Article
Chemistry, Analytical
W. Cheuquepan, S. Hernandez, M. Perez-Estebanez, L. Romay, A. Heras, A. Colina
Summary: Electrochemistry can be used to generate SERS substrates, utilizing the plasmonic properties of nanos-tructures and the chemical mechanism, with time-resolved Raman spectroelectrochemistry providing valuable information. Comparing Au and Ag metals for folic acid detection in drugs, it was found that Ag SERS substrates outperformed Au SERS substrates in complex samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
Ilya A. Milekhin, Alexander G. Milekhin, Dietrich R. T. Zahn
Summary: This study presents the optical response of spherical CdSe nanocrystals using SERS and TERS techniques, achieving significant enhancement of optical phonons by selecting appropriate plasmonic substrates. Combining Raman scattering with atomic force microscopy offers nanoscale spatial resolution for investigating phonon properties. Gap-mode TERS further enhances Raman scattering of CdSe NCs' optical phonon modes with nanometer spatial resolution, providing new pathways for optical characterization and phonon spectrum details at the nanometer scale of single semiconductor nanostructures.
Article
Chemistry, Multidisciplinary
Qing Chen, Marie Betker, Constantin Harder, Calvin J. Brett, Matthias Schwartzkopf, Nils M. Ulrich, Maria E. Toimil-Molares, Christina Trautmann, L. Daniel Soederberg, Christian L. Weindl, Volker Koerstgens, Peter Mueller-Buschbaum, Mingming Ma, Stephan Roth
Summary: This study reports a novel strategy of utilizing cellulose nanofibril (CNF) as a template to fabricate TiO2/CNF thin films with tailored morphology and crystallinity for enhanced SERS sensitivity. By combining atomic layer deposition and thermal annealing, polymorphous TiO2/CNF thin films with defined morphology were achieved, showing a high enhancement factor in semiconductor metal oxide nanomaterial (SMON)-based SERS substrates. The improved SERS sensitivity is attributed to the cooperative modulation of CNF template morphology and TiO2 crystalline state.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Jan Krajczewski, Robert Ambroziak, Andrzej Kudelski
Summary: Surface-Enhanced Raman Scattering (SERS) refers to the phenomenon where the efficiency of generating Raman spectra by molecules adsorbed on some substrates is many orders of magnitude larger than those that are not adsorbed. Significant advances have been made in utilizing nanostructured non-metallic materials as SERS substrates, showing great potential for future applications.
Article
Chemistry, Multidisciplinary
Lei Liu, Jianlun Guo, Youqiang Xing, Ze Wu
Summary: This study aims to achieve an ultrasensitive SERS platform by fabricating ordered CdS/MoS2@Au nanoparticles nanopillars with high-density active hotspots through precise adjustment of pillar diameter and obtaining the most favorable gap size between the pillars.
ADVANCED MATERIALS INTERFACES
(2022)
Review
Nanoscience & Nanotechnology
Yuting Jing, Ruijing Wang, Qunlong Wang, Zheyuan Xiang, Zhengxin Li, Hongbo Gu, Xuefeng Wang
Summary: Metallic nanoparticles are efficient substrates for surface-enhanced Raman scattering due to their various shapes and sizes. Pulsed laser deposition (PLD) is a feasible physical method for synthesizing metallic NPs with controllable sizes and surface characteristics. The recent advances in PLD preparation of SERS substrates, including the influences of parameters on the sizes and morphologies of metallic NPs and their applications in environmental monitoring and biomedical analysis, are summarized.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Review
Optics
Moram Sree Satya Bharati, Venugopal Rao Soma
Summary: Flexible substrates used as SERS platforms for detecting hazardous materials offer advantages of low cost and easy sampling, making them potentially valuable for trace detection of hazardous materials.
OPTO-ELECTRONIC ADVANCES
(2021)
Article
Chemistry, Analytical
Xinxin Wang, Lin Zhu, Tangjie Cheng, Jisong Qian, Qing Wang, Qianqian Ding, Aidong Li, Liyong Jiang, Yanqiang Cao
Summary: This paper reported a simple strategy to obtain clean Ag dendrites by high temperature decomposition of organic impurities. Ultra-thin coating via atomic layer deposition (ALD) was used to retain the nanostructure of Ag dendrites at high temperature. SERS activity could be recovered after etching ALD coating, and organic impurities could be effectively removed. This strategy is a promising and non-destructive method to clean the SERS substrates.
Article
Chemistry, Multidisciplinary
Haichao Zhai, Chuhong Zhu, Xiujuan Wang, Yupeng Yuan, Haibin Tang
Summary: This study presents a simple method for fabricating arrays of Ag-nanoparticles decorated TiO2 nanotubes. These nanotube arrays exhibit high sensitivity and can be reused for rapid and trace SERS detection of organic chemicals.
FRONTIERS IN CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
K. Girel, A. Burko, S. Zavatski, A. Barysiuk, K. Litvinova, E. Eganova, A. Tarasov, D. Novikov, S. Dubkov, H. Bandarenka
Summary: In this study, two types of substrates, silver-coated porous silicon (por-Si) and HfOx/por-Si, were engineered for surface enhanced Raman scattering (SERS) spectroscopy. The HfOx/por-Si substrates showed better SERS activity and remained stable during the SERS measurements. It is suggested that the presence of HfOx provides athermal effect on the analyte.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Spectroscopy
Vahid Eskandari, Hossein Sahbafar, Elaheh Karooby, Masoud Hakimi Heris, Saeideh Mehmandoust, Damoun Razmjoue, Amin Hadi
Summary: This study developed silver nanoparticles-decorated filter paper substrates as surface-enhanced Raman scattering (SERS) biosensors for the detection of acyclovir (ACV). The SERS biosensors showed high sensitivity and reproducibility in detecting ACV, indicating their potential as SERS-based biosensors for trace substance detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Spectroscopy
Tong Zhang, Shunhua Zhu, Jingjing Wang, Zhiying Liu, Mingxin Wang, Shibao Li, Qingli Huang
Summary: Fabricating sensitive, stable and low-cost nanomaterials for glucose detection is crucial for disease diagnosis and monitoring. In this study, a nanocomposite (polypyrrole bridging GO@Au@MnO2) was developed as a novel surface-enhanced Raman scattering (SERS) nanoprobe for quantitative glucose detection in trace serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Nikiwe Mhlanga, Thabang A. Ntho, Hleko Chauke, Lucky Sikhwivhilu
Summary: Surface-enhanced Raman spectroscopy (SERS) is a technique that enhances conventional Raman signals using surfaces, with potential applications in disease diagnosis and pollutant detection. However, the roughness of SERS substrates has led to irreproducibility issues, limiting real-life applications. Graphene-enhanced Raman spectroscopy (GERS), a two-dimensional alternative, has been proposed to mitigate this problem. Combining SERS and GERS, using graphene doped with plasmonic metallic substrates, has shown significant enhancement, matching the results achieved through electromagnetic and charge transfer mechanisms.
FRONTIERS IN CHEMISTRY
(2022)
Article
Chemistry, Physical
Hongyan Xi, Hongfei Gu, Yurui Han, Tingting You, Pengfei Wu, Qingqing Liu, Lirong Zheng, Shuhu Liu, Qiang Fu, Wenxing Chen, Yukun Gao, Yuting Wang, Penggang Yin
Summary: Fe single atoms supported on Ti3C2Tx have been developed as peroxidase-like nanozymes for sensing five antioxidants. The Fe single atoms exhibit excellent catalytic performance and electron transfer occurs along Fe-O-Ti ligands. This system enables high identifiable catalytic property and wide detection concentration ranges for antioxidants.
Article
Electrochemistry
Sheila Hernandez, Juan Perales-Rondon, Aranzazu Heras, Alvaro Colina
Summary: EC-SOERS is a new phenomenon that enhances the Raman signal during the oxidation of a metal surface. Studies show that carbonyl and carboxyl groups are necessary to observe this phenomenon, with a delocated charge being important factor. Evaluating the enhancement factors for different molecules with highly delocated charge and a carboxyl group sheds more light on the interaction of molecules with the electrochemically generated SOERS substrates.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Kevin M. Siniard, Meijia Li, Shi-Ze Yang, Junyan Zhang, Felipe Polo-Garzon, Zili Wu, Zhenzhen Yang, Sheng Dai
Summary: Facile and efficient production of ultra-stable metal nanocatalysts based on strong metal-support interactions (SMSI) was achieved through ultrasonication in water at ambient conditions, which generated abundant active intermediates, Ti3+ ions, and oxygen vacancies to induce SMSI overlayer formation. The degree of encapsulation could be controlled by the reducibility of solvents and ultrasonication parameters. This approach can be extended to other metal oxide supports and noble metal nanoparticles, leading to enhanced performance in hydrogenation reactions and CO2 conversion.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Juntian Fan, Tao Wang, Bishnu P. P. Thapaliya, Meijia Li, Chi-Linh Do-Thanh, Takeshi Kobayashi, Ilja Popovs, Zhenzhen Yang, Sheng Dai
Summary: Researchers have successfully synthesized nitrogen-doped graphyne materials through a mechanochemistry-driven pathway using electron-deficient aromatic nitriles and CaC2 as precursors. The obtained materials exhibit abundant nitrogen content, tunable surface areas, and hierarchical porosity, making them promising for energy storage applications. These materials also demonstrate high capacitance, attractive rate performance, and good long-term stability in supercapacitor-related applications.
Article
Chemistry, Physical
Yifan Sun, Zhenzhen Yang, Sheng Dai
Summary: Strong metal-support interaction (SMSI) plays a crucial role in heterogeneous catalysis, and recent advancements have led to the development of novel catalytic systems beyond the traditional Pt-TiO2 catalyst. Characterization techniques at different scales have been used to unravel the structural complexity of SMSI. Synthesis strategies utilizing chemical, photonic, and mechanochemical driving forces have expanded the definition and application of SMSI. Precise structure engineering has allowed for a better understanding of the interface, entropy, and size effect on the geometric and electronic characteristics. The exploration of metal-support interactions holds immense potential for enhancing catalytic activity, selectivity, and stability.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Shengjun Du, Jiawu Huang, Matthew R. Ryder, Luke L. Daemen, Cuiting Yang, Hongjun Zhang, Panchao Yin, Yuyan Lai, Jing Xiao, Sheng Dai, Banglin Chen
Summary: We report polydopamine-derived carbons with tailorable sub-5 angstrom micropore orifices and larger microvoids for olefin/paraffin separation. The sub-5 angstrom micropores allow the entry of olefins while excluding paraffins, achieving precise discrimination. The larger microvoids enable high ethylene and propylene capacities under ambient conditions. This study opens an avenue to exploit the sub-5 angstrom micropores in carbon for desirable size-exclusion effect.
NATURE COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Zhun Dong, Wenda Hu, Hongjun Liu, Zhenzhen Yang, Debabrata Moitra, De-en Jiang, Sheng Dai, Jian Zhi Hu, Di Wu, Hongfei Lin
Summary: It is found that treating UiO-66 with methanol solvent and thermal activation can significantly enhance its CO2 adsorption capacity. Methanol treatment effectively removes residual impurities in the micropores of UiO-66 and improves its surface area, pore volume, and void fraction, leading to a close-to-ideal CO2 adsorption capacity.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
Runming Tao, Tianyu Zhang, Xiao-Guang Sun, Chi-Linh Do-Thanh, Sheng Dai
Summary: A new W6+-doped TiNb2O7 material with a nanoporous structure (NPTWNO) was prepared through an ionothermal synthesis-assisted doping strategy. The improved Li+ diffusion coefficient of NPTWNO suggests that the ionic-liquid-templated nanoporous architecture enhances Li+ diffusion kinetics. The doped W6+ successfully boosts the electronic conductivity by narrowing the conduction-valance bandgap, as revealed by the density functional theory computational study.
BATTERIES & SUPERCAPS
(2023)
Article
Chemistry, Multidisciplinary
Bishnu P. P. Thapaliya, Tao Wang, Albina Y. Y. Borisevich, Harry M. M. Meyer III, Xiao-Guang Sun, Mariappan Parans Paranthaman, Craig A. A. Bridges, Sheng Dai
Summary: High-capacity cathodes (LiNi0.8Mn0.1Co0.1O2, NMC811) have the potential for vehicle electrification due to their high gravimetric energy density, but their electrochemical performance depends on the stability of the cathode electrolyte interphase (CEI). A conformal LiF layer formed on the NMC811 electrode surface through an in situ ion-exchange metathesis process improves the electrochemical performance by stabilizing the CEI. This finding could pave the way for enhancing the electrochemical performances and cycling stability of high-capacity cathodes by reengineering the CEI.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Qiang Deng, Honggen Peng, Zhenzhen Yang, Tao Wang, Jun Wang, Zheling Zeng, Sheng Dai
Summary: Developing a powerful bifunctional catalyst is crucial for achieving future carbon neutrality by reducing energy consumption in the chemical industry. This study synthesizes mesoporous zeolite-encapsulated palladium nanoparticles (Pd@meso-ZSM-5) using emulsification-demulsification and dry-gel transformation methods, which exhibit remarkable catalytic performance in the one-pot multiple tandem reaction of cyclic ketones to bicyclic alkanes. Unlike traditional two-step synthesis routes, Pd@meso-ZSM-5 efficiently produces bicyclic alkanes instead of monocyclic alkanes, due to the sufficient space for large molecular intermediates provided by mesoporosity and the promoting effect of the acid-Pd interface on intermediate conversion.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Allison M. Fleshman, Allison M. Goldman, Wesley J. Hetcher, Stefan L. Debbert, Chi-Linh Do-Thanh, Shannon M. Mahurin, Sheng Dai
Summary: The methylation of imidazolium-based room temperature ionic liquids (RTILs) paired with [Tf2N](-) anion results in an unexpected increase in viscosity, while the viscosity decreases when the methylated imidazolium is paired with [B(CN)(4)](-) anion. The compensated Arrhenius formalism (CAF) is used to study the viscosity observations, focusing on the activation energy and entropy of activation. The results show that the activation energy increases with methylation for [Tf2N](-), but decreases for [B(CN)(4)](-).
JOURNAL OF PHYSICAL CHEMISTRY B
(2023)
Article
Chemistry, Multidisciplinary
Yujing Tong, Hongjun Liu, Sheng Dai, De-en Jiang
Summary: Researchers have discovered a new type of monolayer covalent fullerene network that shows promising potential as a high-permeance, selective hydrogen separation membrane. These membranes have the best pore size match, a unique funnel-shaped pore, and entropic selectivity, making them ideal for separating H-2 from larger gases such as CO2 and O-2. With excellent hydrogen permeance and high selectivity, these ultrathin membranes surpass the 2008 Robeson upper bounds by a large margin.
Article
Chemistry, Multidisciplinary
Yating Yuan, James Gaugler, Juntian Fan, Bishnu Prasad Thapaliya, Huimin Luo, Abderrahman Atifi, Luis A. Diaz, Sheng Dai
Summary: The electrochemical deposition of rare earth metals at room temperature has gained increasing attention for its energy efficiency advantage over traditional processes. However, the formation of a passivating fluoride layer during electrolyte decomposition is often overlooked, leading to the rapid decay of deposition current and hindering practical application. To address this issue, a fluorine-free electrolyte utilizing borohydride anion was demonstrated, enabling efficient electrodeposition of rare earth metals without passivation effect. Synergetic effects between rare earth borohydride and lithium borohydride were observed, promoting dissociation and improving ionic conductivity and electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Qingqing Zhang, Xiao-Guang Sun, Kai Liu, Qian Xu, Shijian Zheng, Sheng Dai
Summary: By combining NVPF with CNT, the electronic conductivity and interphase characteristics of NVPF are significantly improved, leading to enhanced cathode/electrolyte interface layer. The conducting network formed by CNT can accommodate volumetric changes and improve the cyclic performance of NVPF/hard carbon full cells. This research provides a competitive strategy to facilitate the interfacial compatibility between NVPF and electrolytes and accelerate the commercialization of high-performance Na-ion batteries.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Md Arifuzzaman, Bobby G. Sumpter, Zoriana Demchuk, Changwoo Do, Mark A. Arnould, Md Anisur Rahman, Peng-Fei Cao, Ilja Popovs, Robert J. Davis, Sheng Dai, Tomonori Saito
Summary: Plastic recycling is limited due to the difficulty of recycling mixed plastics. A versatile organocatalyst has been developed for selective glycolysis of diverse consumer plastics and their mixed waste streams, providing a chemical recycling path for many existing mixed plastics. The production of condensation polymers from the deconstructed monomers can significantly reduce greenhouse gas emissions and energy input, promoting plastic circularity towards a net-zero carbon society.
MATERIALS HORIZONS
(2023)
Article
Chemistry, Physical
Yifan Sun, Zhenzhen Yang, Sheng Dai
Summary: Strong metal-support interaction (SMSI) has a significant impact on the performance of heterogeneous catalysts. Recent development in nonclassical SMSIs has led to novel and advantageous catalytic systems. The structural complexity of SMSI requires multiple characterization techniques at different scales.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Liqi Qiu, Yuqing Fu, Zhenzhen Yang, Anna C. Johnson, Chi-Linh Do-Thanh, Bishnu P. Thapaliya, Shannon M. Mahurin, Liang-Nian He, De-en Jiang, Sheng Dai
Summary: In this study, pyrazolonate-derived SILs with anti-oxidation properties were developed by introducing aza-fused rings in the oxygenate-derived anions. These SILs showed promising and tunable CO2 uptake capacity surpassing the phenolate-based SIL through a carbonate formation pathway, as confirmed by spectroscopy studies.