Article
Optics
Xiao Luo, Weijian Liu, Changhao Chen, Guochen Jiang, Xinyu Hu, Hongjun Zhang, Minlin Zhong
Summary: This study presents a high sensitivity and high uniformity SERS substrate prepared by femtosecond laser ablation in Argon, which shows potential for detecting common food additives.
OPTICS AND LASER TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Yuwei Qu, Zhichao Song, Jun Zhang
Summary: Highly sensitive and long-term stable ethanol gas sensors based on 3D urchin-like ZnO micro/nanospheres are synthesized. The sensors exhibit a high sensitivity of 15.0, fast response and recovery times of 14 seconds and 7 seconds respectively when detecting 200 ppm ethanol gas at 280 degrees C. After 450 days of storage, the sensors still maintain a sensitivity of 5.9 towards 200 ppm ethanol gas at the same operating temperature.
Article
Biophysics
Lang Li, Zhuyuan Wang, Yang Lu, Kai Zhu, Shenfei Zong, Yiping Cui
Summary: The DaSON strategy utilizes DNA-assisted synthesis of ortho-nanodimer to fabricate Ag (Au) nanodimers with controllable gap width, demonstrating extraordinary reproducibility and enhancement effects in SERS sensing applications.
BIOSENSORS & BIOELECTRONICS
(2021)
Article
Chemistry, Physical
L. Mikac, I. Rigo, L. Himics, A. Tolic, M. Ivanda, M. Veres
Summary: Detection of microplastics remains challenging due to limitations in current methods, instrumentation, and particle size. In this study, surface-enhanced Raman spectroscopy (SERS) was used to successfully detect polystyrene (PS) and polyethylene (PE) particles in pure water. By synthesizing gold nanoparticles (Au NPs) of different sizes, and optimizing the conditions, efficient and stable SERS signals were observed on PS particles.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Matin Ashurov, Bakhodur Abdusatorov, Alexander Baranchikov, Sergey Klimonsky
Summary: A substrate design for surface-enhanced Raman scattering was presented by decorating three-dimensional inverse photonic crystals with a small amount of Au nanoparticles. The enhancement factor of the Raman signal was found to strongly depend on the spectral position of the photonic stop band, reaching a maximum value of about 1-2 x 10^5 when it coincides with the laser wavelength, with a detection limit for methylene blue of around 10^(-7) M.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2021)
Article
Nanoscience & Nanotechnology
Chao Zhang, Zhaoxiang Li, Si Qiu, Weixi Lu, Mingrui Shao, Chang Ji, Guangcan Wang, Xiaofei Zhao, Jing Yu, Zhen Li
Summary: Regulation of hot spots using hat-shaped hierarchical nanostructures shows promising potential in various applications, including SERS and plasmon-driven catalysis. The constructed platform, with narrow gaps produced by MoS2 films and curvature of space, exhibits superior SERS capability and achieves ultrasensitive detection, as well as real-time monitoring of catalytic conversion.
Article
Polymer Science
Xingdong Chen, Wei Lan, Wei Dou
Summary: A polystyrene nanospheres coated red phosphorus (PSNS@RP) flame retardant was successfully prepared, with the ability to greatly reduce the release of phosphine and improve the material's ignition point and moisture absorption rate. Adding PSNS@RP to polyamide 66 (PA66) significantly improves the material's flame retardancy and thermal stability.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Xuwen Guo, Zhichao Chen, Yanping Huang, Hao Lv, Yaru Wang, Lizhi Sun, Kai Song, Ben Liu
Summary: Ternary noble metal-metalloid-nonmetal PdBS alloy mesoporous nanospheres with three-dimensional central-radial pore channels were prepared via precise control in reduction and nucleation growth, showing remarkably improved electrocatalytic performance. This finding extends knowledge on the rational design and targeted synthesis of novel noble metal-metalloid-nonmetal alloys for catalysis and other applications.
INORGANIC CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Hee-Kyung Na, Jisun Ki, Minh-Uyen Le, Kyoung-Shim Kim, Chul-Ho Lee, Tae Geol Lee, Jung-Sub Wi
Summary: The study developed a new type of SERS probe formed by enzyme reactions in the presence of Raman reporters, which achieved uniform and stable signal generation for biomolecule detection on chips over long periods. By applying this approach to a SERS-based immunohistochemistry assay, successful multiplexed protein detection was achieved in brain tissue from transgenic mice.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
Preeti Garg, Susruta Narayan Bharti, Susruta Narayan Chaudhary, Sandeep Dalal, Monika Kumari
Summary: This paper focuses on the synthesis of silver nanodendrites and their application in the trace detection of explosive molecules for defense purposes. The study demonstrates the successful fabrication of nanodendritic structures and their use in surface-enhanced Raman scattering for the detection of low concentrations of rhodamine 6G and high melting explosive.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Spectroscopy
Panfeng Wu, Xiaoping Sun, Nana Hao, Li Wang, Jian Huang, Jianjiang Tang
Summary: The study presents the design and synthesis of a new magnetically recyclable SERS substrate with high sensitivity and repeatability for rapid detection in various fields. The substrate shows promising potential in biosensing, photoelectrocatalysis, and medical diagnosis.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Review
Nanoscience & Nanotechnology
Zhandong Li, Dmitry Kurouski
Summary: The review critically discusses recent progress in understanding hot carrier-driven chemistry and catalytic processes at the nanoscale. Experimental and theoretical findings are presented to demonstrate novel plasmon-driven reactivity for redox, coupling, elimination, and scissoring reactions. Additionally, the impact of these findings on plasmonic catalysis and TERS imaging is discussed in the review.
Article
Chemistry, Multidisciplinary
Ojodomo J. Achadu, Njemuwa Nwaji, Dongkyu Lee, Jaebeom Lee, Eser M. Akinoglu, Michael Giersig, Enoch Y. Park
Summary: The novel hierarchically porous 3D magnetic molybdenum trioxide-polydopamine-gold functionalized nanosphere (3D mag-MoO3-PDA@Au NS) shows great potential for pathogen detection, overcoming challenges in Raman signal stability and reproducibility, and achieving ultrasensitive detection of SARS-CoV-2 spike protein.
NANOSCALE ADVANCES
(2022)
Article
Chemistry, Physical
Lei Wu, Yewei Ren, Huaicheng Zhou, Yu Lin, Renxing Liu, Linmao Qian, Bingjun Yu
Summary: This study proposed a novel double-layer rotational symmetry cantilever (DRSC)-based probe lithography for the facile and cost-effective fabrication of large-area, sensitive, and reproducible SERS substrates. The DRSC architecture was optimized and its strength and fatigue were assessed using finite element simulation. The proposed lithography exhibited identical stiffness in all horizontal directions and achieved high-precision fabrication under high-speed reciprocating processes. SERS spectra of malachite green (MG) showed impressive enhancement, excellent stability, and high reproducibility, and practical applications of the prepared SERS substrates were demonstrated.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Luyi Chen, Junlong Huang, Yueru Shi, Xiaoru Peng, Yixin Kuang, Suxin Zhou, Juan Zheng, Xin Yang, Gangfeng Ouyang
Summary: Systematic investigation on the adsorption performance of polystyrene-based nanospheres towards persistent organic pollutants (POPs) is crucial for high-capacity adsorbent design and toxicological risk assessment. In this study, a series of polystyrene-based nanospheres with controllable microstructures were successfully constructed as model adsorbents. It was found that F-functionalized nanospheres (xFFNs) demonstrated better enrichment effects towards PCBs due to stronger sigma (σ)-hole interactions. The xFFNs-coated SPME fiber showed excellent enrichment performance for PCBs, with detection limits of 0.08-0.89 ng L-1 for trace PCB quantification in treated sewage samples.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jiangchao Liu, Chongyang Tang, Zunjian Ke, Rui Chen, Hongbo Wang, Wenqing Li, Changzhong Jiang, Dong He, Gongming Wang, Xiangheng Xiao
Summary: This study systematically investigates the regulation of hydrogen adsorption by d-d orbital interaction of metallic tungsten dioxide and demonstrates that optimizing hydrogen adsorption via d-d orbital modulation is an effective approach to developing efficient and robust catalysts.
ADVANCED ENERGY MATERIALS
(2022)
Review
Materials Science, Multidisciplinary
Jing Wang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: This review provides an overview of the recent developments in polarization-sensitive photodetectors based on anisotropic systems. It presents the classification and anisotropic properties of low-dimensional materials, analyzes the anisotropic characteristics of different material systems from the perspective of crystallography, and discusses the working mechanism of polarization-sensitive photodetectors. Furthermore, it reviews the recent advances of polarization-sensitive photodetectors based on low-dimensional materials and addresses some breakthroughs for future development in this field.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Sabrina M. Younan, Zhida Li, XingXu Yan, Dong He, Wenhui Hu, Nino Demetrashvili, Gabriella Trulson, Audrey Washington, Xiangheng Xiao, Xiaoqing Pan, Jier Huang, Jing Gu
Summary: Active sites within catalysts play a crucial role in driving reactions and catalysis. By spatially confining guest metals in the microenvironments of active sites, the catalytic activity can be improved by modifying the electronic states of the active sites. In this study, the intercalation of zinc single atoms between layers of 1T-MoS2 enhances the performance of the hydrogen evolution reaction (HER) by reducing overpotential, charge transfer resistance, and kinetic barrier. This enhancement is achieved by controlling the coordination geometry and electronic states of the confined zinc atoms, which donate electrons to coordinated sulfur atoms and improve HER kinetics.
Article
Chemistry, Multidisciplinary
Zunjian Ke, Dong He, Xingxu Yan, Wenhui Hu, Nicholas Williams, Hongxing Kang, Xiaoqing Pan, Jier Huang, Jing Gu, Xiangheng Xiao
Summary: Nitrate and nitrite are common contaminants in industrial wastewater and groundwater. The electroreduction of NOx- to produce ammonia presents a sustainable alternative to the energy-intensive Haber-Bosch process. However, the development of selective catalysts that can regulate the reaction pathway and suppress competing reactions is still lacking.
Article
Physics, Applied
Yudong Sun, Jing Wang, Dong He, Menghua Yang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: In this article, a memristive device with a Cu/HfO2/TiO2 nanowire array/FTO structure was fabricated using a hydrothermal method and atomic layer deposition. The devices exhibited good resistive switching properties, including low set voltages (around 1V), good retention (>10^4s), and multilevel storage. Compared to Cu/TiO2 NWA/FTO devices, Cu/HfO2/TiO2 NWA/FTO devices showed better uniformity, possibly due to the difference in dielectric constants between TiO2 and HfO2. Under consecutive voltage pulses, some synaptic functions were mimicked, including long-term potentiation/depression, paired-pulse facilitation, and spike timing dependent plasticity.
APPLIED PHYSICS LETTERS
(2023)
Article
Nanoscience & Nanotechnology
Jing Wang, Hang Xu, Dong He, Hongbo Wang, Yufan Kang, Yongfeng Pei, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: The authors propose to engineer 2D GeSe nanosheets via low-energy ion irradiation for improving the photoresponse and realize a self-driven and higher photoresponsivity by Ag ion irradiation. This work provides a new direction for modification of other 2D materials by ion beam technique for optoelectronic devices.
ADVANCED ELECTRONIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Haoyu Li, Jing Wang, Yongfeng Pei, Yufan Kang, Changzhong Jiang, Wenqing Li, Xiangheng Xiao
Summary: Nonvolatile flash memory is widely used in portable electronic equipment, but its reliability and performance degrade as it approaches its physical limit. This study introduces a MoS2-based Ag nanocrystal memory that can be fabricated in one step through metal ion implantation. The fabricated memory has a 9 V window and a high ON/OFF current ratio (>10(7)), and exhibits good endurance characteristics. The ion implantation technology and the 2D nature of the channel can be utilized for large-scale integration of flexible nanoelectronic memory devices.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Physical
Jincan Ren, Yu Tang, Weibao Li, Dong He, He Zhu, Xingyu Wang, Si Lan, Zijia Yin, Tingting Yang, Zhaowen Bai, Yang Ren, Xiangheng Xiao, Qi Liu
Summary: A synergetic strategy of La, Mg co-doping and LiAlO2@Al2O3 surface coating is designed to enhance the performance of LiCoO2 (CM-LCO) cathode material under extreme temperatures. CM-LCO exhibits excellent temperature adaptability and remarkable electrochemical performance, as well as excellent cycle stability and high-rate performance. The synergistic effects of this co-modification strategy are demonstrated by investigating the electrochemical reaction kinetics and structure evolution of CM-LCO, providing a promising strategy for the application of high-voltage LCO in a wide temperature range.
Review
Chemistry, Multidisciplinary
Yafei Yang, Dong He, Xiaobo Feng, Xiangheng Xiao
Summary: Covalent organic framework (COF) materials have attracted great interest in photocatalytic applications due to their adjustable pore structure and photoelectric properties. However, the weak surface electron coupling and transfer ability limit the activity of pure COFs photocatalysts. To address this issue, a confinement modification strategy has been proposed to introduce low-dimensional entities into COFs, creating new active sites and regulating the band structure. This paper discusses the semiconductor properties of COFs based on photocatalytic thermodynamics and explores the influence of internal linkage motifs and stacking behaviors on the band structure. The confinement characteristics and their impact on photocatalytic performance are explained based on the spatial dimension classification of low-dimensional entities. Finally, the application and mechanism of COF-based confined catalysts in energy conversion reactions are discussed, along with the current challenges and development prospects of COF-based confined hetero-photocatalysts.
Article
Multidisciplinary Sciences
Hang Xu, Shuyao Si, Yipeng Li, Xiangbing Liu, Wenqing Li, Changzhong Jiang, Shijun Zhao, Hui Wang, Xiangheng Xiao
Summary: The radiation response of Nb-containing FeCrAl alloys under heavy ion radiation has been studied, showing excellent performance and the critical role of Laves phase in capturing radiation defects. The stability of Laves phase in radiation environment has been analyzed.
FUNDAMENTAL RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Chongyang Tang, Dong He, Nan Zhang, Xianyin Song, Shuangfeng Jia, Zunjian Ke, Jiangchao Liu, Jianbo Wang, Changzhong Jiang, Ziyu Wang, Xiaoqing Huang, Xiangheng Xiao
Summary: Engineering the electronic structure of surface active sites at the atomic level can efficiently modulate catalyst reactivity. By anchoring atomically dispersed metal atoms on FePS3 nanosheets, a strong electronic coupling effect is achieved, facilitating electron aggregation and enhancing electron-transfer for improved oxygen and water adsorption processes, leading to enhanced oxygen evolution and hydrogen evolution reactions. The concept of electronic coupling interaction provides a new method for catalyst design and beyond, demonstrating outstanding electrochemical water-splitting activities in the study.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
