of carbon dots. The excitation-dependent photoluminescence (PL) peak appeared at around 445 nm against the excited wavelength of 350 nm. Moreover, under the provided experimental conditions, all the carbon dots are non-toxic and safe. The cytotoxicity and the safety profiles of the carbon dots were found to be in the bearable range under normal in-vitro experimental circumstances. Cellular uptake was observed by the green fluorescence of carbon dots inside cells. Likewise, the carbon dots did not alter the cell viability of the normal glial cell line. Again, when treated with the carbon dots, there was no notable increase of apoptotic cells in the G2/M phase of cell cycle analysis that confirmed the imaging-trackable ability of the carbon dots.
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Affiliation(s)
- Trisita Ghosh
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Suvendu Nandi
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | | | - Suman Kumar Ghosh
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Pallab Banerji
- Materials Science Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India
| | - Narayan Ch Das
- Rubber Technology Centre, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India; School of Nano Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, 721302, India.
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10
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Shahraki HS, Bushra R, Shakeel N, Ahmad A, Quratulen, Ahmad M, Ritzoulis C. Papaya Peel Waste Carbon Dots/Reduced Graphene Oxide Nanocomposite: from Photocatalytic Decomposition of Methylene Blue to Antimicrobial Activity. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2023. [DOI: 10.1016/j.jobab.2023.01.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
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11
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Cosma D, Urda A, Radu T, Rosu MC, Mihet M, Socaci C. Evaluation of the Photocatalytic Properties of Copper Oxides/Graphene/TiO2 Nanoparticles Composites. Molecules 2022; 27:molecules27185803. [PMID: 36144538 PMCID: PMC9502858 DOI: 10.3390/molecules27185803] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 08/24/2022] [Accepted: 09/02/2022] [Indexed: 11/16/2022] Open
Abstract
Easy and cost-efficient modifications of titanium dioxide nanoparticles that improve their efficiency in the visible light domain represent a continuous and challenging research topic. In addition, the effect of graphene on the overall photocatalytic process is still debated. Consequently, herein, we prepared a series of TiO2 nanoparticle-based composites with different copper oxide mass content (1–3%) and co-doped with graphene of different oxidation degrees. Different characterization techniques were used to analyze the structural and physico-chemical properties of the obtained composites: Scanning Electron Microscopy (SEM)/Transmission Electron Microscopy (TEM)/Energy-dispersive X-ray spectroscopy (EDX) analysis, X-ray powder diffraction (XRD), Fourier-transformed infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). The photocatalytic performance was evaluated by the degradation of methylene blue under both UVA and visible light irradiation. The nanocomposites show very good photocatalytic activity independent of the presence of reduced graphene oxide, due to the Cu2O/CuO-TiO2 heterojunctions. This finding has been confirmed by the very efficient visible-light-driven degradation of amoxicillin and ciprofloxacin.
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Affiliation(s)
- Dragos Cosma
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Alexandra Urda
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Faculty of Chemistry and Chemical Engineering, Babes-Bolyai University, 11 Arany Janos Street, 400028 Cluj-Napoca, Romania
| | - Teodora Radu
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Marcela C. Rosu
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Maria Mihet
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
| | - Crina Socaci
- National Institute for Research and Development of Isotopic and Molecular Technologies—INCDTIM, 67-103 Donat Street, 400293 Cluj-Napoca, Romania
- Correspondence:
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Rostami M, Badiei A, Ganjali MR, Rahimi-Nasrabadi M, Naddafi M, Karimi-Maleh H. Nano-architectural design of TiO 2 for high performance photocatalytic degradation of organic pollutant: A review. ENVIRONMENTAL RESEARCH 2022; 212:113347. [PMID: 35513059 DOI: 10.1016/j.envres.2022.113347] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Revised: 03/18/2022] [Accepted: 04/19/2022] [Indexed: 06/14/2023]
Abstract
In the past several decades, significant efforts have been paid toward photocatalytic degradation of organic pollutants in environmental research. During the past years, titanium dioxide nano-architectures (TiO2 NAs) have been widely used in water purification applications with photocatalytic degradation processes under Uv/Vis light illumination. Photocatalysis process with nano-architectural design of TiO2 is viewed as an efficient procedure for directly channeling solar energy into water treatment reactions. The considerable band-gap values and the subsequent short life time of photo-generated charge carriers are showed among the limitations of this approach. One of these effective efforts is the using of oxidation processes with advance semiconductor photocatalyst NAs for degradation the organic pollutants under UV/Vis irradiation. Among them, nano-architectural design of TiO2 photocatalyst (such as Janus, yolk-shell (Y@S), hollow microspheres (HMSs) and nano-belt) is an effective way to improve oxidation processes for increasing photocatalytic activity in water treatment applications. In the light of the above issues, this study tends to provide a critical overview of the used strategies for preparing TiO2 photocatalysts with desirable physicochemical properties like enhanced absorption of light, low density, high surface area, photo-stability, and charge-carrier behavior. Among the various nanoarchitectural design of TiO2, the Y@S and HMSs have created a great appeal given their considerable large surface area, low density, homogeneous catalytic environment, favorable light harvesting properties, and enhanced molecular diffusion kinetics of the particles. In this review was summarized the developments that have been made for nano-architectural design of TiO2 photocatalyst. Additional focus is placed on the realization of interfacial charge and the possibility of achieving charge carriers separation for these NAs as electron migration is the extremely important factor for increasing the photocatalytic activity.
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Affiliation(s)
- Mojtaba Rostami
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran
| | - Alireza Badiei
- School of Chemistry, College of Science, University of Tehran, Tehran, Iran.
| | - Mohammad Reza Ganjali
- Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran; Biosensor Research Center, Endocrinology and Metabolism Molecular Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mehdi Rahimi-Nasrabadi
- Chemical Injuries Research Center, Systems Biology and Poisonings Institute, Baqiyatallah University of Medical Sciences, Tehran, Iran; Faculty of Pharmacy, Baqiyatallah University of Medical Sciences, Tehran, Iran; Institute of Electronic and Sensor Materials, TU Bergakademie Freiberg, Freiberg, 09599, Germany
| | - Mastoureh Naddafi
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, PR China
| | - Hassan Karimi-Maleh
- School of Resources and Environment, University of Electronic Science and Technology of China, 611731, Xiyuan Ave, Chengdu, PR China; Department of Chemical Engineering, Quchan University of Technology, Quchan, 9477177870, Iran; Department of Chemical Sciences, University of Johannesburg, Doornfontein Campus 2028, Johannesburg, 17011, South Africa.
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13
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Pundi A, Chang CJ. Recent Advances in Synthesis, Modification, Characterization, and Applications of Carbon Dots. Polymers (Basel) 2022; 14:2153. [PMID: 35683827 PMCID: PMC9183192 DOI: 10.3390/polym14112153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Revised: 05/22/2022] [Accepted: 05/22/2022] [Indexed: 02/06/2023] Open
Abstract
Although there is significant progress in the research of carbon dots (CDs), some challenges such as difficulty in large-scale synthesis, complicated purification, low quantum yield, ambiguity in structure-property correlation, electronic structures, and photophysics are still major obstacles that hinder the commercial use of CDs. Recent advances in synthesis, modification, characterization, and applications of CDs are summarized in this review. We illustrate some examples to correlate process parameters, structures, compositions, properties, and performances of CDs-based materials. The advances in the synthesis approach, purification methods, and modification/doping methods for the synthesis of CDs are also presented. Moreover, some examples of the kilogram-scale fabrication of CDs are given. The properties and performance of CDs can be tuned by some synthesis parameters, such as the incubation time and precursor ratio, the laser pulse width, and the average molar mass of the polymeric precursor. Surface passivation also has a significant influence on the particle sizes of CDs. Moreover, some factors affect the properties and performance of CDs, such as the polarity-sensitive fluorescence effect and concentration-dependent multicolor luminescence, together with the size and surface states of CDs. The synchrotron near-edge X-ray absorption fine structure (NEXAFS) test has been proved to be a useful tool to explore the correlation among structural features, photophysics, and emission performance of CDs. Recent advances of CDs in bioimaging, sensing, therapy, energy, fertilizer, separation, security authentication, food packing, flame retardant, and co-catalyst for environmental remediation applications were reviewed in this article. Furthermore, the roles of CDs, doped CDs, and their composites in these applications were also demonstrated.
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Affiliation(s)
| | - Chi-Jung Chang
- Department of Chemical Engineering, Feng Chia University, 100, Wenhwa Road, Seatwen, Taichung 40724, Taiwan;
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14
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Zhang Z, Xue X, Chen X. A novel g-C 3N 4 nanosheet/Ag 3PO 4/α-Bi 2O 3 ternary dual Z-scheme heterojunction with increased light absorption and expanded specific surface area for efficient photocatalytic removal of TC. Dalton Trans 2022; 51:8015-8027. [PMID: 35551571 DOI: 10.1039/d2dt00737a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A novel ternary dual Z-scheme 2D g-C3N4 nanosheet/Ag3PO4/α-Bi2O3 (CNN/AP/BO) photocatalyst was successfully synthesized by an in situ deposition and hydrothermal-calcination method. The coupling of AP and BO remarkably enhanced the photocatalytic tetracycline (TC) degradation under visible light illumination, with an optimal removal efficiency of 91.6% (60 min), which can be attributed to the extended visible-light absorption and increased specific surface area owing to the interfacial intimate coupling with well-matched energy band positions between semiconductors. The improved photocatalytic activity resulted from the abundant free radicals by the order of ˙O2- > h+ > ˙OH based on the electron spin resonance (ESR) and quenching experiment results. In addition, the possible mechanism of TC degradation over the ternary dual Z-scheme heterojunction CNN/AP/BO was proposed.
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Affiliation(s)
- Zongyu Zhang
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Xiuling Xue
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
| | - Xiaoyi Chen
- College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China
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15
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Bhatti MA, Tahira A, Shah AA, Aftab U, Vigolo B, Khattab AR, Nafady A, Halepoto IA, Tonezzer M, Ibupoto ZH. Facile synthesis of a luminescent carbon material from yogurt for the efficient photocatalytic degradation of methylene blue. RSC Adv 2022; 12:25549-25564. [PMID: 36199347 PMCID: PMC9450116 DOI: 10.1039/d2ra04749g] [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: 07/29/2022] [Accepted: 08/22/2022] [Indexed: 11/21/2022] Open
Abstract
The present study is focused on yogurt as a simple, inexpensive, abundant, and green source for the preparation of luminescent carbon material for enhancing the photodegradation of methylene blue (MB). It introduces an ecological and sustainable approach for the large-scale production of carbon material using the direct thermal annealing of yogurt in a muffle furnace. The size of the as-prepared carbon material is about 200–300 nm, with average particle size distribution of 355 nm. The material exhibits clear luminescence under illumination with ultraviolet light. The synthesized carbon material shows an outstanding degradation functionality of MB under the irradiation of ultraviolet (UV) light in aqueous media. Various dye degradation parameters such as initial dye concentration, catalyst dose, pH of dye solution, and scavenger effects have been investigated. The optimum MB concentration was found to be 2.3 × 10−5 M with a degradation efficiency of 94.8%. The degradation was highly enhanced at pH 11 with a degradation efficiency of 98.11%. The degradation of MB under highly alkaline conditions was mainly governed by the high amount of hydroxyl radicals. Furthermore, the scavenger study confirmed that the hydroxyl radicals were mainly involved in the degradation process. The degradation kinetics of MB followed first order kinetics with large values of rate constant. The reusability was also studied to ensure the stability of the as-prepared carbon material during the degradation of MB. The preparation of carbon materials with efficient photosensitivity for the degradation of organic dyes from yogurt shows a green and innovative methodology. Therefore, it can be of great interest for future studies related to energy and environmental applications. Left hand side: structural and optical aspects of the as-prepared carbon material from yogurt. Right hand side: the absorbance spectra of methylene blue degradation using the as-prepared carbon material from yogurt.![]()
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Affiliation(s)
- Muhammad Ali Bhatti
- Institute of Environmental Sciences, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Aneela Tahira
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Aqeel Ahmed Shah
- Department of Metallurgy, NED University of Engineering and Technology, Karachi, Pakistan
| | - Umair Aftab
- Mehran University of Engineering and Technology, 7680 Jamshoro, Sindh, Pakistan
| | | | - Amira R. Khattab
- Department of Pharmacognosy, College of Pharmacy, Arab Academy for Science, Technology and Maritime Transport, Alexandria 1029, Egypt
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia
| | - Imran Ali Halepoto
- Institute of Physics University of Sindh, Jamshoro, 76080, Sindh, Pakistan
| | - Matteo Tonezzer
- IMEM-CNR, Sede di Trento-FBK, Via alla Cascata 56/C, 38123 Trento, Italy
| | - Zafar Hussain Ibupoto
- Dr. M. A. Kazi Institute of Chemistry, University of Sindh, Jamshoro, 76080, Sindh, Pakistan
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