Nano-Structures & Nano-Objects最新文献

{"title":"Biomedical applications of terbium oxide nanoparticles by Couroupita guianensis aubl leaves extract: A greener approach","authors":"P. Senthil Pandi ,&nbsp;P. Krishnan ,&nbsp;S. Sathish ,&nbsp;S. Sudhahar","doi":"10.1016/j.nanoso.2024.101341","DOIUrl":"10.1016/j.nanoso.2024.101341","url":null,"abstract":"<div><div>Couroupita guianensis aubl (CGA) is a plant known for its therapeutic characteristics and extensively used in biomedicine. This paper presents a method for synthesizing terbium oxide (Tb₂O₃) nanoparticles (NPs) utilizing the leaves extract of CGA which is sustainable and environmentally friendly. The practical synthesis of Tb₂O₃ NPs was validated using UV–vis analysis, revealing a prominent peak at 246 nm and the calculated band gap value of 3.02 eV. The existence of numerous functional groups and molecular bonding interactions in the Tb₂O₃ NPs was confirmed using FTIR spectrum analysis. In addition, the XRD examination confirmed that the nanoparticles had a crystalline structure with dimensions of 27.3 nm. The TEM imaging revealed the particle size of around 5.63 nm. The manufactured Tb₂O₃ NPs were analysed for anticancer capabilities against human MCF-7 cancer cell lines. Overall, our study emphasizes the ability of green-produced Tb₂O₃ NPs to be versatile agents with antidiabetic, antioxidant, and anticancer effects. These nanoparticles are potentially used in biomedical applications, providing long-lasting solutions to various health-related problems.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101341"},"PeriodicalIF":5.45,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142320065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oxalic acid capped tungsten oxide nanozyme mimicking peroxidase activity, its synthesis characterization, and kinetic data validation via spectrophotometric studies","authors":"Ravishankar H. Sadashivanna ,&nbsp;Honnur Krishna ,&nbsp;Anantharaman Shivakumar ,&nbsp;Nikhil Y. Gangadhara ,&nbsp;K.S. Mahesh Lohith ,&nbsp;Avinash Krishnegowda","doi":"10.1016/j.nanoso.2024.101340","DOIUrl":"10.1016/j.nanoso.2024.101340","url":null,"abstract":"<div><div>The need for parody enzymes has attracted the interest of researchers globally. Nanomaterials have provided promising results as mimic catalysts termed nanozymes (NZMs). This article briefs the peroxidase mimicking behavior of Oxalic acid-capped WO₃ nanoparticles (Ox-WO₃ NPs), which were hydrothermally synthesized. The peroxidase parodying behavior of the synthesized NZMs was studied for H₂O₂ as substrate and PPDD-NEDA and TMB as a chromogenic reagent in Phosphate buffer at pH 6.5. The coupled product of PPDD-NEDA showed λ_max=480 nm, and the method was linear between 0.2413 and 1.93 mM. The oxidized product of TMB λ_max=650 nm was linear in the range of 0.1938–1.9386 mM. K_m values corresponding to TMB, and PPDD-NEDA were 0.5308 and 0.3957 mM. Kinetic constants with respect to PPDD-NEDA i.e., V_max, K_cat, K_eff, and K_pow were found to be 0.1913 mM/min, 3.3639 min⁻¹, 8.4999 mM⁻¹ min⁻¹, and 0.4833 min⁻¹. The precision study for intra-day (1.27–2.49 %) and inter-day (1.09–1.52 %) has been calculated. LOD and LOQ of the reaction was found to be 56.34 and 170.73 µM respectively. Characterization of synthesized NPs were carried out with respect to morphology, crystallinity, size, zeta potential and others. The XRD of the sample revealed the crystallite size to be 42.6 nm (Williamson-Hall equation) and 35 nm (Scherrer equation), Crystal structure was identified to be a mixture of monoclinic and orthorhombic as compared with the JCPDS file and the crystallinity of the sample was found to be 79.75 %. The SEM images provided the morphology to be spherical in nature with more aggregation due to lower zeta potential value as recorded by the DLS. The elemental composition by EDS recorded the formation of WO₃ NPs. The broad peak of FT-IR spectra between 2900 and 3900 cm⁻¹ confirms the capping of oxalic acid to WO₃ NPs.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101340"},"PeriodicalIF":5.45,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142320066","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Laser-induced graphene in energy storage- batteries","authors":"Farzane Hasheminia ,&nbsp;Sadegh Sadeghzadeh","doi":"10.1016/j.nanoso.2024.101347","DOIUrl":"10.1016/j.nanoso.2024.101347","url":null,"abstract":"<div><div>Laser-induced graphene (LIG) offers a promising avenue for creating graphene electrodes for battery uses. This review article discusses the implementation of LIG for energy storage purposes, especially batteries. Since 1991, lithium-ion batteries have been a research subject for energy storage uses in electronics. The uneven distribution of lithium resources and rising costs hamper lithium-based battery growth. Multivalent ion batteries, or MIBs, have gained significant traction as an alternative for large-scale energy storage. Earth's crust is mainly composed of polyvalent ions, such as calcium (Ca2+), magnesium (Mg2+), aluminum (Al3+), zinc (Zn2+), etc. As a result, a lot of research has been done on lithium-ion batteries (LIBs), sodium-ion batteries (SIBs), lithium metal batteries (LMBs), zinc blue ion batteries (ZIBs), etc. Graphite anode is more useful in these batteries due to its high theoretical capacity of 372 mAh g⁻¹ and proper stability. Recent technological breakthroughs have driven the emergence of graphene-based anodes. Graphene, a single-layer sheet of carbon atoms, offers a large surface area and can serve as a platform adaptable to many needs. There are multiple methods to produce graphene, and the League method stands out with its simplicity, effectiveness, and low cost, making it ideal for diverse applications. It also enables the creation of graphene with tunable properties. In addition, it is a green method and can reduce concerns regarding the increasing production of electronic waste. Green LIG is produced from cellulose materials such as paper and wood, which are environmentally friendly raw materials. Next, it discusses LIG's production process and the laser's critical parameters for graphene fabrication and functionalization. Following this, we delve into recent and promising research in battery research, developed using laser processing techniques, with a particular focus on battery applications. The review concludes by discussing laser technology's main challenges and Potential applications for graphene in energy device manufacturing. One of the main challenges of LIG is that it is difficult to produce thick films. Another challenge is that LIG has high resistance, which can cause ohmic loss in electronic applications. Researchers are currently working on ways to reduce the resistance of LIG without sacrificing its other useful features. Also, this factor can affect its stability and cause aging. Despite these challenges, LIG has the potential to revolutionize the way graphene electrodes are produced, sparking excitement and optimism about the outlook for energy storage solutions. LIG offers a simple, cost-effective approach to producing graphene electrodes with customizable properties, making it a promising candidate to revolutionize the field.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101347"},"PeriodicalIF":5.45,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142314128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Upgraded theragnostic strategies of multivariate nano gold in the management of hepatocellular carcinoma","authors":"Debojyoti Halder ,&nbsp;Ashutosh Gupta ,&nbsp;Subhasis Chakraborty ,&nbsp;Partha Roy ,&nbsp;Kalyan Kumar Sen","doi":"10.1016/j.nanoso.2024.101342","DOIUrl":"10.1016/j.nanoso.2024.101342","url":null,"abstract":"<div><div>Hepatocellular Carcinoma is one of the detrimental forms of liver cancer perceived to be the fourth most dangerous disease on a global forum. The prevalence of HCC is increasing day by day &amp; complicated health status. Presently, there are different treatment strategies for overcoming HCC. But none of them are stable enough to overcome this permanently. The failure of treatment has abundant reasons, such as inadequate pharmacokinetics and pharmacodynamics features of existing treatment, low drug targeting, drug resistance, and so on. Therefore, researchers have investigated various nano-structured gold to diagnose and treat HCC. Concerning this concept, gold nanoparticles (AuNPs) have shown tremendous potential in synergizing chemotherapy and have unique intrinsic theragnostic properties. These nano-golds enhance the retention of the therapeutics in the tumor cells due to the enhanced permeability and retention (EPR) effect. The EPR effect can increase the permeability effect through different membranes, and thereby, the nano-gold can strike the specific area successfully. In the field of biomedicine, particularly in drug delivery, molecular imaging, and cancer treatment, nano-structured golds are extensively utilized. This evidence indicates that AuNPs decrease the proliferation of cancer cells and ultimately reduce the chances of cancer metastasis. This review will further focus on the theragnostic applications of gold nanoparticles, including their synthesis and applications to mitigate HCC and other malignancies. The limitations associated with these nano-golds are also highlighted in this review.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101342"},"PeriodicalIF":5.45,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142314210","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Harnessing nanotechnology for breast cancer management: UiO-66 (NH2) metal-organic frameworks functionalized with chitosan and folic acid for the efficient delivery of doxorubicin","authors":"Soji Soman ,&nbsp;Sanjay Kulkarni ,&nbsp;P. Vineeth ,&nbsp;Sajan D George ,&nbsp;Srinivas Mutalik","doi":"10.1016/j.nanoso.2024.101360","DOIUrl":"10.1016/j.nanoso.2024.101360","url":null,"abstract":"<div><div>Cancer is a leading cause of morbidity globally, which could be due to a lack of effective treatments. The inherent inadequacies of traditional medicines in terms of tumour selectivity and undesired toxicity urge us to seek alternative therapies to address these drawbacks. Metal<img>organic frameworks (MOFs) have been synthesized for use in drug delivery systems (DDS) because of their improved porosity and larger specific surface area. In this research, UiO-66-NH₂ MOFs were synthesized via a solvothermal technique and functionalized with chitosan-folic acid (CS-FA) as a DDS for targeted doxorubicin (DOX) delivery. The MOF nanoplatforms were characterized via different techniques, including FTIR, PXRD, BET, TEM, DLS, TGA, SEM, and TGA. Remarkably, compared with the unmodified MOF, UiO-DOX@CS-FA delayed DOX release due to a gated effect induced by the CS-FA surface coating. pH-sensitive DOX release was observed, where 39.76 % of the drug was released in the tumour-mimicking pH of 5.2, whereas 5.84 % of the drug was released at physiological pH (7.4). In vitro cellular toxicity and uptake investigations demonstrated that UiO-DOX@CS-FA is a highly effective targeted DDS against MCF-7 breast cancer cells. Furthermore, in vivo toxicity studies in Wistar rats revealed no evidence of serious adverse effects. The variety of pharmacokinetic characteristics tested indicated that the bioavailability and release kinetics of DOX improved. Our findings lay the groundwork for the development and production of novel polymer conjugate-based nanoparticles with increased tumour-targeting efficacy.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101360"},"PeriodicalIF":5.45,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2352507X24002725/pdfft?md5=d90e6553f76e9c4f990837fd122c6c59&pid=1-s2.0-S2352507X24002725-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142314209","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}

{"title":"Investigations on electrical and sensing behaviors of Fe doped ZnO nanoparticles","authors":"V.R. Rathod ,&nbsp;Mukesh Tiwari ,&nbsp;Mehul Parmar ,&nbsp;Himitri Trivedi ,&nbsp;Apexa Maru ,&nbsp;N.A. Chondagar ,&nbsp;Rujuta Lehru ,&nbsp;Jaydeep Radhanpura ,&nbsp;V.S. Vadgama ,&nbsp;Himanshu Dadhich ,&nbsp;R.J. Gohel ,&nbsp;Puneet Negi ,&nbsp;P.P. Bardapurkar ,&nbsp;N.P. Barde ,&nbsp;M.J. Keshvani ,&nbsp;Y.N. Jani ,&nbsp;N.A. Shah ,&nbsp;P.S. Solanki","doi":"10.1016/j.nanoso.2024.101356","DOIUrl":"10.1016/j.nanoso.2024.101356","url":null,"abstract":"<div><div>Zn_1–xFe_xO (ZnFeO; x = 0.10, 0.15 and 0.20) nanoparticles were prepared by using modified sol–gel method by employing acetate precursor route. Structural and microstructural aspects strongly suggest the presence of dual crystalline phases, namely, ZnFeO and ZnFe₂O₄ fractions where crystallite size of ZnFeO gets suppressed from ∼ 41.71 nm to ∼ 36.85 nm and crystallite size of ZnFe₂O₄ gets enhanced from ∼ 13.22 nm to ∼ 1715 nm with Fe content within ZnFeO nanoparticles. In the present extended investigations, ac conductivity, impedance and dielectric loss have been understood with their dependence on temperature, magnetic field and Fe content within ZnFeO nanoparticles. Role of crystallite size, crystallite boundary density and ZnFe₂O₄ phase fraction has been considered to recognize electrical behaviors. Various models and mechanisms including Jonscher’s power law and universal dielectric response (UDR) have been employed to understand the dipole relaxation processes and charge conduction mechanisms. Temperature dependent dc resistivity has been understood on the basis of next nearest hopping mechanism (NNHM) of conduction. Activation energy, derived through the fitting of NNHM to recorded resistivity data, is found to decrease from 16.22 meV to 9.06 meV with increase in Fe content within ZnFeO nanoparticles. Acetone gas sensing capability of all studied ZnFeO nanoparticles has been investigated at room temperature on the basis of crystallite and grain sizes and boundary density. Gas sensing behaviors clearly indicates that the doping of Fe at Zn site in ZnFeO nanoparticle lattice enhances the acetone gas (in 400 ppm at 300 K) sensing response from 20.73 % to 91.13 %. Also, with increase in Fe content in ZnFeO lattice, gas sensing (for 400 ppm at 300 K) response time gets suppressed from 60 s to 15 s and recovery time gets reduced from 100 s to 35 s which has been ascribed to the reduced grain size and improved grain boundary density.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101356"},"PeriodicalIF":5.45,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis of semiconductor properties of fabricated graphene materials","authors":"Rajib Nandee ,&nbsp;Mohammad Asaduzzaman Chowdhury ,&nbsp;Md. Masud Rana ,&nbsp;Nayem Hossain ,&nbsp;Md. Aminul Islam ,&nbsp;Hasanuzzaman Aoyon","doi":"10.1016/j.nanoso.2024.101354","DOIUrl":"10.1016/j.nanoso.2024.101354","url":null,"abstract":"<div><div>Introducing dopant elements into graphene is a crucial process for creating bandgaps, which will have significant importance in developing nanoelectronic devices in the future. In this study, we provide an analysis of the electrical and carrier mobility properties of graphene doped with BN in ratios of 1 %, 3 %, and 5 %, graphene 95 %, ZnO-3 %, and BN2 %, graphene-95 %, Al₂O₃-3 % and BN-2 %, graphene-95 %, TiO₂-3 % and BN-2 % by using a sintering process. Upon analyzing the band structure, it was determined that the mentioned materials demonstrate a bandgap in graphene. The resistivity values for fabricated graphene materials doped with different nanoparticles are estimated using the Source-meter Unit (SMU) at room temperature (25°C), 100°C and 200°C. The conductivity of graphene is 8.93E+07 Ω⁻¹cm⁻¹ and reduced gradually with the doping percentages. The resistivity of graphene is measured at 1.12 E-08 Ω.cmand increases with the doping percentages, and carrier mobility is measured to be 9239 cm²V⁻¹s⁻¹ and gradually reduced with the doping percentages. The temperature-dependent conductivity is determined using electrical conductivity under the constant relaxation time approximation.</div></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101354"},"PeriodicalIF":5.45,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142311975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Dual-mode sensing with L-phenylalanine-stabilized copper nanoparticles: Real-time detection of Fe3+ and pH monitoring","authors":"Ramakrishnan AbhijnaKrishna ,&nbsp;M. Yuvarani ,&nbsp;Shu-Pao Wu ,&nbsp;Sivan Velmathi","doi":"10.1016/j.nanoso.2024.101357","DOIUrl":"10.1016/j.nanoso.2024.101357","url":null,"abstract":"<div><p>Water-soluble copper nanoparticles stabilized with L-Phenylalanine (L-PCuNPs) were synthesized and characterized for dual sensing of Fe³⁺ ions and pH levels. These nanoparticles exhibited green fluorescence at 486 nm, which was quenched by Fe³⁺ ions, resulting in a color shift from colorless to yellow. Additionally, L-PCuNPs showed pH responsiveness, with increased fluorescence intensity as the pH shifted from acidic to basic. Their effectiveness was further validated through analysis of environmental, biological, and food samples, demonstrating their practical utility across diverse real-world applications.</p></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101357"},"PeriodicalIF":5.45,"publicationDate":"2024-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272690","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Modeling acoustic characteristics of artificial bone alloys for medical and surgical use under thermodynamic conditions","authors":"Yahya Al-Sayaad ,&nbsp;Radman Alnahari ,&nbsp;Linda Achou ,&nbsp;Muhammad Nadeem ,&nbsp;Ali Saad Alwesabi ,&nbsp;Abdellaziz Doghmane","doi":"10.1016/j.nanoso.2024.101343","DOIUrl":"10.1016/j.nanoso.2024.101343","url":null,"abstract":"<div><p>The study examines the impact of porosity on mechanical, acoustic, and behavioral properties of (Ti-6Al-4 V alloy) alloys, which are manufactured to mimic human bones. It investigates how porosity, controlled through factors like pressure, particle size, and temperature during sintering, affects properties such as modulus of elasticity, surface acoustic wave (SAW) velocities, hardness coefficients, and acoustic resistance.</p><p>The findings suggest that different levels of porosity at varying sintering temperatures significantly alter the dynamic elastic modulus of the alloys. Specifically, increasing porosity values seem to correlate with a decrease in elastic constants, elastic modulus values, and surface acoustic wave types. This phenomenon may be attributed to the transitional crystalline structure phases of Ti6Al4V alloy and the manufacturing process.</p><p>Remarkably, the study concludes that these (Ti-6Al-4 V alloy) alloys exhibit superior porosity, mechanical, and acoustic qualities compared to various types of human bone, including cortical, trabecular, and cancellous bone.</p></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101343"},"PeriodicalIF":5.45,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272156","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Synthesis and application of biomass-based graphene oxide using microwave-assisted pyrolysis method","authors":"Scarlett Allende ,&nbsp;Yang Liu ,&nbsp;Muhammad Adeel Zafar ,&nbsp;Mohan V. Jacob","doi":"10.1016/j.nanoso.2024.101338","DOIUrl":"10.1016/j.nanoso.2024.101338","url":null,"abstract":"<div><p>Graphene and related materials have excellent potential to revolutionise many emerging fields, but the large quantity synthesis using environmentally sustainable methods is still challenging. This work studies the synthesis of graphene oxide from food waste biochar with negatively charged properties, which is initially produced using microwave pyrolysis. The synthesised graphene oxide achieved 64.53 % carbon content, 345.79 m²/g surface area, 0.074 cm³/g micropore volume, large reactive surface area, and ribbon/banded organisation. The performance of carbon-based material is evaluated in the fabrication of a modified screen-printed carbon electrode (SPCE) for selective dopamine (DA) detection in the coexistence of ascorbic acid (AA) and uric acid (UA). The electrostatic interactions between the negatively charged biochar-based graphene oxide (BBGO) on the surface SPCE and opposite-charged dopamine assisted the oxidation potential with interfering species by electrostatic repulsion of AA and UA. This manuscript substantiates the resource recovery from organic materials and sustainable graphene oxide synthesis, underscoring their application in detecting positively charged species.</p></div>","PeriodicalId":397,"journal":{"name":"Nano-Structures & Nano-Objects","volume":"40 ","pages":"Article 101338"},"PeriodicalIF":5.45,"publicationDate":"2024-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142272689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}