Nanoscale Horizons最新文献_第2页

Expression of concern: Carbon quantum dots as a dual platform for the inhibition and light-based destruction of collagen fibers: implications for the treatment of eye floaters.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-12-05 DOI: 10.1039/d4nh90078b

Alexandre Barras, Félix Sauvage, Inès de Hoon, Kevin Braeckmans, Dawei Hua, Gaëtan Buvat, Juan C Fraire, Christophe Lethien, J Sebag, Michael Harrington, Amar Abderrahmani, Rabah Boukherroub, Stefaan De Smedt, Sabine Szunerits

引用次数: 0

Tailoring catalysis at the atomic level: trends and breakthroughs in single atom catalysts for organic transformation reactions.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-12-05 DOI: 10.1039/d4nh00479e

Devendra Sharma, Devanshu Sajwan, Shubhankar Mishra, Ashrumochan Gouda, Prerna Mittal, Priyanka Choudhary, Bhagyashree Priyadarshini Mishra, Sahil Kumar, Venkata Krishnan

{"title":"Tailoring catalysis at the atomic level: trends and breakthroughs in single atom catalysts for organic transformation reactions.","authors":"Devendra Sharma, Devanshu Sajwan, Shubhankar Mishra, Ashrumochan Gouda, Prerna Mittal, Priyanka Choudhary, Bhagyashree Priyadarshini Mishra, Sahil Kumar, Venkata Krishnan","doi":"10.1039/d4nh00479e","DOIUrl":"10.1039/d4nh00479e","url":null,"abstract":"The utilization of precise materials in heterogeneous catalysis will provide various new possibilities for developing superior catalysts to tackle worldwide energy and environmental issues. In recent years, single atom catalysts (SACs) with excellent atom utilization and isolated active sites have progressed dramatically as a thriving sector of catalysis research. Additionally, SACs bridge the gap between homogeneous and heterogeneous catalysts and overcome the limitations of both categories. Current research on SACs is highly oriented towards the organic synthesis of high-significance molecules with promising potential for large-scale applicability and industrialization. In this context, this review aims to comprehensively analyze the state-of-the-art research in the synthesis of SACs and analyze their structural, electronic, and geometric properties. Moreover, the unprecedented catalytic performance of the SACs towards various organic transformation reactions is succinctly summarized with recent reports. Further, a detailed summary of the current state of the research field of SACs in organic transformation is discussed. Finally, a critical analysis of the existing challenges in this emerging field of SACs and the possible countermeasures are provided. We believe that SACs have the potential to profoundly alter the chemical industry, pushing the boundaries of catalysis in new and undiscovered territory.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142778944","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Peptide-based nanomaterials and their diverse applications.

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-12-04 DOI: 10.1039/d4nh00371c

Tarak Nath Das, Aparna Ramesh, Arghya Ghosh, Sourav Moyra, Tapas Kumar Maji, Goutam Ghosh

{"title":"Peptide-based nanomaterials and their diverse applications.","authors":"Tarak Nath Das, Aparna Ramesh, Arghya Ghosh, Sourav Moyra, Tapas Kumar Maji, Goutam Ghosh","doi":"10.1039/d4nh00371c","DOIUrl":"10.1039/d4nh00371c","url":null,"abstract":"The supramolecular self-assembly of peptides offers a promising avenue for both materials science and biological applications. Peptides have garnered significant attention in molecular self-assembly, forming diverse nanostructures with α-helix, β-sheet, and random coil conformations. These self-assembly processes are primarily driven by the amphiphilic nature of peptides and stabilized by non-covalent interactions, leading to complex nanoarchitectures responsive to environmental stimuli. While extensively studied in biomedical applications, including drug delivery and tissue engineering, their potential applications in the fields of piezoresponsive materials, conducting materials, catalysis and energy harvesting remain underexplored. This review comprehensively elucidates the diverse material characteristics and applications of self-assembled peptides. We discuss the multi-stimuli-responsiveness of peptide self-assemblies and their roles as energy harvesters, catalysts, liquid crystalline materials, glass materials and contributors to electrical conductivity. Additionally, we address the challenges and present future perspectives associated with peptide nanomaterials. This review aims to provide insights into the versatile applications of peptide self-assemblies while concisely summarizing their well-established biomedical roles that have previously been extensively reviewed by various research groups, including our group.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142764657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

XeF₂ gas assisted focused electron beam induced etching of niobium thin films: towards direct write editing of niobium superconducting devices. XeF2 气体辅助聚焦电子束诱导蚀刻铌薄膜：实现铌超导设备的直接写入编辑。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-22 DOI: 10.1039/d4nh00407h

Spencer Gellerup, Reece Emery, Scott T Retterer, Steven J Randolph, Philip D Rack

{"title":"XeF2 gas assisted focused electron beam induced etching of niobium thin films: towards direct write editing of niobium superconducting devices.","authors":"Spencer Gellerup, Reece Emery, Scott T Retterer, Steven J Randolph, Philip D Rack","doi":"10.1039/d4nh00407h","DOIUrl":"10.1039/d4nh00407h","url":null,"abstract":"In this work, we explore focused electron beam induced etching (FEBIE) of niobium thin films with the XeF2 precursor as a route to edit, on-the-fly, superconducting devices. We report the effect of XeF2 pressure, electron beam current, beam energy, and dwell time on the Nb etch rate. To understand the mass transport and reaction rate limiting mechanisms, we compare the relative electron and XeF2 gas flux and reveal the process is reaction rate limited at low current/short dwell times, but shifts to mass transport limited regimes as both are increased. The electron stimulated etching yield is surprisingly high, up to 3 Nb atoms/electron, and for the range studied has a maximum at 1 keV. It was revealed that spontaneous etching accompanies the electron stimulated process, which was confirmed by varying the etched box size. An optimized etch resolution of 17 nm was achieved. Given that the Nb superconducting coherence length is 38 nm and scales with thickness, this work opens the possibility to direct write Nb superconducting devices via low-damage FEBIE.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142685408","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Unraveling energetics and states of adsorbing oxygen species with MoS₂ for modulated work function. 用 MoS2 揭示吸附氧物种的能量和状态，实现调制功函数。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-20 DOI: 10.1039/d4nh00441h

Hejin Yan, Hongfei Chen, Xiangyue Cui, Qiye Guan, Bowen Wang, Yongqing Cai

{"title":"Unraveling energetics and states of adsorbing oxygen species with MoS2 for modulated work function.","authors":"Hejin Yan, Hongfei Chen, Xiangyue Cui, Qiye Guan, Bowen Wang, Yongqing Cai","doi":"10.1039/d4nh00441h","DOIUrl":"10.1039/d4nh00441h","url":null,"abstract":"MoS2 and related transition metal dichalcogenides (TMDs) have recently been reported as having extensive applications in nanoelectronics and catalysis because of their unique physical and chemical properties. However, one practical challenge for MoS2-based applications arises from the easiness of oxygen contamination, which is likely to degrade performance. To this end, understanding the states and related energetics of adsorbed oxygen is critical. Herein, we identify various states of oxygen species adsorbed on the MoS2 surface with first-principles calculations. We reveal a \"dissociative\" mechanism through which a physisorbed oxygen molecule trapped at a sulfur vacancy can split into two chemisorbed oxygen atoms, namely a top-anchoring oxygen and a substituting oxygen, both of which show no adsorbate induced states in the bandgap. The electron and hole masses show an asymmetric effect in response to oxygen species with the hole mass being more sensitive to oxygen content due to a strong hybridization of oxygen states in the valence band edge of MoS2. Alteration of oxygen content allows modulation of the work function up to 0.5 eV, enabling reduced Schottky barriers in MoS2/metal contact. These results show that oxygen doping on MoS2 is a promising method for sulfur vacancy healing, carrier mass controlling, contact resistance reduction, and anchoring of surface electron dopants. Our study suggests that tuning the chemical composition of oxygen is viable for modulating the electronic properties of MoS2 and likely other chalcogen-incorporated TMDs, which offers promise for new optoelectronic applications.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142674457","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

"Sweet MOFs": exploring the potential and restraints of integrating carbohydrates with metal-organic frameworks for biomedical applications. "甜味 MOFs"：探索将碳水化合物与金属有机框架整合用于生物医学应用的潜力和限制。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-19 DOI: 10.1039/d4nh00525b

Alessio Zuliani, Victor Ramos, Alberto Escudero, Noureddine Khiar

{"title":"\"Sweet MOFs\": exploring the potential and restraints of integrating carbohydrates with metal-organic frameworks for biomedical applications.","authors":"Alessio Zuliani, Victor Ramos, Alberto Escudero, Noureddine Khiar","doi":"10.1039/d4nh00525b","DOIUrl":"10.1039/d4nh00525b","url":null,"abstract":"The unique features of metal-organic frameworks (MOFs) such as biodegradability, reduced toxicity and high surface area offer the possibility of developing smart nanosystems for biomedical applications through the simultaneous functionalization of their structure with biologically relevant ligands and the loading of biologically active cargos, ranging from small drugs to large biomacromolecules, into their pores. Aiming to develop efficient, naturally inspired biocompatible systems, recent research has combined organic and materials chemistry to design innovative composites that exploit carbohydrate chemistry for the functionalization and structural modification of MOFs. Scientific investigation in the field has seen a significant rise in the past five years, and it is becoming crucial to acknowledge both the limits and benefits of this approach for future investigation. In this review, the latest research results merging carbohydrates and MOFs are discussed, with a particular emphasis on the advances in the field and the remaining challenges, including addressing sustainability and real-case applicability.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666656","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Rhodium nanospheres for ultraviolet and visible plasmonics. 用于紫外线和可见等离子体的铑纳米球。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-19 DOI: 10.1039/d4nh00449c

David Muñeton Arboleda, Vito Coviello, Arianna Palumbo, Roberto Pilot, Vincenzo Amendola

{"title":"Rhodium nanospheres for ultraviolet and visible plasmonics.","authors":"David Muñeton Arboleda, Vito Coviello, Arianna Palumbo, Roberto Pilot, Vincenzo Amendola","doi":"10.1039/d4nh00449c","DOIUrl":"10.1039/d4nh00449c","url":null,"abstract":"The development and understanding of alternative plasmonic materials are crucial steps for leveraging new plasmonic technologies. Although gold and silver nanostructures have been intensively studied, the promising plasmonic, chemical and physical attributes of rhodium remain poorly investigated. Here, we report the synthesis and plasmonic response of spherical Rh nanoparticles (NPs) with sizes in the 20-40 nm range. Due to the high cohesive energy of this metal, synthesis and experimental investigations of Rh nanospheres in this size range have not been reported; yet, it becomes possible here using a green and one-step laser ablation in liquid method. The localized surface plasmon (LSP) of Rh NPs falls in the ultraviolet spectral range (195-255 nm), but the absorption tail in the visible region increases significantly upon clustering of the nanospheres. The surface binding ability of Rh NPs towards thiolated molecules is equivalent to that of Au and Ag NPs, while their chemical and physical stability at high temperatures and in the presence of strong acids such as aqua regia is superior to those of Au and Ag NPs. The plasmonic features are well described by classical electrodynamics, and the results are comparable to Au and Ag NPs in terms of extinction cross-section and local field enhancement, although blue shifted. This allowed, for instance, their use as an optical nanosensor for the detection of ions of toxic metals in aqueous solution and for the surface enhanced Raman scattering of various compounds under blue light excitation. This study explores the prospects of Rh NPs in the realms of UV and visible plasmonics, while also envisaging a multitude of opportunities for other underexplored applications related to plasmon-enhanced catalysis and chiroplasmonics.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142666658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Edge-doped substituents as an emerging atomic-level strategy for enhancing M-N₄-C single-atom catalysts in electrocatalysis of the ORR, OER, and HER. 边缘掺杂取代基作为一种新兴的原子级策略，可增强 M-N4-C 单原子催化剂在 ORR、OER 和 HER 电催化中的作用。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-18 DOI: 10.1039/d4nh00424h

Liang Xie, Wei Zhou, Zhibin Qu, Yuming Huang, Longhao Li, Chaowei Yang, Junfeng Li, Xiaoxiao Meng, Fei Sun, Jihui Gao, Guangbo Zhao

{"title":"Edge-doped substituents as an emerging atomic-level strategy for enhancing M-N4-C single-atom catalysts in electrocatalysis of the ORR, OER, and HER.","authors":"Liang Xie, Wei Zhou, Zhibin Qu, Yuming Huang, Longhao Li, Chaowei Yang, Junfeng Li, Xiaoxiao Meng, Fei Sun, Jihui Gao, Guangbo Zhao","doi":"10.1039/d4nh00424h","DOIUrl":"10.1039/d4nh00424h","url":null,"abstract":"M-N4-C single-atom catalysts (MN4) have gained attention for their efficient use at the atomic level and adjustable properties in electrocatalytic reactions like the ORR, OER, and HER. Yet, understanding MN4's activity origin and enhancing its performance remains challenging. Edge-doped substituents profoundly affect MN4's activity, explored in this study by investigating their interaction with MN4 metal centers in ORR/OER/HER catalysis (Sub@MN4, Sub = B, N, O, S, CH3, NO2, NH2, OCH3, SO4; M = Fe, Co, Ni, Cu). The results show overpotential variations (0 V to 1.82 V) based on Sub and metal centers. S and SO4 groups optimize FeN4 for peak ORR activity (overpotential at 0.48 V) and reduce OER overpotentials for NiN4 (0.48 V and 0.44 V). N significantly reduces FeN4's HER overpotential (0.09 V). Correlation analysis highlights the metal center's key role, with ΔG*H and ΔG*OOH showing mutual predictability (R2 = 0.92). Eg proves a reliable predictor for Sub@CoN4 (ΔG*OOH/ΔG*H, R2 = 0.96 and 0.72). Machine learning with the KNN model aids catalyst performance prediction (R2 = 0.955 and 0.943 for ΔG*OOH/ΔG*H), emphasizing M-O/M-H and the d band center as crucial factors. This study elucidates edge-doped substituents' pivotal role in MN4 activity modulation, offering insights for electrocatalyst design and optimization.","PeriodicalId":93,"journal":{"name":"Nanoscale Horizons","volume":" ","pages":""},"PeriodicalIF":8.0,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142646133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"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

Nanoscale Horizons Emerging Investigator Series: Dr Mohammad Malakooti, University of Washington, USA. 纳米地平线新兴研究者系列：美国华盛顿大学 Mohammad Malakooti 博士。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-18 DOI: 10.1039/d4nh90077d

引用次数: 0

Emerging 2D materials hardware for in-sensor computing. 用于传感器内计算的新兴二维材料硬件。

IF 8 2区材料科学

Nanoscale Horizons Pub Date : 2024-11-18 DOI: 10.1039/d4nh00405a

Yufei Shi, Ngoc Thanh Duong, Kah-Wee Ang

引用次数: 0