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A review on the green synthesis of metal (Ag, Cu, and Au) and metal oxide (ZnO, MgO, Co3O4, and TiO2) nanoparticles using plant extracts for developing antimicrobial properties 利用植物提取物绿色合成金属(Ag、Cu和Au)和金属氧化物(ZnO、MgO、Co3O4和TiO2)纳米粒子的研究进展
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-07 DOI: 10.1039/D5NA00037H
Israt Jahan Lithi, Kazi Imtiaz Ahmed Nakib, A. M. Sarwaruddin Chowdhury and Md. Sahadat Hossain
{"title":"A review on the green synthesis of metal (Ag, Cu, and Au) and metal oxide (ZnO, MgO, Co3O4, and TiO2) nanoparticles using plant extracts for developing antimicrobial properties","authors":"Israt Jahan Lithi, Kazi Imtiaz Ahmed Nakib, A. M. Sarwaruddin Chowdhury and Md. Sahadat Hossain","doi":"10.1039/D5NA00037H","DOIUrl":"https://doi.org/10.1039/D5NA00037H","url":null,"abstract":"<p >Green synthesis (GS) is a vital method for producing metal nanoparticles with antimicrobial properties. Unlike traditional methods, green synthesis utilizes natural substances, such as plant extracts, microorganisms, <em>etc.</em>, to create nanoparticles. This eco-friendly approach results in non-toxic and biocompatible nanoparticles with superior antimicrobial activity. This paper reviews the prospects of green synthesis of metal nanoparticles of silver (Ag), copper (Cu), gold (Au) and metal oxide nanoparticles of zinc (ZnO), magnesium (MgO), cobalt (Co<small><sub>3</sub></small>O<small><sub>4</sub></small>), and titanium (TiO<small><sub>2</sub></small>) using plant extracts from tissues of leaves, barks, roots, <em>etc.</em>, antibacterial mechanisms of metal and metal oxide nanoparticles, and obstacles and factors that need to be considered to overcome the limitations of the green synthesis process. The clean surfaces and minimal chemical residues of these nanoparticles contribute to their effectiveness. Certain metals exhibit enhanced antibacterial properties only in GS methods due to the presence of bioactive compounds from natural reducing agents such as Au and MgO. GS improves TiO<small><sub>2</sub></small> antibacterial properties under visible light, while it would be impossible without UV activation. These nanoparticles have important antimicrobial properties for treating microbial infections and combating antibiotic resistance against bacteria, fungi, and viruses by disrupting microbial membranes, generating ROS, and interfering with DNA and protein synthesis. Nanoscale size and large surface area make them critical for developing advanced antimicrobial treatments. They are effective antibacterial agents for treating infections, suitable in water purification systems, and fostering innovation by creating green, economically viable antibacterial materials. Therefore, green synthesis of metal and metal oxide nanoparticles for antibacterial agents supports several United Nations Sustainable Development Goals (SDGs), including health improvement, sustainability, and innovation.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 9","pages":" 2446-2473"},"PeriodicalIF":4.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2025/na/d5na00037h?page=search","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143888526","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fe2O3–rice straw carbon dot composite for simultaneous electrochemical detection of dopamine and salbutamol fe2o3 -稻草炭点复合材料同时电化学检测多巴胺和沙丁胺醇。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-07 DOI: 10.1039/D5NA00065C
Nguyen Van Hop, Nguyen Le My Linh, Vo Chau Ngoc Anh, Do Mai Nguyen and Tran Thanh Tam Toan
{"title":"Fe2O3–rice straw carbon dot composite for simultaneous electrochemical detection of dopamine and salbutamol","authors":"Nguyen Van Hop, Nguyen Le My Linh, Vo Chau Ngoc Anh, Do Mai Nguyen and Tran Thanh Tam Toan","doi":"10.1039/D5NA00065C","DOIUrl":"10.1039/D5NA00065C","url":null,"abstract":"<p >A novel electrochemical sensor was developed using a composite of iron oxide (Fe<small><sub>2</sub></small>O<small><sub>3</sub></small>) and rice straw-based carbon dots (RSCD) for the simultaneous detection of dopamine (DPM) and salbutamol (SBT). By modifying a glassy carbon electrode (GCE) with the synthesized composite, the sensor achieved detection limits of 0.02 μM for DPM and 0.03 μM for SBT, with a linear range extending from 0.1 to 92 μM. Differential pulse voltammetry (DPV) demonstrated the sensor's enhanced sensitivity, selectivity, and resolution of overlapping oxidation peaks, overcoming key limitations of existing methods. Practical applications in neurotransmitter monitoring and food safety were validated using actual samples, highlighting the sensor's accuracy and reliability. This study introduces a scalable and cost-effective solution for electrochemical sensing with significant potential for broader societal impact.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 9","pages":" 2554-2567"},"PeriodicalIF":4.6,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11897740/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143625339","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Microfluidic generation of nanoparticles using standing wave induced ultrasonic spray drying† 利用驻波诱导超声喷雾干燥制备微流控纳米颗粒。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-06 DOI: 10.1039/D4NA01012D
Holger Bolze, Keiran Mc Carogher and Simon Kuhn
{"title":"Microfluidic generation of nanoparticles using standing wave induced ultrasonic spray drying†","authors":"Holger Bolze, Keiran Mc Carogher and Simon Kuhn","doi":"10.1039/D4NA01012D","DOIUrl":"10.1039/D4NA01012D","url":null,"abstract":"<p >Spray drying is a well-established process for generating particles for various applications, including pharmaceuticals. In this process, atomization plays a crucial role by defining the size of the droplets and, consequently, particle size. While ultrasound is commonly used to enhance atomization by reducing droplet size, a novel approach has been introduced that utilizes plug flow to generate plugs resonating with an applied ultrasound frequency, triggering surface atomization. This study investigates the applicability of this method for microfluidic atomization and spray drying, particular for pharmaceutical carrier particles. The generated droplets exhibit a size of 7.24 μm and a PDI of 0.18, indicating a monodisperse distribution. The droplets are produced in discrete burst events, enabling an energy-efficient pulsed process with an applied power of less than 1 W. This approach successfully generates lipid nanoparticles with an average size of 140 nm, underscoring its potential for nanoparticle production.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 9","pages":" 2568-2574"},"PeriodicalIF":4.6,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11905916/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143649685","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Flexible nanoimprinted substrate integrating piezoelectric potential and photonic-plasmonic resonances† 集成压电电位和光子等离子共振的柔性纳米印迹衬底。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-05 DOI: 10.1039/D4NA00942H
Aeshah F. Alotaibi, Rongcheng Gan, Eni Kume, Dominik Duleba, Ahmed Alanazi, Allan Finlay, Robert P. Johnson and James H. Rice
{"title":"Flexible nanoimprinted substrate integrating piezoelectric potential and photonic-plasmonic resonances†","authors":"Aeshah F. Alotaibi, Rongcheng Gan, Eni Kume, Dominik Duleba, Ahmed Alanazi, Allan Finlay, Robert P. Johnson and James H. Rice","doi":"10.1039/D4NA00942H","DOIUrl":"10.1039/D4NA00942H","url":null,"abstract":"<p >Flexible substrates for sensing provide adaptable, lightweight, and highly sensitive platforms for detecting different substances. The flexibility of these substrates allows for seamless integration with complex shapes and dynamic surfaces, enabling monitoring in challenging conditions using methods such as surface-enhanced Raman spectroscopy (SERS). Here we outline a flexible metamaterial array sensor formed from plasmonic silver-coated nanoimprinted piezoelectric polyvinylidene fluoride film. We show that nanoscale array features can be prepared on the surface of the piezoelectric film using a facile nanoimprinting procedure. These nanoimprinted features act as polarization channels that enable plasmonic resonances, enhancing the SERS signal strength and improving reproducibility. We combine this effect with the inherent piezoelectric properties of polyvinylidene fluoride to further enhance the Raman signal strength upon mechanical deformation. Our results demonstrate a significant enhancement of the SERS signal when probed at a wavelength of 532 nm, achieving over an order of magnitude increase in signal strength for a range of analytes. This lightweight and flexible SERS substrate holds significant potential for applications in medical diagnostics, environmental monitoring, and trace detection, offering a highly sensitive and reproducible analytical platform.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 8","pages":" 2360-2367"},"PeriodicalIF":4.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11880835/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143573461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chiral induction in the crystallization of KIO3 and LiIO3: the role of amino acids in controlling the chirality of inorganic crystals† KIO3和LiIO3结晶中的手性诱导:氨基酸在控制无机晶体手性中的作用。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-05 DOI: 10.1039/D4NA01006J
Matan Oliel and Yitzhak Mastai
{"title":"Chiral induction in the crystallization of KIO3 and LiIO3: the role of amino acids in controlling the chirality of inorganic crystals†","authors":"Matan Oliel and Yitzhak Mastai","doi":"10.1039/D4NA01006J","DOIUrl":"10.1039/D4NA01006J","url":null,"abstract":"<p >Chiral induction in crystals has attracted significant attention due to its implications for developing chiral materials and understanding mechanisms of symmetry-breaking enantioselective crystallization of naturally occurring chiral minerals. Despite its potential use in chiral discrimination, this area remains largely unexplored. Here, we investigate chiral induction during crystallization of naturally occurring chiral KIO<small><sub>3</sub></small> and LiIO<small><sub>3</sub></small> minerals using arginine and alanine as chiral inducers. The chiral nature of the crystallization and the effect of the chiral inducers were examined using circular dichroism, polarimetry, and low-frequency Raman spectroscopy. The impact of chiral molecules on the rate and final crystal structure was studied by electron microscopy including SEM and TEM. We demonstrate that it is possible to control the chirality with chiral exogenous molecules, mainly amino acids. Understanding chiral induction in crystal growth may open avenues for controlled assembly of chiral materials and development of novel functional materials with unique properties.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 9","pages":" 2599-2607"},"PeriodicalIF":4.6,"publicationDate":"2025-03-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11912220/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in RNAi-based nanoformulations: revolutionizing crop protection and stress tolerance in agriculture 基于rnai的纳米配方的进展:革命性的作物保护和农业抗逆性。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-04 DOI: 10.1039/D5NA00044K
Shivangi Mathur, Ambika Chaturvedi and Rajiv Ranjan
{"title":"Advances in RNAi-based nanoformulations: revolutionizing crop protection and stress tolerance in agriculture","authors":"Shivangi Mathur, Ambika Chaturvedi and Rajiv Ranjan","doi":"10.1039/D5NA00044K","DOIUrl":"10.1039/D5NA00044K","url":null,"abstract":"<p >Nucleic acid-based therapeutics have the ability to tackle a wide range of diseases and stress tolerance that present significant obstacles for conventional approaches in agriculture. RNA-based medicines have become a promising approach, using nanoformulation treatments to specifically target certain diseases. Nanoformulations offer numerous benefits in comparison to alternative treatment methods, such as precise administration, minimal toxicity, and medication loading compatibility due to their bioactivity. There are a variety of nanoformulations available today, such as liposomes, polymeric nanoparticles (NPs), magnetic NPs, nanogels, and solid lipid nanoparticles (SLNs). RNA-based therapy employs intracellular gene nanoparticles containing messenger RNA (mRNA), which play an important role in stress management and pest as well as disease control. The adoption of mRNA-based technology paves the way for future technological progress. This review focuses on elucidating the process underlying the development of RNA interference (RNAi) and the diverse array of nanocarriers employed for the transportation of RNAi. Currently, this technique is being employed in the field of crop protection to combat diseases, pests, and environmental stress. The article highlights the benefits of RNAi mediated nanoformulations and discusses the significant obstacles that must be overcome to improve the viability of this technology for future applications.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1768-1783"},"PeriodicalIF":4.6,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11877354/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143567702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Mangrove pneumatophores as biocatalysts for the fabrication of silver nanoparticles and their potential applications against biofilm formation and hepatic carcinoma 红树林吸气孔作为制备纳米银的生物催化剂及其在生物膜形成和肝癌中的潜在应用。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-03-03 DOI: 10.1039/D4NA00722K
Debasis Nayak, Awdhesh Kumar Mishra, Kunal Biswas, Asmita Sen, Chandana Malakar, Jibanjyoti Panda, Neelam Amit Kungwani, Sarvesh Rustagi, Bibhu Prasad Panda and Yugal Kishore Mohanta
{"title":"Mangrove pneumatophores as biocatalysts for the fabrication of silver nanoparticles and their potential applications against biofilm formation and hepatic carcinoma","authors":"Debasis Nayak, Awdhesh Kumar Mishra, Kunal Biswas, Asmita Sen, Chandana Malakar, Jibanjyoti Panda, Neelam Amit Kungwani, Sarvesh Rustagi, Bibhu Prasad Panda and Yugal Kishore Mohanta","doi":"10.1039/D4NA00722K","DOIUrl":"10.1039/D4NA00722K","url":null,"abstract":"<p >The current study demonstrates the biogenic synthesis of silver nanoparticles using the pneumatophores of <em>Acanthus ilicifolius</em> (AiP-AgNPs), which is cost-effective and biocompatible. <em>A. ilicifolius</em> possesses remarkable features to endure the harshest conditions for its entire life cycle and generates secondary metabolites for its sustainability in hostile mangrove ecosystems. The presence of a prominent UV-visible absorption band at 420 nm supported the distinct color change inference for the synthesized AiP-AgNPs. The size of the synthesized AiP-AgNPs was determined to be ∼15 nm through field emission-scanning electron microscopy (FE-SEM), transmission electron microscopy (cryo-TEM), and atomic force microscopy (AFM). The presence of secondary metabolites such as 2-bromo-1,1-dichloroethene, hemin and <em>N</em>-(sulfanylacetyl)-<small>L</small>-seryl-<small>L</small>-argininamide was indicated by prominent peaks in liquid chromatography, suggesting their probable roles in the synthesis of AgNPs. The synthesized AiP-AgNPs demonstrated a distinct zone of inhibition against <em>Pseudomonas aeruginosa</em> (15.33 mm), <em>Vibrio cholerae</em> (9.83 mm), and <em>Bacillus subtilis</em> (12 mm). They also exhibited concentration-dependent antioxidant activity in DPPH, nitric oxide, and hydrogen peroxide scavenging assays. The anticancer potential of the synthesized AiP-AgNPs against HepG2 hepatocarcinoma cells determined through MTT colorimetric assay and flow cytometry revealed their dose-dependent cytotoxicity with the occurrence of the sub-G<small><sub>0</sub></small> phase (25.6%). Subsequent analysis using fluorescence microscopy, DNA damage, comet assay, and migration assay indicated that AiP-AgNPs hold significant potential and the ability to serve as a therapeutic candidate to pave the way for further in-depth investigations for pre-clinical and clinical research purposes.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 9","pages":" 2608-2625"},"PeriodicalIF":4.6,"publicationDate":"2025-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11912619/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Engineering a multivariate cobalt metal–organic framework for high photocatalytic activity: the impact of mixed ligands and metal incorporation in a visible light-driven heterogeneous photo-Fenton reaction for water treatment† 设计具有高光催化活性的多元钴金属有机框架:混合配体和金属掺入对水处理中可见光驱动的非均相光- fenton反应的影响。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-02-28 DOI: 10.1039/D4NA00954A
Noelia Rodríguez-Sánchez, Biswajit Bhattacharya, Franziska Emmerling, Carsten Prinz, Paula Prieto-Laria, A. Rabdel Ruiz-Salvador and Menta Ballesteros
{"title":"Engineering a multivariate cobalt metal–organic framework for high photocatalytic activity: the impact of mixed ligands and metal incorporation in a visible light-driven heterogeneous photo-Fenton reaction for water treatment†","authors":"Noelia Rodríguez-Sánchez, Biswajit Bhattacharya, Franziska Emmerling, Carsten Prinz, Paula Prieto-Laria, A. Rabdel Ruiz-Salvador and Menta Ballesteros","doi":"10.1039/D4NA00954A","DOIUrl":"10.1039/D4NA00954A","url":null,"abstract":"<p >Metal–organic frameworks (MOFs) have attracted increasing attention for the removal of organic pollutants in wastewater <em>via</em> photocatalysis. Here, we design a multivariate modification of ZIF-9 to tune its electronic properties for use in visible light photocatalysis. A controllable synthesis of ZIF-9 and its multivariate forms with the incorporation of copper and the 2-imidazolecarboxaldehyde (ica) ligand was carried out. The materials are tested for the removal of the model dye methylene blue (MB) by a heterogeneous photo-Fenton-like reaction at neutral pH and room temperature. Cu-ZIF-9-ica (UPO-3) shows high photocatalytic activity under both visible and ultraviolet A (UVA) light, achieving 94% MB degradation in 45 min, compared to 65% MB degradation in 120 min using bare ZIF-9. The study revealed a first-order rate constant of 0.0475 min<small><sup>−1</sup></small> for Cu-ZIF-9-ica compared to 0.0088 min<small><sup>−1</sup></small> for ZIF-9 under visible light. The improvement of the catalyst was clearly attributed to the co-incorporation of Cu and the ica ligand in the MOF, which reduces the band gap, in agreement with DFT calculations. Reproducibility and recyclability tests proved that Cu-ZIF-9-ica can be used for at least 3 cycles without a significant loss of efficiency, making it a promising material for the study and application of wastewater treatment.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 8","pages":" 2255-2265"},"PeriodicalIF":4.6,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11868913/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143542547","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel 3D Fe2O3@ZnBi2O4 n–p heterojunction with high photocatalytic activity under visible light 一种在可见光下具有高光催化活性的新型 3D Fe2O3@ZnBi2O4 n-p 异质结。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-02-28 DOI: 10.1039/D4NA01039F
Thi Viet Ha Luu, Van Cuong Nguyen, Thi Dieu Thuy Tran, Van Dat Doan, Thi Lieu Nguyen, Nguyen Xuan Dung and Huu Phuc Dang
{"title":"A novel 3D Fe2O3@ZnBi2O4 n–p heterojunction with high photocatalytic activity under visible light","authors":"Thi Viet Ha Luu, Van Cuong Nguyen, Thi Dieu Thuy Tran, Van Dat Doan, Thi Lieu Nguyen, Nguyen Xuan Dung and Huu Phuc Dang","doi":"10.1039/D4NA01039F","DOIUrl":"10.1039/D4NA01039F","url":null,"abstract":"<p >A novel n–p Fe<small><sub>2</sub></small>O<small><sub>3</sub></small>@ZnBi<small><sub>2</sub></small>O<small><sub>4</sub></small> (FZB) heterojunction with a unique 3D structure was fabricated in two simple steps to break down MB under visible light. First, the polymer gel combustion technique was employed to fabricate a 3D Fe<small><sub>2</sub></small>O<small><sub>3</sub></small> framework. Next, a microwave-assisted precipitation approach was used to incorporate 3D ZnBi<small><sub>2</sub></small>O<small><sub>4</sub></small> flakes onto the framework surface. FZB can effectively collect a broad range of UV-Vis light and sunlight. Surprisingly, the core–shell p–n heterojunction structure makes it easier for photogenerated charges to move and separate. This is because the semiconductor parts are better connected and the electric field is inside the two junctions. UV-Vis-DRS, EIS, PL, and XPS analyses confirmed this phenomenon. As a result, n–p FZB, with a Fe<small><sub>2</sub></small>O<small><sub>3</sub></small>/ZnBi<small><sub>2</sub></small>O<small><sub>4</sub></small> molar ratio of 2 : 1, showed the highest photocatalytic activity, increasing the reaction rate by 4.2 times compared to Fe<small><sub>2</sub></small>O<small><sub>3</sub></small> and 2.8 times compared to ZnBi<small><sub>2</sub></small>O<small><sub>4</sub></small>. Exposure to light for 100 min at a concentration of 0.7 g L<small><sup>−1</sup></small> the FZB catalyst and pH = 9 led to the breakdown of more than 95% of the 50 ppm MB solution. In addition, the photodegradation of MB by n–p FZB increased the reaction rate by 2.15 times by adding hydrogen peroxide (H<small><sub>2</sub></small>O<small><sub>2</sub></small>), which is known as the photo-Fenton reaction. The efficacy showed remarkable photocatalytic activity, which increased the reaction rate by 5.95 times when persulfate was used. Finally, after examination of the energy band structure of the materials and the findings regarding the function of the oxidizing sites in the photocatalytic process, a reaction mechanism was proposed.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 10","pages":" 2942-2954"},"PeriodicalIF":4.6,"publicationDate":"2025-02-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11959291/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143772684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","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 carbon nanodots on the cellular redox reaction and immune system 碳纳米点对细胞氧化还原反应和免疫系统的影响。
IF 4.6 3区 材料科学
Nanoscale Advances Pub Date : 2025-02-27 DOI: 10.1039/D4NA00860J
Surabhi Verma, Manini Bhatt and Bodhisatwa Das
{"title":"Effect of carbon nanodots on the cellular redox reaction and immune system","authors":"Surabhi Verma, Manini Bhatt and Bodhisatwa Das","doi":"10.1039/D4NA00860J","DOIUrl":"10.1039/D4NA00860J","url":null,"abstract":"<p >Carbon nanodots are ultra-small carbonaceous nanostructures with excellent photoluminescence and cytocompatibility properties, making them suitable for developing excellent bioimaging probes. They exhibit dual properties, generating and scavenging reactive oxygen species, and are used as photosensitizers to produce reactive oxygen species under light and as photothermal agents that transform light energy into heat. This makes it possible to use them in photothermal and photodynamic therapies to treat cancer. They may enter the body by various means, including inhalation, ingestion, or intravenous injection. Once inside, they travel through the bloodstream, infiltrating tissues where they come into contact with the immune system, similar to infectious agents. These nanodots are identified by several receptors on the surface of innate immune cells, such as monocytes and macrophages, which attempt to engulf these nanodots. This interaction can induce a pro-inflammatory (M1) or anti-inflammatory (M2) response, modulating immune activity. This review explores the immuno-toxic potential of carbon nanodots, focusing on their ability to modulate redox balance by catalase, glutathione peroxidase, and superoxide dismutase, which are examples of antioxidant enzymes. Although carbon nanodots have demonstrated a wide range of applications, their effect on the cellular immune system remains largely unexplored. In this study, we primarily addressed the sophisticated impacts of carbon nanodots on the immune system and their diverse processes, such as the many cellular redox reactions implicated in antibacterial and antiviral treatment, wound healing, drug administration, and tumor therapy. As a result, we outline the benefits and difficulties of carbon nanodots in the biomedical domain and discuss their potential in the future development of clinical medicine.</p>","PeriodicalId":18806,"journal":{"name":"Nanoscale Advances","volume":" 7","pages":" 1784-1802"},"PeriodicalIF":4.6,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11912505/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143657779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","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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