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DFT insights into heteroatom-doped C60 nanocages as potential drug carriers for lorazepam 杂原子掺杂C60纳米笼作为劳拉西泮潜在药物载体的DFT见解
IF 5.8
Materials Advances Pub Date : 2026-05-27 DOI: 10.1039/D6MA00154H
Mariam M. Seliem, Mohamed M. Aboelnga, Elsayed El-Bayoumy and Mohsen El-Tahawy
{"title":"DFT insights into heteroatom-doped C60 nanocages as potential drug carriers for lorazepam","authors":"Mariam M. Seliem, Mohamed M. Aboelnga, Elsayed El-Bayoumy and Mohsen El-Tahawy","doi":"10.1039/D6MA00154H","DOIUrl":"https://doi.org/10.1039/D6MA00154H","url":null,"abstract":"<p >Efficient delivery of lorazepam remains challenging due to its poor aqueous solubility, limited bioavailability, and delayed onset of action. In this work, a density functional theory (DFT) study was conducted to investigate the adsorption behavior of lorazepam on pristine C<small><sub>60</sub></small>, SiC<small><sub>59</sub></small>, and GeC<small><sub>59</sub></small> nanostructures as potential drug delivery systems. Various adsorption configurations were optimized to identify the most stable binding modes and interaction mechanisms. The calculated adsorption energies indicate that C<small><sub>60</sub></small> exhibits relatively weaker interactions compared to doped systems, while silicon and germanium doping significantly enhance the adsorption strength. In particular, the SiC<small><sub>59</sub></small> system shows the highest stability, with adsorption energies reaching approximately −6.1 eV, indicating strong binding suitable for drug loading applications. GeC<small><sub>59</sub></small> also demonstrates enhanced adsorption compared to C<small><sub>60</sub></small>, although weaker than Si doping. Several analytical tools were employed, including reduced density gradient (RDG–NCI) analysis, partial density of states (PDOS), natural bond orbital (NBO) analysis, infrared (IR) spectroscopy, work function (<em>φ</em>), and HOMO–LUMO gap, which confirm significant electronic interaction and charge transfer between the drug and nanocarrier. Solvent effects further reveal that adsorption remains energetically favorable in aqueous environments. Importantly, protonation studies under acidic conditions demonstrate a significant weakening of the interaction, confirming the feasibility of a pH-responsive drug release mechanism. Overall, these findings highlight doped C<small><sub>60</sub></small> nanocages, especially SiC<small><sub>59</sub></small>, as promising candidates for efficient and controlled lorazepam delivery.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6133-6150"},"PeriodicalIF":5.8,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00154h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292194","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
Epoxy–glass fibre composite splash ring suppresses metal-derived lubricant contamination in splash lubrication systems 环氧玻璃纤维复合溅射环抑制溅射润滑系统中的金属衍生润滑剂污染
IF 5.8
Materials Advances Pub Date : 2026-05-27 DOI: 10.1039/D6MA00365F
M. Essam El-Rafey, Abbas E. Anwar, Ahmed Abdelrahman, Mervette El-Batouti and Mahmoud M. Elewa
{"title":"Epoxy–glass fibre composite splash ring suppresses metal-derived lubricant contamination in splash lubrication systems","authors":"M. Essam El-Rafey, Abbas E. Anwar, Ahmed Abdelrahman, Mervette El-Batouti and Mahmoud M. Elewa","doi":"10.1039/D6MA00365F","DOIUrl":"https://doi.org/10.1039/D6MA00365F","url":null,"abstract":"<p >Metallic components used in splash-lubricated mechanical systems can generate wear debris that accelerates lubricant degradation and contaminates the oil. In this work, a fibre-reinforced epoxy–glass composite splash ring was developed as a nonmetallic alternative to a conventional brass component. The composite ring was fabricated and evaluated in a laboratory lubrication rig operating at 3000 rpm for long-duration tests up to 1000 h. Oil samples were analysed using atomic absorption spectrometry, total acid number measurements, and gravimetric wear analysis, while surface morphology was examined by scanning electron microscopy. The composite component eliminated detectable Cu and Zn contamination in the lubricant and reduced oil oxidation, while increasing oil flow rate by approximately 66% compared with the brass reference component. The improved performance is attributed to the chemical inertness and favourable tribological behaviour of the epoxy–glass composite, which suppresses metal-catalysed oxidation reactions and reduces the generation of wear particles. These results demonstrate that fibre-reinforced polymer composites can provide an effective materials-based strategy for mitigating lubricant contamination and improving the operational reliability of splash-lubricated systems.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6359-6378"},"PeriodicalIF":5.8,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00365f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292126","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
An interface-enabled dual response in a self-biased n-Bi2S3/porous Si/p-Si heterostructured photodetector 自偏置n-Bi2S3/多孔Si/p-Si异质结构光电探测器的接口双响应
IF 5.8
Materials Advances Pub Date : 2026-05-27 DOI: 10.1039/D6MA00425C
Douaa B. Fahad, Haitham T. Hussein, Ethar Yahya Salih and Mustafa Kareem
{"title":"An interface-enabled dual response in a self-biased n-Bi2S3/porous Si/p-Si heterostructured photodetector","authors":"Douaa B. Fahad, Haitham T. Hussein, Ethar Yahya Salih and Mustafa Kareem","doi":"10.1039/D6MA00425C","DOIUrl":"https://doi.org/10.1039/D6MA00425C","url":null,"abstract":"<p >In this study, the fabrication process of a dual visible-NIR self-biased n-Bi<small><sub>2</sub></small>S<small><sub>3</sub></small>/porous Si/p-Si heterojunction photodetector using a rapid pulsed laser deposition (PLD) approach is systematically elucidated. The morphological observations revealed the porous nature of the fabricated porous Si layer with a pore diameter of ∼66 nm along with incorporated Bi<small><sub>2</sub></small>S<small><sub>3</sub></small> nanoparticles (∼38 nm), while the optical investigation revealed a band gap of 1.7 eV. The proposed geometry exhibited a low saturation dark current (∼35 nA) along with rectification on the order of 10<small><sup>2</sup></small>; this indicates a well-oriented junction along with the active role of the porous Si. The fabricated heterojunction demonstrated a dual response (575 and 720 nm) with responsivity values of 404 and 226 mA W<small><sup>−1</sup></small> at 5 V, respectively; these values were found to be decreased to 460.05 and 251 µA W<small><sup>−1</sup></small>, indicating a strong absorption in the active layer at 575 nm along with porous Si-related enhanced light trapping. A linear dependency was established between the evaluated figures-of-merit and the incident light intensity, with <em>R</em><small><sup>2</sup></small> values approaching ∼1. The fabricated device exhibited fast switching behavior with a rise/fall time of 101/116 ms and 124/163 ms at 575 and 720 nm, respectively, while a stable time-resolved characteristic over 30 days was also perceived.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6115-6122"},"PeriodicalIF":5.8,"publicationDate":"2026-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00425c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292192","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
Effect of polymerization of zwitterionic monomers on their intrinsic antifreeze activity 两性离子单体聚合对其固有抗冻活性的影响
IF 4.7
Materials Advances Pub Date : 2026-05-26 DOI: 10.1039/D6MA00147E
Shuya Tanaka, Masanori Nagao, Hayato Yoshitake, Hikaru Matsumoto, Yuji Higuchi and Yoshiko Miura
{"title":"Effect of polymerization of zwitterionic monomers on their intrinsic antifreeze activity","authors":"Shuya Tanaka, Masanori Nagao, Hayato Yoshitake, Hikaru Matsumoto, Yuji Higuchi and Yoshiko Miura","doi":"10.1039/D6MA00147E","DOIUrl":"https://doi.org/10.1039/D6MA00147E","url":null,"abstract":"<p >We synthesized amino acid–based zwitterionic monomers and investigated their ice recrystallization inhibition (IRI) activity. Among the materials examined, a serine-based zwitterionic acrylate exhibited superior IRI activity. Interestingly, the IRI activity of this zwitterionic acrylate was reduced after polymerization.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 11","pages":" 5483-5486"},"PeriodicalIF":4.7,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00147e?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196110","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
Green route synthesis of cobalt oxide nanoparticles with enhanced electrocatalytic performance for atrazine detection 绿色路线合成具有增强电催化性能的氧化钴纳米颗粒用于阿特拉津检测
IF 5.8
Materials Advances Pub Date : 2026-05-26 DOI: 10.1039/D6MA00476H
Simranjeet Singh, Pavithra N., Radhika Varshney, Praveen C. Ramamurthy, Joginder Singh and Nabila Shehata
{"title":"Green route synthesis of cobalt oxide nanoparticles with enhanced electrocatalytic performance for atrazine detection","authors":"Simranjeet Singh, Pavithra N., Radhika Varshney, Praveen C. Ramamurthy, Joginder Singh and Nabila Shehata","doi":"10.1039/D6MA00476H","DOIUrl":"https://doi.org/10.1039/D6MA00476H","url":null,"abstract":"<p >Developing sustainable strategies for monitoring pesticide contamination is vital to protect water quality and human health. In the present work, cobalt oxide nanoparticles were synthesized <em>via</em> a green route using the aqueous leaf extract of <em>Bauhinia purpurea L.</em> as a bio-reducing agent. A series of analytical techniques, including XRD, TGA, SEM, UV–Vis, XPS, and FTIR, was employed to verify the structural, morphological, optical, and surface chemical characteristics of the nanoparticles. The resulting Cobalt oxide nanoparticles exhibited strong electrocatalytic behavior and were utilized for the electrochemical determination of atrazine. Computational docking studies supported experimental observations by indicating stable interactions between atrazine molecules and the cobalt oxide surface, predominantly through hydrogen bonding. The fabricated sensor demonstrated a linear response from 20–200 µM with a detection limit of 11.8 µM and good selectivity toward atrazine. Application to distilled and wastewater samples demonstrated satisfactory recovery, confirming its practical utility. The study highlights an environmentally benign approach for nanoparticle fabrication and presents an effective platform for rapid atrazine monitoring in aqueous environments.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6322-6333"},"PeriodicalIF":5.8,"publicationDate":"2026-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00476h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292110","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
Breathable, water-repellent γ-MnOOH nest production by vapor-assisted conversion 通过蒸汽辅助转化生产透气,防水的γ-MnOOH巢
IF 5.8
Materials Advances Pub Date : 2026-05-22 DOI: 10.1039/D6MA00109B
Takahiro Kozawa, Kayo Fukuyama, Minoru Osada and Hiroya Abe
{"title":"Breathable, water-repellent γ-MnOOH nest production by vapor-assisted conversion","authors":"Takahiro Kozawa, Kayo Fukuyama, Minoru Osada and Hiroya Abe","doi":"10.1039/D6MA00109B","DOIUrl":"https://doi.org/10.1039/D6MA00109B","url":null,"abstract":"<p >Bird nests, formed by slender, semi-flexible twigs, are lightweight, freestanding porous frameworks with excellent permeability to gases and liquids. Translating this concept to microscale inorganic materials promises a broad impact on engineering and biomedical applications. However, constructing freestanding porous architectures from rigid one-dimensional (1D) particles remains challenging due to the directional processing and sparse interparticle contacts. To overcome these limitations, an <em>in situ</em> route for growing high-aspect-ratio 1D crystals within powder compacts is developed, yielding abundant, randomly oriented interparticle contacts. Exposing MnCO<small><sub>3</sub></small> to H<small><sub>2</sub></small>O<small><sub>2</sub></small>/H<small><sub>2</sub></small>O vapor at 200 °C drives vapor-assisted oxidative conversion to γ-MnOOH, producing hierarchical, nest-like porous frameworks. The resulting γ-MnOOH bodies exhibit high water permeability (≈140 L m<small><sup>−2</sup></small> h<small><sup>−1</sup></small>) and rapid evaporation (0.45–0.56 L m<small><sup>−2</sup></small> h<small><sup>−1</sup></small> at 40 °C), and simple postsynthetic surface modification imparts water repellency (contact angle of 169°). Because oxyhydroxides are versatile precursors for ceramic oxides, this approach provides a platform for entangled, binder-free inorganic architectures. This establishes a scalable and straightforward route to breathable porous materials, guided by the design logic of nature.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6091-6100"},"PeriodicalIF":5.8,"publicationDate":"2026-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00109b?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292186","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
Indentation of glasses that produce a boundary-forming annular crack 玻璃的压痕,产生形成边界的环形裂纹
IF 5.8
Materials Advances Pub Date : 2026-05-21 DOI: 10.1039/D6MA00421K
T. M. Gross, J. Wu, R. Yongsunthon, J. J. Price, R. E. Youngman, K. Singh, B. D. Fulmer and J. Jones
{"title":"Indentation of glasses that produce a boundary-forming annular crack","authors":"T. M. Gross, J. Wu, R. Yongsunthon, J. J. Price, R. E. Youngman, K. Singh, B. D. Fulmer and J. Jones","doi":"10.1039/D6MA00421K","DOIUrl":"https://doi.org/10.1039/D6MA00421K","url":null,"abstract":"<p >A series of boroaluminosilicate glasses are designed to span the range of Vickers indentation cracking behaviors. At one endpoint, median/radial cracking is observed, whereas the other endpoint exhibits ring and cone cracking. In the transition in cracking behavior across the glass series, a composition space is identified that produces a large boundary-forming annular crack that prevents the extension of radial cracks emanating from the indent impression. Indentation cross-sectioning shows that this unique cracking system forms as a traditional cone crack, which is then redirected back to the surface following unloading by residual stress. The percentage of volume displaced from 30 mN Berkovich scratch grooves was 10–15% for glasses that produce the annular crack. This places this new glass space on the anomalous end of the deformation continuum, but with more volume-conserving shear component than fully anomalous glass like silica. This unique combination of densification and shear enables the formation of the initial cone crack (densification contribution) and provides the residual stress (shear contribution) that causes the cone crack to be redirected back to the surface. Retardance measurements through the cross-section show that residual stresses initially associated with lateral crack extension interact with the cone crack to drive it back to the surface.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6045-6055"},"PeriodicalIF":5.8,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00421k?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292182","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
Multi-functional biomedical applications of nanoencapsulated herbal essential oils: polymer-based encapsulation strategies and key biological properties 纳米胶囊化草药精油的多功能生物医学应用:基于聚合物的胶囊化策略和关键生物学特性
IF 5.8
Materials Advances Pub Date : 2026-05-21 DOI: 10.1039/D5MA01412C
Hamid Rajabi, Utcharaporn Kamsrijai, Narudol Teerapattarakan, Sulukkana Noiprasert, Huang Zhaoxian, Marc Pignitter and Saroat Rawdkuen
{"title":"Multi-functional biomedical applications of nanoencapsulated herbal essential oils: polymer-based encapsulation strategies and key biological properties","authors":"Hamid Rajabi, Utcharaporn Kamsrijai, Narudol Teerapattarakan, Sulukkana Noiprasert, Huang Zhaoxian, Marc Pignitter and Saroat Rawdkuen","doi":"10.1039/D5MA01412C","DOIUrl":"https://doi.org/10.1039/D5MA01412C","url":null,"abstract":"<p >Herbal essential oils (HEOs) possess broad-spectrum biological activity but their biomedical translation is limited by volatility, poor aqueous solubility, chemical instability, and compositional variability. This review critically synthesizes recent advances in polymer-based nanoencapsulation as a strategy to modulate the physicochemical and biological behavior of HEOs. Delivery platforms including polymeric nanoparticles, nanoemulsions, hydrogels/nanogels, electrospun nanofibers, and hybrid assemblies are analyzed with emphasis on structure–function relationships. Particular attention is given to how polymer selection governs mucoadhesion, degradability, release kinetics, cellular interaction, and compatibility with hydrophobic phytoconstituents. Across diverse biomedical contexts, encapsulation consistently alters exposure profiles and improves therapeutic indices relative to free oils, enhancing antimicrobial and antibiofilm performance, modulating inflammatory and oxidative pathways, promoting wound repair, and increasing selective cytotoxicity in cancer models. These effects are linked to improved physicochemical stabilization, controlled release behavior, and architecture-dependent cellular uptake mechanisms. Despite substantial progress, translational barriers remain, including limited long-term <em>in vivo</em> safety data, challenges in chemotype standardization, batch-to-batch variability, and constraints in GMP-compliant scale-up. Future development will depend on integrating rigorous quality control, scalable manufacturing technologies, and data-driven formulation design to establish clinically and industrially viable HEO-based nanotherapeutic systems.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 5937-5969"},"PeriodicalIF":5.8,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d5ma01412c?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292149","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
Designing PANI-modified PU films coupled with CNTs for enhanced shape memory properties 设计聚苯胺改性的聚氨酯薄膜,偶联碳纳米管增强形状记忆性能
IF 5.8
Materials Advances Pub Date : 2026-05-21 DOI: 10.1039/D5MA01178G
Tehmeena Ishaq, Rabia Sattar, Rabia Naeem, Mahwish Iqbal and Sana Ullah
{"title":"Designing PANI-modified PU films coupled with CNTs for enhanced shape memory properties","authors":"Tehmeena Ishaq, Rabia Sattar, Rabia Naeem, Mahwish Iqbal and Sana Ullah","doi":"10.1039/D5MA01178G","DOIUrl":"https://doi.org/10.1039/D5MA01178G","url":null,"abstract":"<p >Polyurethane (PU)-based shape memory polymers are considered a supreme choice for shape recovery applications. However, they face problems with their mechanical and thermal properties, which can lead to significant challenges in their development and practical implications. Herein, an effectual and novel strategy has been adopted to overcome these limitations by incorporating CNTs along with polyaniline into the PU chains to form a ternary PU-based nanocomposite. By introducing these conductive fillers, an exceptional elongation at break (18.35%), a higher thermal stability (up to 342 °C), an optimal Young's modulus (456.49 MPa) and high tensile strength (26.49 MPa) were achieved. However, a higher shape recovery aptitude (97%), higher shape fixity (98%) and an enhanced electrical conductivity of 5.00 × 10<small><sup>−2</sup></small> S cm<small><sup>−1</sup></small> were achieved for the ternary hybrid. Overall, the PANI/f-CNTs@PU nanocomposite designed in the current study depicted ideal shape memory parameters, which can be credited to the combined effect of the CNTs and PANI in the PU matrix. The fabricated nanocomposite PANI/f-CNTs@PU can be further utilized in various memory-based applications of materials in diversified industrial applications, including sensors, self-healing materials, electronics, <em>etc</em>.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 12","pages":" 6334-6342"},"PeriodicalIF":5.8,"publicationDate":"2026-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d5ma01178g?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148292111","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
Waste-to-work photocatalysis: orange-peel-derived CQD@CdS/biochar hybrids enabling efficient visible-light-driven dye mineralisation and mechanistic elucidation 废物到工作的光催化:橘子皮衍生的CQD@CdS/生物炭混合物,实现高效的可见光驱动染料矿化和机制阐明
IF 4.7
Materials Advances Pub Date : 2026-05-20 DOI: 10.1039/D6MA00043F
Akash M. Nair, Palkaran Sethi, Jasminder Singh and Soumen Basu
{"title":"Waste-to-work photocatalysis: orange-peel-derived CQD@CdS/biochar hybrids enabling efficient visible-light-driven dye mineralisation and mechanistic elucidation","authors":"Akash M. Nair, Palkaran Sethi, Jasminder Singh and Soumen Basu","doi":"10.1039/D6MA00043F","DOIUrl":"https://doi.org/10.1039/D6MA00043F","url":null,"abstract":"<p >The uncontrolled discharge of organic dyes into aquatic systems necessitates the development of efficient and sustainable photocatalysts for environmental remediation. In this work, a green and resource-efficient strategy was employed to synthesize a CQD@CdS/biochar nanocomposite using orange peel waste as a renewable carbon precursor and aloe vera extract as a natural reaction medium. Structural and physicochemical characterization using XRD, FTIR, XPS, FESEM, UV–Vis DRS, PL, and BET confirmed the successful formation of the composite. The photocatalytic activity was evaluated through the degradation of methylene blue under visible-light irradiation. Among the prepared samples, the optimized 5% CQD@CdS/biochar (5CC) composite exhibited superior performance, achieving 96.2% dye removal within 120 min and following pseudo-first-order kinetics with a rate constant of 0.0061 min<small><sup>−1</sup></small>, outperforming the pristine materials and TiO<small><sub>2</sub></small>-P25. The catalyst also demonstrated good stability, retaining 89.6% of its activity after five reuse cycles. Radical trapping experiments revealed ˙OH radicals as the dominant reactive species responsible for degradation. Furthermore, significant mineralization was confirmed by COD and TOC reductions of 63% and 66%, respectively, supported by HRMS identification of degradation intermediates and a proposed reaction pathway. These findings highlight the potential of waste-derived CQD@CdS/biochar as an efficient photocatalyst for visible-light-driven wastewater treatment.</p>","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 11","pages":" 5791-5805"},"PeriodicalIF":4.7,"publicationDate":"2026-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2026/ma/d6ma00043f?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148196214","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
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