Nanotechnology最新文献

筛选
英文 中文
Hydrothermally designed Ag-modified TiO2heterogeneous nanocatalysts for efficient hydrogen evolution by photo/electro/photoelectro-chemical water splitting.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-17 DOI: 10.1088/1361-6528/adbd48
Mohd Fazil, Norah Alhokbany, Syed Asim Ali, Tokeer Ahmad
{"title":"Hydrothermally designed Ag-modified TiO<sub>2</sub>heterogeneous nanocatalysts for efficient hydrogen evolution by photo/electro/photoelectro-chemical water splitting.","authors":"Mohd Fazil, Norah Alhokbany, Syed Asim Ali, Tokeer Ahmad","doi":"10.1088/1361-6528/adbd48","DOIUrl":"10.1088/1361-6528/adbd48","url":null,"abstract":"<p><p>One compelling goal of carbon-neutrality is to advance sustainable energy applications through advanced functional nanomaterials for achieving remarkable performance in energy conversion processes, especially in green H<sub>2</sub>energy. Here, Ag-modified TiO<sub>2</sub>nanostructures with highly specific exposed surface sites have been fabricated hydrothermally, elucidating its prominence towards photocatalytic, and photo/-electrocatalytic H<sub>2</sub>production. Further, the as-synthesized nanomaterials were investigated by XRD, electron microscopy (SEM/EDAX/TEM/HRTEM), ICP-MS, PL, Raman, UV-visible DRS, and BET surface area studies. The enhanced activity was established due to the exceptional optoelectronic properties and highly exposed active sites of the Ag-modified TiO<sub>2</sub>nanocatalysts. The photocatalytic activity of 2.5% Ag-doped TiO<sub>2</sub>photocatalyst demonstrated the highest hydrogen evolution, measuring 15.66 mmolgcat-1with 17.33% apparent quantum yield. Moreover, for photo-electrolysis, 1% and 2.5% Ag-doped TiO<sub>2</sub>nanocatalysts exhibited significantly improved activity with Tafel slopes of 162.49, 87.56 mV dec<sup>-1</sup>and onset potentials of 0.77 V (at 1.55 mA cm<sup>-2</sup>), -0.96 V (at 10 mA cm<sup>-2</sup>) for oxygen evolution reaction and hydrogen evolution reaction in alkaline and acidic conditions. Experiments indicated that incorporation of Ag ions in TiO<sub>2</sub>boosted the H<sub>2</sub>evolution due to the extraordinary surface properties and the presence of defect-sides /oxygen vacancies.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143573447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Antiferromagnetic skyrmion-based energy-efficient leaky integrate and fire neuron device.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-17 DOI: 10.1088/1361-6528/adb8c1
Namita Bindal, Md Mahadi Rajib, Ravish Kumar Raj, Jayasimha Atulasimha, Brajesh Kumar Kaushik
{"title":"Antiferromagnetic skyrmion-based energy-efficient leaky integrate and fire neuron device.","authors":"Namita Bindal, Md Mahadi Rajib, Ravish Kumar Raj, Jayasimha Atulasimha, Brajesh Kumar Kaushik","doi":"10.1088/1361-6528/adb8c1","DOIUrl":"10.1088/1361-6528/adb8c1","url":null,"abstract":"<p><p>The development of energy-efficient neuromorphic hardware using spintronic devices based on antiferromagnetic (AFM) skyrmion motion on nanotracks has gained considerable interest. Owing to their properties such as robustness against external magnetic fields, negligible stray fields, and zero net topological charge, AFM skyrmions follow straight trajectories that prevent their annihilation at nanoscale racetrack edges. This makes the AFM skyrmions a more favorable candidate than the ferromagnetic (FM) skyrmions for future spintronic applications. This work proposes an AFM skyrmion-based neuron device exhibiting the leaky-integrate-fire (LIF) functionality by exploiting either a thermal gradient or a perpendicular magnetic anisotropy (PMA) gradient in the nanotrack for leaky behavior by moving the skyrmion in the hotter region or the region with lower PMA, respectively, to minimize the system energy. Furthermore, it is shown that the AFM skyrmion couples efficiently to the soft FM layer of a magnetic tunnel junction, enabling efficient read-out of the skyrmion. The maximum change of 9.2% in tunnel magnetoresistance is estimated while detecting the AFM skyrmion. Moreover, the proposed neuron device has an energy dissipation of 4.32 fJ per LIF operation, thus paving the way for developing energy-efficient devices in AFM spintronics for neuromorphic computing.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468516","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Advances in spin properties of plant leaf-derived graphene quantum dots from materials to applications. 植物叶片衍生石墨烯量子点从材料到应用的自旋特性研究进展。
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-14 DOI: 10.1088/1361-6528/adb851
Yuan-Chih Hung, Jia-Ren Wu, Arun Prakash Periasamy, Nobuyuki Aoki, Chiashain Chuang
{"title":"Advances in spin properties of plant leaf-derived graphene quantum dots from materials to applications.","authors":"Yuan-Chih Hung, Jia-Ren Wu, Arun Prakash Periasamy, Nobuyuki Aoki, Chiashain Chuang","doi":"10.1088/1361-6528/adb851","DOIUrl":"10.1088/1361-6528/adb851","url":null,"abstract":"<p><p>Over the past decade, graphene quantum dots (GQDs) have gained an inexhaustible deal of attention due to their unique zero-dimensional (0D) and quantum confinement properties, which boosted their wide research implication and reliable applications. As one of the promising 0D member and rising star of the carbon family, plant leaf-derived GQDs have attracted significant attention from scholars working in different research fields. Owing to its novel photophysical properties including high photo-stability, plant leaf-derived GQDs have been increasingly utilized in the fabrication of optoelectronic devices. Their superior biocompatibility finds their use in biotechnology applications, while their fascinating spin and magnetic properties have maximized their utilization in spin-manipulation devices. In order to promote the applications of plant leaf-derived GQDs in different fields, several studies over the past decade have successfully utilized plant leaf as sustainable precursor and synthesized GQDs with various sizes using different chemical and physical methods. In this review, we summarize the Neem and Fenugreek leaves based methods of synthesis of plant leaf-derived GQDs, discussing their surface characteristics and photophysical properties. We highlight the size and wavelength dependent photoluminescence properties of plant leaf-derived GQDs towards their applications in optoelectronic devices such as white light-emitting diodes and photodetectors, as well as biotechnology applications such as<i>in vivo</i>imaging of apoptotic cells and spin related devices as magnetic storage medium. Finally, we particularly discuss possible ways of fine tuning the spin properties of plant leaf-derived GQD clusters by incorporation with superconducting quantum interference device, followed by utilization of atomic force microscopy and magnetic force microscopy measurements for the construction of future spin-based magnetic storage media and spin manipulation quantum devices so as to provide an outlook on the future spin applications of plant leaf-derived GQDs.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143468510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Boosted photocatalytic CO2reduction through interface engineering by constructing CdS-MnO2heterojunction. 通过界面工程构建 CdS-MnO2 异质结,提高光催化二氧化碳还原能力。
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-14 DOI: 10.1088/1361-6528/adbcb5
Wenqiang Jiang, Xin Zhang, Shijie Zhang, Hui Li, Xiaoying Liu, Honglei Zhang, Yunyi Xiao, Runze Bi, Siyuan Du, Yawei Gu
{"title":"Boosted photocatalytic CO<sub>2</sub>reduction through interface engineering by constructing CdS-MnO<sub>2</sub>heterojunction.","authors":"Wenqiang Jiang, Xin Zhang, Shijie Zhang, Hui Li, Xiaoying Liu, Honglei Zhang, Yunyi Xiao, Runze Bi, Siyuan Du, Yawei Gu","doi":"10.1088/1361-6528/adbcb5","DOIUrl":"10.1088/1361-6528/adbcb5","url":null,"abstract":"<p><p>To mitigate the levels of CO<sub>2</sub>in the atmosphere, photocatalytic conversion of CO<sub>2</sub>into hydrocarbons presents a viable approach. Herein, a CdS-MnO<sub>2</sub>composite synthesized through a facile electrostatic self-assembly method was employed as an effective catalyst for photocatalytic CO<sub>2</sub>reduction. The engineered CdS-MnO<sub>2</sub>minimized the recombination of photogenerated electrons and holes, thereby facilitating the charge transfer and boosting the catalytic activity of pristine CdS. The introduction of NaOH solution into the reaction environment further enhanced the interfacial electron transfer and increased the affinity to the key intermediate *CO, facilitating additional multielectron reactions for methanol production. The alkaline characteristics of NaOH solution not only promotes the adsorption and activation of inert CO<sub>2</sub>molecules, but also function as hole scavengers, significantly reducing the photogenerated carrier recombination and further promoting the CO<sub>2</sub>reduction, especially in multielectron reactions towards methanol. A notable yield of 13.4<i>μ</i>mol g<sup>-1</sup>h<sup>-1</sup>for methanol and 7.6<i>μ</i>mol g<sup>-1</sup>h<sup>-1</sup>for CO was obtained with the CdS-MnO<sub>2</sub>. The results obtained herein may provide insights into the design of a highly efficient photocatalytic systems aimed at converting CO<sub>2</sub>into higher value-added products.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143567764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A critical review on printed electronics and its application.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-13 DOI: 10.1088/1361-6528/adbcb4
Sritama Roy, Lakshmi Priya Ramakrishnan, Rangesh Vasudevan, Sridhar Chandrasekaran
{"title":"A critical review on printed electronics and its application.","authors":"Sritama Roy, Lakshmi Priya Ramakrishnan, Rangesh Vasudevan, Sridhar Chandrasekaran","doi":"10.1088/1361-6528/adbcb4","DOIUrl":"10.1088/1361-6528/adbcb4","url":null,"abstract":"<p><p>In light of the industry's environmental constraints, sustainable manufacturing technology has emerged as a critical goal for emerging applications. Due to the increased need for electronic production around the world, the requirement for environmentally safe technology is the necessity of this decade as the world government shifts towards sustainability in all manufacturing technology. Henceforth, printed electronics will be one such solution to regulate the electronic device and components production requirement of this decade. The article has discussed about the recent advances in inkjet-printed electronics across a wide range of electronics applications. We have discussed several inkjet printing inks and their formulation methods, which are required for minimizing environmental waste. In addition, we have discussed the future scope of printed electronics production and its impact on the economy as well as the environment.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143567762","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Recent advances in MXene catalyst towards enhanced hydrogen storage of Mg/MgH2: a review.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-11 DOI: 10.1088/1361-6528/adbb72
Zhaoqian Yan, Wenguang Zheng, Gongtao Hao, Yajuan Wei, Mengmeng Luo
{"title":"Recent advances in MXene catalyst towards enhanced hydrogen storage of Mg/MgH<sub>2</sub>: a review.","authors":"Zhaoqian Yan, Wenguang Zheng, Gongtao Hao, Yajuan Wei, Mengmeng Luo","doi":"10.1088/1361-6528/adbb72","DOIUrl":"10.1088/1361-6528/adbb72","url":null,"abstract":"<p><p>Hydrogen is regarded as an ideal substitute for fossil fuels on account of its advantages of high energy density, zero carbon emissions, and abundant reserves. Solid-state hydrogen storage is one of the most promising hydrogen storage methods in terms of high-volume storage density and safety. MgH<sub>2</sub>is a promising solid hydrogen storage material because of its high hydrogen storage capacity and favorable cycle reversibility. Nevertheless, its inferior thermodynamic and kinetic properties restrict its extensive application. Catalyst modification is considered to be an efficient way to enhance the thermodynamic and kinetic properties of hydrogenation and dehydrogenation for MgH<sub>2</sub>. This review summarizes the latest research progress on MXene-based composites, such as MAX, single metal MXene, bimetallic MXene, MXene/elemental metal, and MXene/transition metal compounds for promoting the hydrogen storage performances of MgH<sub>2</sub>. At the same time, the catalyst of MXene-based composites to optimize the hydrogenation/dehydrogenation kinetics, long cycle performance and catalytic mechanism of Mg/MgH<sub>2</sub>are discussed in detail.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527878","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of capping on the Dirac semimetal Cd3As2on Si grown via molecular beam epitaxy.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-10 DOI: 10.1088/1361-6528/adbb74
Wei-Chen Lin, Chiashain Chuang, Chun-Wei Kuo, Meng-Ting Wu, Jie-Ying Lee, Hsin-Hsuan Lee, Cheng-Hsueh Yang, Ji-Wei Ci, Tian-Shun Xie, Kenji Watanabe, Takashi Taniguchi, Nobuyuki Aoki, Jyh-Shyang Wang, Chi-Te Liang
{"title":"Effect of capping on the Dirac semimetal Cd<sub>3</sub>As<sub>2</sub>on Si grown via molecular beam epitaxy.","authors":"Wei-Chen Lin, Chiashain Chuang, Chun-Wei Kuo, Meng-Ting Wu, Jie-Ying Lee, Hsin-Hsuan Lee, Cheng-Hsueh Yang, Ji-Wei Ci, Tian-Shun Xie, Kenji Watanabe, Takashi Taniguchi, Nobuyuki Aoki, Jyh-Shyang Wang, Chi-Te Liang","doi":"10.1088/1361-6528/adbb74","DOIUrl":"10.1088/1361-6528/adbb74","url":null,"abstract":"<p><p>Given the promising applications of large magnetoresistance in the Dirac semimetal cadmium arsenide (Cd<sub>3</sub>As<sub>2</sub>), extensive research into Si-compatible Cd<sub>3</sub>As<sub>2</sub>devices is highly desirable. To prevent surface degradation and oxidation, the implementation of a protection layer on Cd<sub>3</sub>As<sub>2</sub>is imperative. In this study, two vastly different protecting layers were prepared on top of two Cd<sub>3</sub>As<sub>2</sub>samples. A zinc telluride layer was grown on top of one Cd<sub>3</sub>As<sub>2</sub>film, giving rise to a ten-fold increased mobility, compared to that of the pristine Cd<sub>3</sub>As<sub>2</sub>sample. Interestingly, unusual negative magnetoresistance is observed in the hexagonal boron nitride-capped Cd<sub>3</sub>As<sub>2</sub>device when a magnetic field is applied perpendicularly to the Cd<sub>3</sub>As<sub>2</sub>plane. This is in sharp contrast to the chiral anomaly that requires a magnetic field parallel to the Cd<sub>3</sub>As<sub>2</sub>plane. We suggest that a protection layer on molecular beam epitaxy-grown Cd<sub>3</sub>As<sub>2</sub>should be useful for realising its great device applications in magnetic sensing.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143527877","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Capacitance effects of nanopore chips on ionic current modulation and noise characteristics.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-10 DOI: 10.1088/1361-6528/adb6a5
Kabin Lin, Chen Chen, Dongxuan Li, Haoyong Li, Jinzhu Zhou
{"title":"Capacitance effects of nanopore chips on ionic current modulation and noise characteristics.","authors":"Kabin Lin, Chen Chen, Dongxuan Li, Haoyong Li, Jinzhu Zhou","doi":"10.1088/1361-6528/adb6a5","DOIUrl":"10.1088/1361-6528/adb6a5","url":null,"abstract":"<p><p>Solid-state nanopores exhibit adjustable pore size, robust chemical and thermal stability, and compatibility with semiconductor fabrication, positioning them as versatile platforms for nanofluidic applications and single-molecule detection. However, their higher noise levels compared to biological nanopores hinder their sensitivity in detecting biomolecules such as DNA and proteins. Enhancing detection sensitivity requires an in-depth understanding of noise sources and strategies for noise reduction. Here, we construct an equivalent circuit model of solid-state nanopores and conduct corresponding experiments to evaluate how chip capacitance, salt concentration, applied voltage, and pore size influence ionic current noise. We find that chip capacitance is the dominant factor affecting ionic current noise, with minimal noise sensitivity to salt concentration below 0.1 M but pronounced increases above this threshold. The pH has little impact on noise, whereas higher applied voltages elevate noise at high salt concentrations. Introducing a SiO<sub>2</sub>layer between SiN<i><sub>x</sub></i>and Si significantly reduces chip capacitance; a 1000 nm SiO<sub>2</sub>layer reduces capacitance to 7.9 pF, decreasing ionic current noise to 18.7 pA for a 2.2 nm nanopore in 1 M KCl at 40<i>μ</i>m membrane side length and 100 mV and 10 kHz sampling. This reduction in capacitance improves response time and measurement accuracy, marking a critical advancement for high-sensitivity applications of solid-state nanopores.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143441234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diamond nanoneedles for biosensing.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-06 DOI: 10.1088/1361-6528/adb8f4
Mariam Quarshie, Lena Golubewa, Caterina Giraulo, Silvana Morello, Claudia Cirillo, Maria Sarno, Bo Xu, Priyadharshini Balasubramanian, Yuliya Mindarava, Marijonas Tutkus, Alexander Obraztsov, Fedor Jelezko, Polina Kuzhir, Sergei Malykhin
{"title":"Diamond nanoneedles for biosensing.","authors":"Mariam Quarshie, Lena Golubewa, Caterina Giraulo, Silvana Morello, Claudia Cirillo, Maria Sarno, Bo Xu, Priyadharshini Balasubramanian, Yuliya Mindarava, Marijonas Tutkus, Alexander Obraztsov, Fedor Jelezko, Polina Kuzhir, Sergei Malykhin","doi":"10.1088/1361-6528/adb8f4","DOIUrl":"10.1088/1361-6528/adb8f4","url":null,"abstract":"<p><p>Nanoparticles and nanomaterials are revolutionizing medicine by offering diverse tools for diagnosis and therapy, including devices, contrast agents, drug delivery systems, adjuvants, therapeutics, and theragnostic agents. Realizing full applied potential requires a deep understanding of the interactions of nano dimensional objects with biological cells. In this study, we investigate interaction of single-crystal diamond nanoneedles (SCDNNs) containing silicon vacancy (SiV<sup>-</sup>) color centers with biological substances. Four batches of the diamond needles with sizes ranging between 200 nm and 1300 nm and their water suspensions were used in these studies. The human lung fibroblast cells were used for the proof-of-concept demonstration. Employing micro-photoluminescence (PL) mapping, confocal microscopy, and lactate dehydrogenase (LDH) viability tests, we evaluated the cellular response to the SCDNNs. Intriguingly, our investigation with PL spectroscopy revealed that the cells and SCDNNs can coexist together with approved efficient registration of SiV<sup>-</sup>centers presence. Notably, LDH release remained minimal in cells exposed to optimally sized SCDNNs, suggesting a small number of lysed cells, and indicating non-cytotoxicity in concentrations of 2-32<i>µ</i>g ml<sup>-1</sup>. The evidence obtained highlights the potential of SCDNNs for extra- or/and intracellular drug delivery when the surface of the needle is modified. In addition, fluorescent defects in the SCDNNs can be used for bioimaging as well as optical and quantum sensing.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143472598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The SiP nanotubes as potential metal-free photocatalyst: a density functional theory study.
IF 2.9 4区 材料科学
Nanotechnology Pub Date : 2025-03-06 DOI: 10.1088/1361-6528/adb9ee
Chao Wang, Xuan Hui, Yingtao Zhu, Huanyu Zhao, Weijun Cao
{"title":"The SiP nanotubes as potential metal-free photocatalyst: a density functional theory study.","authors":"Chao Wang, Xuan Hui, Yingtao Zhu, Huanyu Zhao, Weijun Cao","doi":"10.1088/1361-6528/adb9ee","DOIUrl":"10.1088/1361-6528/adb9ee","url":null,"abstract":"<p><p>Hydrogen generation via photocatalytic water splitting holds significant potential as a strategy to tackle energy crises and environmental degradation. We investigated the electronic and photocatalytic properties of silicon phosphide (SiP) single-walled nanotubes as potential photocatalysts employing HSE06 hybrid density functional along with all-electron Gaussian basis sets. Relative to the monolayer, the band gap of nanotube is reduced (e.g. 1.99 eV for (55, 0)), and the nature of electron transfer in nanotube changes to direct which can extend the visible light absorption range. Moreover, the hydrogen production rate for SiP (55, 0) nanotube increases from 9.97% to 12.41%. Calculations of the band edge positions under various pH conditions indicate that nanotubes exhibit strong reduction capabilities. Within the pH value between 0 and 7 nanotubes with a radius exceeding 40 Å can split water into H<sub>2</sub>and O<sub>2</sub>simultaneously under sunlight irradiation. Applying tensile and compressible strain can effectively enhance the oxidation ability for overall water splitting due to downward valance band edge. Furthermore, the difference in mobility between the (50, 0) nanotube electrons (140.68 cm<sup>2</sup>v<sup>-1</sup>s<sup>-1</sup>) and hole (4.26 cm<sup>2</sup>v<sup>-1</sup>s<sup>-1</sup>) suggests that electron-hole recombination can be mitigated. Based on the above findings, we hypothesize that SiP nanotubes should be a potential metal-free photocatalyst.</p>","PeriodicalId":19035,"journal":{"name":"Nanotechnology","volume":" ","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-03-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143502681","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信