C—Journal of Carbon Research最新文献

Metal-Doped Carbon Dots as Heterogeneous Fenton Catalysts for the Decolourisation of Dyes—Activity Relationships and Mechanistic Insights 金属掺杂碳点作为非均相Fenton染料脱色催化剂的活性关系及机理研究

C—Journal of Carbon Research Pub Date : 2025-11-20 DOI: 10.3390/c11040087

Weiyun Chen, Ivan Cole, Andrew S. Ball, Hong Yin

{"title":"Metal-Doped Carbon Dots as Heterogeneous Fenton Catalysts for the Decolourisation of Dyes—Activity Relationships and Mechanistic Insights","authors":"Weiyun Chen, Ivan Cole, Andrew S. Ball, Hong Yin","doi":"10.3390/c11040087","DOIUrl":"https://doi.org/10.3390/c11040087","url":null,"abstract":"The removal of synthetic dyes from industrial effluents remains challenging due to their chemical stability and poor biodegradability. Here we engineer metal-doped carbon dots (CDs) as heterogeneous Fenton-like catalysts and elucidate how dopant identity governs structure–activity relationships and reactive oxygen species (ROS) pathways. Fe-, Cu-, Zn- and Mg-doped CDs were prepared via a one-pot hydrothermal route and comprehensively characterised by TEM, FTIR, XPS and zeta-potential analysis. The resulting nanoparticles displayed narrow size distributions (10.2–15.2 nm) and dopant-dependent surface chemistries and charges. Catalytic tests with methylene blue (MB) and rhodamine B (RB) show that Fe-doped CDs deliver the highest activity toward MB degradation (k = 0.0218 min−1), attributable to efficient Fe2+/Fe3+ redox cycling coupled with hydroxyl-rich surfaces that promote H2O2 activation. Zn-doped CDs achieve complete RB decolourisation under Fenton-like conditions, which we ascribe to their higher surface charge and abundant oxygenated sites that enhance pollutant adsorption and ROS generation. Cu- and Mg-doped CDs exhibit intermediate and dopant-specific performances consistent with their respective redox and adsorption characteristics. Collectively, these results establish clear correlations between dopant chemistry, surface functionality, and ROS formation routes, providing mechanistic guidance for the rational design of carbon-based Fenton catalysts for sustainable water remediation.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 4","pages":"87-87"},"PeriodicalIF":0.0,"publicationDate":"2025-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147908483","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Enhanced Removal of Photosensitive Antibiotics in Water Using CO2: A Beneficial Exploration of CO2 Resource Utilization 利用CO2强化去除水中光敏抗生素：CO2资源利用的有益探索

C—Journal of Carbon Research Pub Date : 2025-10-09 DOI: 10.3390/c11040075

Miaomiao Ye, Jiayan Wu, Qiuyuan Weng, Tengchao Bi, Xiaowei Liu

{"title":"Enhanced Removal of Photosensitive Antibiotics in Water Using CO2: A Beneficial Exploration of CO2 Resource Utilization","authors":"Miaomiao Ye, Jiayan Wu, Qiuyuan Weng, Tengchao Bi, Xiaowei Liu","doi":"10.3390/c11040075","DOIUrl":"https://doi.org/10.3390/c11040075","url":null,"abstract":"The utilization of carbon dioxide (CO2) offers an effective approach for alleviating the carbon-reduction pressures associated with fossil energy consumption. However, studies on the use of CO2 as an auxiliary agent in water treatment to enhance the removal of emerging contaminants are limited. In this study, the photodegradation of ciprofloxacin (CIP) was investigated using ultraviolet (UV) irradiation combined with CO2 dosing (UV/CO2). The results demonstrated that the UV/CO2 system effectively degraded CIP, with CO2 concentration and solution pH exerting a critical influence. Inorganic anions and metal cations had negligible effects on CIP degradation efficiency, whereas natural organic matter (NOM) had a pronounced inhibitory effect. Mechanistic analysis revealed that superoxide radicals (·O2-) and carbonate radicals (CO3•-) were the primary oxidizing species, whereas the excited triplet state of CIP (3CIP*) and singlet oxygen played crucial roles in initiating radical generation. LC–MS analysis and density functional theory calculations indicated that the main degradation routes involved defluorination, decarboxylation, and epoxidation of the piperazine ring. Toxicity assessment indicated that the transformation products generated by UV/CO2 were less toxic than the parent compound. Furthermore, the UV/CO2 process demonstrated high energy efficiency, with a low electrical energy per order (EEO) value of 0.4193 kWh·m−3·order−1. These findings suggest that the UV/CO2 system is a promising alternative for the treatment of photosensitive organic pollutants and provides a beneficial pathway for CO2 utilization.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 4","pages":"75-75"},"PeriodicalIF":0.0,"publicationDate":"2025-10-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/4/75/pdf?version=1760001852","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147881533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Enhanced Electrocatalytic Activity for ORR Based on Synergistic Effect of Hierarchical Porosity and Co-Nx Sites in ZIF-Derived Heteroatom-Doped Carbon Materials 基于层状孔隙和Co-Nx位点协同效应的zif衍生杂原子掺杂碳材料中ORR电催化活性的增强

C—Journal of Carbon Research Pub Date : 2025-09-08 DOI: 10.3390/c11030070

Yan Yang, Amin Tan, Qiu-Xuan Ren, Gai Zhang

{"title":"Enhanced Electrocatalytic Activity for ORR Based on Synergistic Effect of Hierarchical Porosity and Co-Nx Sites in ZIF-Derived Heteroatom-Doped Carbon Materials","authors":"Yan Yang, Amin Tan, Qiu-Xuan Ren, Gai Zhang","doi":"10.3390/c11030070","DOIUrl":"https://doi.org/10.3390/c11030070","url":null,"abstract":"The hierarchical porosity and active sites of porous carbon materials have significant impacts on the oxygen reduction reaction (ORR) process. The heteroatom-doped porous carbon materials (Z67-900, Z8-900, Z11-900, Z12-900) were synthesized by pyrolysis of ZIFs to reveal the synergistic effect of hierarchical porosity and Co-Nx sites. The structures of prepared materials were characterized by X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Raman spectra, and nitrogen adsorption. The results of electrocatalytic performance show that Z67-900 has the best performance among the four materials prepared. The onset potential (E0) of Z67-900 is close to commercial Pt/C (20%), and the half-wave potential (E1/2) of Z67-900 is 80 mV positive than that of Pt/C in an O2-saturated 0.1 M KOH solution (1600 rpm) with sweep rate of 5 mV·s−1. Moreover, Z67-900 has better methanol resistance. The hierarchical pore structure of Z67-900 facilitates mass transfer, while the Co-Nx sites provide active catalytic centers. This study provides a solid foundation for the rational design of highly efficient ZIF-derived heteroatom-doped catalysts.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 3","pages":"70-70"},"PeriodicalIF":0.0,"publicationDate":"2025-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/3/70/pdf?version=1757318878","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147916446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Graphene Oxide Promoted Light Activation of Peroxymonosulfate for Highly Efficient Triphenyl Phosphate Degradation 氧化石墨烯促进过氧单硫酸盐光活化高效降解磷酸三苯酯

C—Journal of Carbon Research Pub Date : 2025-08-21 DOI: 10.3390/c11030065

Yilong Li, Yi Xie, Xuqian Wang, Yabo Wang

{"title":"Graphene Oxide Promoted Light Activation of Peroxymonosulfate for Highly Efficient Triphenyl Phosphate Degradation","authors":"Yilong Li, Yi Xie, Xuqian Wang, Yabo Wang","doi":"10.3390/c11030065","DOIUrl":"https://doi.org/10.3390/c11030065","url":null,"abstract":"The treatment of organic phosphate ester (OPE) pollutants in water is a challenging but highly necessary task. In this study, an advanced oxidation process through light activation of peroxymonosulfate (PMS) involving graphene oxide (GO) as a promoter was developed to degrade OPE in water, taking triphenyl phosphate (TPhP) as an example. The developed “Light+PMS+GO” system demonstrated good convenience, high TPhP degradation efficiency, tolerance in a near-neutral pH, satisfactory re-usability, and a low toxicity risk of degradation products. Under the investigated reaction conditions, viz., the full spectrum of a 300 W Xe lamp, PMS of 200 mg L−1, GO of 4 mg L−1, and TPhP of 10 μmol L−1, the “Light+PMS+GO” system achieved nearly 100% TPhP degradation efficiency during a 15 min reaction duration with a 5.81-fold enhancement in the reaction rate constant, compared with the control group without GO. Through quenching experiments and electron paramagnetic resonance studies, singlet oxygen was identified as the main reactive species for TPhP degradation. Further studies implied that GO could accumulate both oxidants and pollutants on the surface, providing additional reaction sites for PMS activation and accelerating electron transfer, which all contributed to the enhancement of TPhP degradation. Finally, the TPhP degradation pathway was proposed and a preliminary toxicity evaluation of degradation intermediates was conducted. The convenience, high removal efficiency, and good re-usability indicates that the developed “Light+PMS+GO” reaction system has great potential for future applications.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 3","pages":"65-65"},"PeriodicalIF":0.0,"publicationDate":"2025-08-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/3/65/pdf?version=1755780793","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147333858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Dual pH- and Temperature-Responsive Fluorescent Hybrid Materials Based on Carbon Dot-Grafted Triamino-Tetraphenylethylene/N-Isopropylacrylamide Copolymers 基于碳点接枝三氨基四苯基乙烯/ n -异丙基丙烯酰胺共聚物的双pH和温度响应荧光杂化材料

C—Journal of Carbon Research Pub Date : 2025-07-22 DOI: 10.3390/c11030053

Huan Liu, Yuxin Ding, Longping Zhou, Shirui Xu, Bo Liao

{"title":"Dual pH- and Temperature-Responsive Fluorescent Hybrid Materials Based on Carbon Dot-Grafted Triamino-Tetraphenylethylene/N-Isopropylacrylamide Copolymers","authors":"Huan Liu, Yuxin Ding, Longping Zhou, Shirui Xu, Bo Liao","doi":"10.3390/c11030053","DOIUrl":"https://doi.org/10.3390/c11030053","url":null,"abstract":"Carbon dots (CDs), a class of carbon-based fluorescent nanomaterials, have garnered significant attention due to their tunable optical properties and functional versatility. In this study, we developed a hybrid material by grafting pH- and temperature-responsive copolymers onto CDs via reversible addition-fragmentation chain-transfer (RAFT) polymerization. Triamino-tetraphenylethylene (ATPE) and N-isopropylacrylamide (NIPAM) were copolymerized at varying ratios and covalently linked to CDs, forming a dual-responsive system. Structural characterization using FTIR, 1H NMR, and TEM confirmed the successful grafting of the copolymers onto CDs. The hybrid material exhibited pH-dependent fluorescence changes in acidic aqueous solutions, with emission shifting from 450 nm (attributed to CDs) to 500 nm (aggregation-induced emission, AIE, from ATPE) above a critical pH threshold. Solid films of the hybrid material demonstrated reversible fluorescence quenching under HCl vapor and recovery/enhancement under NH3 vapor, showing excellent fatigue resistance over multiple cycles. Temperature responsiveness was attributed to the thermosensitive poly(NIPAM) segments, with fluorescence intensity increasing above 35 °C due to polymer chain collapse and ATPE aggregation. This work provides a strategy for designing multifunctional hybrid materials with potential applications in recyclable optical pH/temperature sensors.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 3","pages":"53-53"},"PeriodicalIF":0.0,"publicationDate":"2025-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/3/53/pdf?version=1753184767","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883178","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Bimetallic Copper–Indium Co-Doped Titanium Dioxide Towards Electrosynthesis of Urea from Carbon Dioxide and Nitrate 双金属铜铟共掺杂二氧化钛在二氧化碳和硝酸盐电合成尿素中的应用

C—Journal of Carbon Research Pub Date : 2025-06-27 DOI: 10.3390/c11030044

Youcai Meng, Tianran Wei, Zhiwei Wang, Cai‐Yun Wang, Junyang Ding, Yang Luo, Xijun Liu

{"title":"Bimetallic Copper–Indium Co-Doped Titanium Dioxide Towards Electrosynthesis of Urea from Carbon Dioxide and Nitrate","authors":"Youcai Meng, Tianran Wei, Zhiwei Wang, Cai‐Yun Wang, Junyang Ding, Yang Luo, Xijun Liu","doi":"10.3390/c11030044","DOIUrl":"https://doi.org/10.3390/c11030044","url":null,"abstract":"Electrocatalytic urea synthesis offers great potential for sustainable strategies through CO2 and NO3− reduction reactions. However, the development of high-performance catalysts is often hampered by the complexity of synthetic methodologies and the unresolved nature of C-N coupling pathways. In this study, we present a copper–indium co-doped titanium dioxide (CuIn-TiO2) catalyst that exhibits remarkable efficacy in enhancing the synergistic reduction of CO2 and NO3− to produce urea. The bimetallic CuIn site functions as the primary active site for the C-N coupling reaction, achieving a urea yield rate of 411.8 μg h−1 mgcat−1 with a Faradaic efficiency of 6.7% at −0.8 V versus reversible hydrogen electrode (vs. RHE). A body of experimental and theoretical research has demonstrated that the nanoscale particles enhance the density of active sites and improve the feasibility of reactions on the surface of TiO2. The co-doping of Cu and In has been shown to significantly enhance electronic conductivity, increase the adsorption affinity for *CO2 and *NO3−, and promote the C-N coupling process. The CuIn-TiO2 catalyst has been demonstrated to effectively promote the reduction of NO3− and CO2, as well as accelerate the C-N coupling reaction. This effect is a result of a synergistic interaction among the catalyst’s components.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 3","pages":"44-44"},"PeriodicalIF":0.0,"publicationDate":"2025-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/3/44/pdf?version=1751277468","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147330839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation and Properties of C/C-(TiZrHfNbTa)C Composites via Inorganic Salt Precursor Method 无机盐前驱体法制备C/C-(TiZrHfNbTa)C复合材料及其性能

C—Journal of Carbon Research Pub Date : 2025-06-25 DOI: 10.3390/c11030041

Haibo Ouyang, Jiyong Liu, Cuiyan Li, Tianzhan Shen, Jiaqi Liu, Mengyao He, Yanlei Li, Leer Bao

{"title":"Preparation and Properties of C/C-(TiZrHfNbTa)C Composites via Inorganic Salt Precursor Method","authors":"Haibo Ouyang, Jiyong Liu, Cuiyan Li, Tianzhan Shen, Jiaqi Liu, Mengyao He, Yanlei Li, Leer Bao","doi":"10.3390/c11030041","DOIUrl":"https://doi.org/10.3390/c11030041","url":null,"abstract":"Using low-cost transition-metal chlorides and furfuryl alcohol as raw materials, the (TiZrHfNbTa)C precursor was prepared, and a three-dimensional braided carbon fiber preform (C/C) coated with pyrolytic carbon (PyC) was used as the reinforcing material. A C/C-(TiZrHfNbTa)C composite was successfully fabricated through the precursor impregnation pyrolysis (PIP) process. Under extreme oxyacetylene ablation conditions (2311 °C/60 s), this composite material demonstrated outstanding ablation resistance, with a mass ablation rate as low as 0.67 mg/s and a linear ablation rate of only 20 μm/s. This excellent performance can be attributed to the dense (HfZr)6(TaNb)2O17 oxide layer formed during ablation. This oxide layer not only has an excellent anti-erosion capability but also effectively acts as an oxygen diffusion barrier, thereby significantly suppressing further ablation and oxidation within the matrix. This study provides an innovative strategy for the development of low-cost ultra-high-temperature ceramic precursors and opens up a feasible path for the efficient preparation of C/C-(TiZrHfNbTa)C composites.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 3","pages":"41-41"},"PeriodicalIF":0.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/3/41/pdf?version=1750843482","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147893180","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fabrication of Wood-Derived Carbon Aerogel/Mg(OH)2 Bio-Composite and Its High Performance for Adsorption and Separation of Cadmium Ions 木源炭气凝胶/Mg(OH)2生物复合材料的制备及其对镉离子的高效吸附和分离

C—Journal of Carbon Research Pub Date : 2025-05-06 DOI: 10.3390/c11020032

Ran An, Jinyue Liu, Haoran Ma, Yuqing Yan, Yuan‐Ru Guo, Qing‐Jiang Pan, Shujun Li

{"title":"Fabrication of Wood-Derived Carbon Aerogel/Mg(OH)2 Bio-Composite and Its High Performance for Adsorption and Separation of Cadmium Ions","authors":"Ran An, Jinyue Liu, Haoran Ma, Yuqing Yan, Yuan‐Ru Guo, Qing‐Jiang Pan, Shujun Li","doi":"10.3390/c11020032","DOIUrl":"https://doi.org/10.3390/c11020032","url":null,"abstract":"To address the need for reducing carbon emissions and enhancing the sustainable utilization of non-fossil resources, a one-step calcination strategy has been developed to fabricate hierarchical carbon aerogels from balsa wood. The resulting wood-derived carbon aerogels (WCA) were functionalized with Mg(OH)2 to boost their environmental remediation potential. Comprehensive characterization using XRD, FT-IR, XPS, and SEM confirmed that the optimized WCA/Mg(OH)2 composite (WCAMg) retained a three-dimensional hierarchical porous structure, and Mg(OH)2 nanosheets were attached to it. The adsorption performance of WCAMg composites towards Cd2+ was systematically investigated through controlled experiments, which focused on three critical variables (Mg(OH)2 loading content, initial Cd2+ concentration and solution ionic strength). The functionalized WCAMg demonstrated a maximum Cd2+ adsorption capacity of 351.1 mg g−1—a tenfold improvement over pristine WCA. Combined with exceptional adsorption efficiency, this biomass-derived composite offers an eco-friendly, cost-effective solution for heavy metal ion remediation. Its scalable fabrication from renewable resources aligns with sustainable water treatment objectives, presenting the advantage of pollution mitigation.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"11 2","pages":"32-32"},"PeriodicalIF":0.0,"publicationDate":"2025-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/11/2/32/pdf?version=1746579662","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147899494","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Electron Beam-Irradiated Cross-Linked Polyethylene Composites Containing Graphene Nanoplatelets for Thermally Conducting Pipes 热传导管道用电子束辐照含石墨烯纳米片交联聚乙烯复合材料

C—Journal of Carbon Research Pub Date : 2025-05-04 DOI: 10.3390/c11020031

Wenge Xu, Kuan Lu, Huinan Li, Xiong Chen, Yang Liu, Baijun Liu

引用次数: 3

Enhanced Antibacterial Activity of Carbon Dots: A Hybrid Approach with Levofloxacin, Curcumin, and Tea Polyphenols 碳点与左氧氟沙星、姜黄素和茶多酚混合增强抗菌活性

C—Journal of Carbon Research Pub Date : 2024-09-15 DOI: 10.3390/c10030084

Khurram Abbas, Haimei Zhu, Weixia Qin, Meiyan Wang, Zi‐Jian Li, Hong Bi

{"title":"Enhanced Antibacterial Activity of Carbon Dots: A Hybrid Approach with Levofloxacin, Curcumin, and Tea Polyphenols","authors":"Khurram Abbas, Haimei Zhu, Weixia Qin, Meiyan Wang, Zi‐Jian Li, Hong Bi","doi":"10.3390/c10030084","DOIUrl":"https://doi.org/10.3390/c10030084","url":null,"abstract":"Bacterial infections and their increasing resistance to antibiotics pose a significant challenge in medical treatment. This study presents the synthesis and characterization of novel carbon dots (CDs) using levofloxacin (Lf), curcumin (Cur), and tea polyphenols (TP) through a facile hydrothermal method. The synthesized curcumin-tea polyphenol@carbon dots (Cur-TP@CDs) and levofloxacin-tea polyphenol@carbon dots (Lf-TP@CDs) were characterized using transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy, confirming their unique structural and chemical properties. Cur-TP@CDs exhibited an average particle size of 1.32 nanometers (nm), while Lf-TP@CDs averaged 1.58 nm. Both types demonstrated significant antibacterial activity, with Lf-TP@CDs showing superior effectiveness against Staphylococcus aureus (S. aureus) and Escherichia coli (E. coli) in broth dilution and disc diffusion assays. Biofilm inhibition assays revealed a significant reduction in biofilm formation at higher concentrations. The ultraviolet-visible (UV-vis) and photoluminescence (PL) spectral analyses indicated efficient photon emission, and electron paramagnetic resonance (EPR) analysis showed increased singlet oxygen generation, enhancing bactericidal effects. Live and dead bacterial staining followed by scanning electron microscopy (SEM) analysis confirmed dose-dependent bacterial cell damage and morphological deformities. These findings suggest that Cur-TP@CDs and Lf-TP@CDs are promising antibacterial agents, potentially offering a novel approach to combat antibiotic-resistant bacterial infections.","PeriodicalId":327502,"journal":{"name":"C—Journal of Carbon Research","volume":"10 3","pages":"84-84"},"PeriodicalIF":0.0,"publicationDate":"2024-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2311-5629/10/3/84/pdf?version=1726733081","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147915136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5