Article
Chemistry, Multidisciplinary
Chiara Amicucci, Cristiano D'Andrea, Marella de Angelis, Martina Banchelli, Roberto Pini, Paolo Matteini
Summary: This paper introduces a graphene paper-supported plasmonic substrate for biodetection, which provides stable SERS signals at sub-millimolar concentration and a detection limit down to the nanogram level in the case of hemoglobin. The presence of a graphene underlayer ensures an even surface distribution of SERS hotspots and improved stability of the SERS signal.
Article
Chemistry, Multidisciplinary
B. C. Bhadrapriya, A. Akshaya, M. T. Rahul, Abhijit Saha, Sabu Thomas, Nandakumar Kalarikkal
Summary: We have developed an effective method to create a 3D nanostructure of silver nanowire-decorated mesoporous cobalt oxide nanocones on a glass substrate. The substrate's structural and morphological properties were extensively studied. Additionally, the surface-enhanced Raman scattering (SERS) sensing performance of these nanostructure hybrids was evaluated for detecting H2O2, showing excellent detection behavior even at very low concentrations (10(-14) M). The developed 3D nanostructure holds great potential for efficient SERS substrates in onsite environmental, forensic, and food safety monitoring.
JOURNAL OF NANOPARTICLE RESEARCH
(2023)
Article
Biochemistry & Molecular Biology
Mohammad Kamal Hossain
Summary: In this study, a conventional silicon wafer was treated to expose terraces within the silicon nanostructures (Si-NSs) and decorated with silver nanoparticles (Ag-NPs) to enhance the surface-enhanced Raman scattering (SERS) activity. The SERS activity of Ag-NPs-decorated Si-NSs was found to be significantly enhanced compared to pristine Si-NSs. Three electromagnetic field models were developed to support experimental observations, indicating that Si-NSs facilitate light confinement and can be cascaded within different Ag-NPs-decorated terraces.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Analytical
Chao Sun, Li Ye, Lizheng Wang, Zhiming Hu, Jianjun Ding
Summary: In this study, a low-cost and convenient flexible surface enhanced Raman scattering (SERS) gold core-silver shell-sponge (Au-Ag-sponge) substrate was synthesized by chemical reduction. The substrate showed good activity for Raman probe molecules and was successfully applied for qualitative and quantitative detection of pesticide residues.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Analytical
Chao Sun, Li Ye, Lizheng Wang, Zhiming Hu, Jianjun Ding
Summary: To overcome the difficulty of traditional pesticide sampling, a low-cost and convenient flexible surface enhanced Raman scattering (SERS) gold core-silver shell-sponge (Au-Ag-sponge) substrate was synthesized. The substrate consisted of Au-AgNPs and a melamine sponge, which had an open pore structure to capture Au-AgNPs and generate hot spots. The substrate showed good activity for detecting pesticide residues, with the Raman intensity well related to the concentration of pesticide solution.
ANALYTICAL METHODS
(2023)
Article
Chemistry, Analytical
Ling Li, Longcheng Zhang, Lichen Gou, Siqi Wei, Xiandeng Hou, Li Wu
Summary: Metal-semiconductor composites are widely used as SERS substrates, but their limited stability and poor active sites hinder their commercial application. In this study, a novel self-supporting flexible SERS substrate, Au@CoP/CC, was developed. The substrate exhibited excellent corrosion resistance and a low limit of detection using rhodamine 6G as a model dye. Finite-difference time-domain simulation results showed that the substrate can provide regions with intense local electric field enhancement. Moreover, the Au@CoP/CC substrate can degrade target organic dyes under visible light irradiation, enabling self-cleaning and reproduction of SERS-active substrates.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Wenlong Liao, Kunpng Liu, Yangjie Chen, Jianping Hu, Ya Gan
Summary: The article reports a facile method to fabricate Au-Ag bimetallic nanoparticles decorated silicon nanowires as 3D SERS substrates, and investigates the effects of Au-Ag bimetallic nanoparticles size and composition ratios on SERS performance through experiments and theoretical simulations. The prepared 3D SERS substrate shows higher SERS enhancement factor and oxidation resistance ability, making it potentially suitable for ultrasensitive detection of trace analytes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Spectroscopy
Dipanwita Majumdar, Subhajit Jana, Samit Kumar Ray
Summary: In this study, a nanohybrid SERS platform was developed by decorating two-dimensional WSe2 flakes with zero-dimensional Au NPs. The hybrid structure exhibited promising SERS activity with a detection limit as low as 10(-9) M, along with reliable signal stability and reproducibility. These results indicate the great potential of the nanohybrid structure in SERS applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Engineering, Electrical & Electronic
Graham Dawson, Xiaorong Cheng, Anthony Centeno, Yulia Pilyugina, Wentian Niu, Ruochen Liu
Summary: In this study, a novel triad nanocomposite was prepared with excellent SERS properties. By controlling the size and position of silver nanoparticles, and matching the localized surface plasmon resonance (LSPR) of the silver particles with the Raman excitation wavelength, a SERS enhancement greater than 6 orders of magnitude was achieved. Electromagnetic modeling was used to provide a theoretical basis for these results.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Electrochemistry
Yiwen Wang, Guodong Zhu, Dongfang Wang, Manhong Huang, Jianmao Yang, Jianyun Liu
Summary: In this study, ultrafine Ag nanoparticles-decorated polyaniline nanowire arrays were successfully synthesized and applied for the rapid and accurate detection of sulfamethoxazole (SMX). The modified electrode exhibited a high electrochemical response and sensitivity, making it suitable for assessing the environmental risk of antibiotics.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Mohammad Jafari, Mitra Mousavi, Kamal Shirzad, Monireh-Alsadat Hosseini, Alireza Badiei, Pouran Pourhakkak, Jahan B. Ghasemi
Summary: The Ag-deposited TiO2 nanotube arrays (TNTA/Ag) were successfully prepared by decorating Ag nanoparticles on anodized TiO2 nanotubes, serving as a probe for vitamin B12 detection. The probe exhibited superior detection sensitivity and reproducibility, with the ability to self-clean and be reused. Detection of vitamin B12 in real pharmaceutical samples further confirmed the reliability of the TNTA/Ag SERS probe.
MICROCHEMICAL JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Xudong Cheng, Jing Jin, Mengting Shi, Minghui Ge, Jinqi Miao, Cheng Ci, Zhenyu Xue, Peimei Dong
Summary: A facile and green synthesis strategy was used to prepare a uniform three-dimensional (3D) nanostructure as surface-enhanced Raman scattering (SERS) sensors by decorating Ag nanoparticles (AgNPs) on TiO2 nanorod arrays. The AgNPs were distributed uniformly on the surface of TiO2 nanorods, as confirmed by XPS, SEM, and TEM analyses. The 3D hybrid substrate exhibited sensitive SERS signals and excellent spatial uniformity. The results also demonstrated the promising potential of the two-step synthesis strategy for preparing 3D hybrid nanostructure substrates for SERS.
MATERIALS TODAY COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Anwesha Mukherjee, Mohamad Gnaim, Idan Shem Tov, Laura Hargreaves, Joseph Hayon, Alexander Shluger, Yossi Rosenwaks
Summary: This sensor combines nanowire technology and Pd NPs to achieve high sensitivity and response at room temperature, low power consumption, fast response and recovery times, and stable sensing performance even in high humidity conditions.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Laser Assisted, Savita Rani, A. K. Shukla
Summary: The fabrication of silicon nanowires by metal-assisted chemical etching and deposition of silver nanoparticles by the electroless method can be used for SERS detection of organic pollutants. Study shows that increasing the length of SiNWs decreases the enhancement of SERS, and SERS has potential in discriminating mixed dyes.
Article
Chemistry, Physical
Huimin Sun, Xiuting Li, Ziyang Hu, Chenjie Gu, Dong Chen, Jun Wang, Bin Li, Tao Jiang, Xingfei Zhou
Summary: This research has successfully designed and fabricated a distinctive hydrophilic-hydrophobic SERS substrate utilizing paper and Ag nanowires, achieving goals such as enhanced SERS activity, microdroplet anchoring, and sample enrichment. It can be applied in environmental monitoring and in-situ detection effectively.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Abu Talha Aqueel Ahmed, Sankar Sekar, Shubhangi S. Khadtare, Nurul Taufiqu Rochman, Bathula Chinna, Abu Saad Ansari
Summary: In this study, MnCo2S4 nanosheet catalyst was successfully synthesized and found to exhibit superior performance in hydrogen evolution. Compared to MnCo2S4, MnCo2S4 showed low overpotentials, moderate Tafel slope, and excellent sustainability. The outstanding performance can be attributed to the increased number of electrochemically active sites and enhanced electronic conductivity on the catalyst surface.
Article
Chemistry, Multidisciplinary
Victor V. Maltsev, Elena A. Volkova, Elizaveta V. Koporulina, Diana D. Mitina, Vladimir L. Kosorukov, Anna I. Jiliaeva, Daniil A. Naprasnikov, Konstantin N. Gorbachenya, Viktor E. Kisel
Summary: The phase relationships, crystal properties and luminescence kinetics of two complex systems were studied, including unit cell parameters, segregation coefficients of impurities, and lifetimes of energy levels.
Article
Chemistry, Multidisciplinary
Xiaoman Zhang, Wangwang Xu, W. J. Meng, Andrew C. Meng
Summary: This study successfully grew high-quality single crystal AlScN nanowires through ultra-high vacuum reactive sputtering technique and characterized their structure and properties. The nanowires exhibit significantly reduced mosaic spread and predominantly single ferroelectric domains, as well as a high piezoelectric constant.
Article
Chemistry, Multidisciplinary
Tom E. de Vries, Elias Vlieg, Rene de Gelder
Summary: Networks are important for describing relationships between people, roads between cities, reactions between chemicals, and other interactions. Bipartiteness, dividing the network into two groups, can facilitate the study of the network's structure. We have developed an algorithm that can find a near-optimal bipartisation within a reasonable time frame and used it to uncover the hidden structure of the CSD cocrystal network.
Article
Chemistry, Multidisciplinary
Chuchu Han, Jing Yang, Xin Zhang, Aisen Li, Jiang Peng
Summary: An elastic crystal based on a photo-reactive acylhydrazone derivative is reported, which exhibits reversible bending behavior under UV irradiation and heating. The crystal undergoes reversible E<->Z isomerization under light and heating conditions. The crystal demonstrates excellent elastic properties and the bending can be controlled to control the output direction of red light.
Article
Chemistry, Multidisciplinary
Lingfeng Zhang, Yu Wang, Yefeng Wang, Shuai Liu, Na Zhang, Mingmin Yang, Haixia Ma, Zhaoqi Guo
Summary: This study designs and synthesizes a series of high-energy salts compounds without heavy metal ions and azide groups. The molecular structures and stability of the compounds are confirmed through single-crystal X-ray diffraction and intermolecular interaction analysis. Furthermore, the thermal stability, energetic properties, and electrical initiation properties of the compounds are investigated, suggesting their potential as primary explosives.
