Article
Multidisciplinary Sciences
Brajesh Kumar, Kumari Smita, Yolanda Angulo, Alexis Debut, Luis Cumbal
Summary: In this study, gold nanoparticles were biosynthesized using water extract of pollen from Andean honeybees, characterized by various techniques, and tested for catalytic reduction of 4-NP. The synthesized AuNPs exhibited good dispersion, spherical and triangular shapes, with particle sizes ranging from 7 to 42 nm and a maximum wavelength of 530 nm.
Article
Chemistry, Analytical
Vicente Antonio Miron-Merida, Yadira Gonzalez-Espinosa, Mar Collado-Gonzalez, Yun Yun Gong, Yuan Guo, Francisco M. Goycoolea
Summary: The study assessed the performance of two aptamers (40 and 96 nt) in the colorimetric quantification of FB1 through an aptamer-target incubation step followed by the addition of gold nanoparticles (AuNPs) and NaCl. While MgCl2 and Tris-HCl were crucial for aptamer 96 and 40 nt, respectively, the latter was not specific for FB1. Instead, the formation of Aptamer (96 nt)-FB1-AuNP conjugates in MgCl2 exhibited stability to NaCl-induced aggregation at increasing FB1 concentrations. The application of asymmetric flow field-flow fractionation (AF4) allowed for size separation and characterization with a reduction in the limit of detection from 0.002 mu g/mL to 56 fg/mL.
Article
Chemistry, Multidisciplinary
Shafiquzzaman Siddiquee, Suryani Saallah, Noor Aini Bohari, Gilbert Ringgit, Jumardi Roslan, Laila Naher, Nur Fatihah Hasan Nudin
Summary: The study introduced a facile method for determining melamine in milk powder products based on the aggregation of 5 nm gold nanoparticles. The method showed high sensitivity, good recoveries, and the ability for real-time detection by the naked eye.
Article
Acoustics
Silvia Perez-Rafael, Guillem Ferreres, Rudolf W. Kessler, Waltraud Kessler, Jeniffer Blair, Garima Rathee, Angela Gala Morena, Tzanko Tzanov
Summary: As the most abundant renewable aromatic polymer on the planet, lignin is gaining growing interest in replacing petroleum-based chemicals and products. However, only <5% of industrial lignin waste is revalorized in its macromolecular form as additives, stabilizing agents or dispersant and surfactants. In this study, an environmentally-friendly continuous sonochemical nanotransformation process was implemented to obtain highly concentrated lignin nanoparticles (LigNPs) dispersions for added-value material applications.
ULTRASONICS SONOCHEMISTRY
(2023)
Article
Spectroscopy
Xujing Yuan, Linlin Ge, Haichun Zhou, Junqi Tang
Summary: Gold nanostructures, particularly isotropic spherical gold nanoparticles (AuNPs), have been extensively studied for their catalytic activity in heterogeneous catalytic processes. In this study, the influence of size, composition, and surface capping agents on the catalytic activity of AuNPs in reduction reactions was investigated. The results showed that the catalytic activity of AuNPs decreases with increasing size, while the presence of anisotropic AuNPs did not significantly affect the catalytic activity of AuNPs with tartrate as the reducing agent. Additionally, silver was found to enhance both the monodispersity and catalytic activity of small AuNPs. Overall, this study provides valuable insights into the factors that influence the catalytic activity of AuNPs and expands the potential applications of gold-based catalysts and AuNPs in various fields.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Multidisciplinary
Wei Liu, Yongyang Li, Lin Li, Jingfang Shangguan, Yufei Liu, Tianjun Ni, Yaofeng Wang, Jing Kang
Summary: This research explores a simple and sensitive colorimetric method for detecting metformin using synthesized gold nanoparticles. The findings show that the addition of metformin to the solution results in the instability and aggregation of the gold nanoparticles, leading to a change in the absorption peak wavelength. Additionally, the concentration of NaCl also affects the aggregation process of the gold nanoparticles. The method demonstrates a linear relationship for detecting metformin in the concentration range of 150 nM to 500 nM.
Article
Environmental Sciences
S. Tamilselvan, R. M. Soniya, R. Vasantharaja, M. Kannan, S. Supriya, B. Prabhu Dass Batvari, T. Ramesh, K. Govindaraju
Summary: This study investigated a simple silver nanoparticle that can be used for the qualitative and quantitative sensing of heavy metal ions in aqueous solutions. The particles exhibited changes in their UV-vis absorption spectrum, indicating the presence of different metal ions.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Ina Erceg, Vida Strasser, Nicolas Somers, Marta Jurkovic, Jasminka Kontrec, Damir Kralj, Rinea Barbir, Ivana Vinkovic Vrcek, Marie Lasgorceix, Anne Leriche, Maja Dutour Sikiric
Summary: This study investigates the interactions between blood serum proteins and biomaterials and their effects on the fate of biomaterials in vivo. The adsorption kinetics and binding interactions of bovine serum albumin (BSA) with different types of biomaterials were studied. The obtained data provide insights for modifying the protein adsorption and binding properties of biomaterials.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Materials Science, Biomaterials
Yi-Fan Wang, Meng-Meng Pan, Yong-Li Song, Zhi Li, Le Wang, Ming Jiang, Xu Yu, Li Xu
Summary: This study successfully synthesized a versatile nitrogen-doped silicon quantum dot (N-SiQD) and demonstrated its potential applications in bacterial imaging, synthesis of nanocomposites, and antimicrobial properties.
JOURNAL OF MATERIALS CHEMISTRY B
(2022)
Article
Spectroscopy
Smita Verma, Velayutham Ravichandiran, Nihar Ranjan
Summary: A selective fluorescence sensor for carbonate ions has been developed in this study, which can rapidly detect low concentrations of carbonate ions. Experimental results demonstrate direct interaction between the sensor and carbonate ions, with potential implications for disease prevention and toxicity assessment.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2021)
Article
Chemistry, Analytical
Duy-Khiem Nguyen, Chang-Hyun Jang
Summary: The designed colorimetric aptasensor utilizes a DNA aptamer and gold nanoparticles to detect anatoxin-a. The color change from red to blue of AuNPs in the presence of ATX-a is a direct result of the specific binding of the aptamer with ATX-a, allowing for easy measurement of ATX-a concentration in a linear range from 10 pM to 200 nM with high selectivity. This method shows promise as a rapid and sensitive alternative for detecting ATX-a in the environment.
Article
Food Science & Technology
Sadhan Jyoti Dutta, Gourav Chakraborty, Vineet Chauhan, Lochan Singh, Vijay Singh Sharanagat, Vijay Kumar Gahlawat
Summary: A simple and cost-effective method using silver nanoparticles and UV-Vis spectroscopy was developed for determining urea concentration in milk. The predictive model performed well within the measurement range and was validated against existing methods, proving to be useful for small businesses in the dairy industry.
LWT-FOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Chemistry, Physical
Qingli Zou, Yue Sun, Zhuojian Liang, Wanwan Wang, Yi-Chun Lu
Summary: Magnesium-sulfur batteries offer higher theoretical volumetric energy density and lower cost compared to lithium-sulfur batteries, but suffer from poor cycle life and low energy efficiency. By increasing polysulfide solubility with high-donor-number solvents like dimethyl sulfoxide (DMSO), the discharge capacity and sulfur overpotential can be improved, leading to higher performance and reversible cycling.
ADVANCED ENERGY MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Narayan Sinha, Juan-Ramon Jimenez, Bjorn Pfund, Alessandro Prescimone, Claude Piguet, Oliver S. Wenger
Summary: By combining pi-donating amido with pi-accepting pyridine coordination units in a tridentate chelate ligand, a strong nephelauxetic effect was achieved in a homoleptic Cr-III complex, shifting its luminescence to the NIR-II spectral range. This study focuses on increasing metal-ligand bond covalence to shift the ruby-like E-2 emission of Cr-III to 1067 nm at 77 K, taking a fundamentally different approach from previous ligand design strategies.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Ekaterina Podlesnaia, Andrea Csaki, Wolfgang Fritzsche
Summary: This study successfully determined the necessary reaction time for each step of synthesizing shape-anisotropic plasmonic nanoparticles like gold nanotriangles by replicating a seed-mediated synthesis method with high reproducibility. Real-time investigations elucidated the kinetics of the individual stages, leading to the optimization of the complete synthesis, reducing the synthesis time from three days to one without any loss in sample quality.
Article
Nanoscience & Nanotechnology
Junqi Tang, Qianrun Zhao, Ning Zhang, Shi-Qing Man
MICRO & NANO LETTERS
(2015)
Article
Spectroscopy
Junqi Tang, Kunpeng Gao, Quanhong Ou, Xuewen Fu, Shi-Qing Man, Jie Guo, Yingkai Liu
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2018)
Article
Materials Science, Biomaterials
Junqi Tang, Xuewen Fu, Quanhong Ou, Kunpeng Gao, Shi-Qing Man, Jie Guo, Yingkai Liu
MATERIALS SCIENCE AND ENGINEERING C-MATERIALS FOR BIOLOGICAL APPLICATIONS
(2018)
Article
Chemistry, Physical
Junqi Tang, Chongyi Zeng, Yaqin Wang, Zhiwen Lin, Shi-Qing Man
Article
Chemistry, Multidisciplinary
Junqi Tang, Quanhong Ou, Haichun Zhou, Limin Qi, Shiqing Man
Article
Environmental Sciences
Ang Ma, Weiye Yang, Kunpeng Gao, Junqi Tang
Summary: This study demonstrates the synthesis of monocrystalline concave gold nano-arrows (AuCNAs) using over-growth method and the influence of silver ion concentration on the morphology. The prepared AuCNAs catalyst shows excellent catalytic activity compared to gold nanorods (AuNRs), with higher reaction rate constants and turnover frequency.
Article
Chemistry, Multidisciplinary
Ang Ma, Weiye Yang, Hao Yan, Junqi Tang
Summary: This study successfully synthesized size-controlled single-crystal gold nanoplates using EDTA and hydroxide anions under hydrothermal conditions. The reaction temperature, amount of EDTA, and hydroxyl anions were found to significantly affect the morphology and size distribution of the gold nanoplates. The single-crystal gold nanoplates exhibited excellent catalytic activity and recyclability, indicating their potential for heterogeneous catalysis applications.
Article
Spectroscopy
Xujing Yuan, Linlin Ge, Haichun Zhou, Junqi Tang
Summary: Gold nanostructures, particularly isotropic spherical gold nanoparticles (AuNPs), have been extensively studied for their catalytic activity in heterogeneous catalytic processes. In this study, the influence of size, composition, and surface capping agents on the catalytic activity of AuNPs in reduction reactions was investigated. The results showed that the catalytic activity of AuNPs decreases with increasing size, while the presence of anisotropic AuNPs did not significantly affect the catalytic activity of AuNPs with tartrate as the reducing agent. Additionally, silver was found to enhance both the monodispersity and catalytic activity of small AuNPs. Overall, this study provides valuable insights into the factors that influence the catalytic activity of AuNPs and expands the potential applications of gold-based catalysts and AuNPs in various fields.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
Hao Yan, Quanhong Ou, Ang Ma, Junqi Tang
Summary: Hollow cubic silver chloride and gold-silver alloy hybrid nanocages (AgCl-AuAg HNCs) were synthesized using silver chloride as a sacrificial template. The particle size and surface plasmon resonance (SPR) peak of AgCl-AuAg HNCs can be tunable with different molar ratio of AgNO3 and HAuCl4. The synthesized AgCl-AuAg HNCs exhibited excellent catalytic properties and can be applied in water pollution control and environmental detection applications.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Optics
Haichun Zhou, Jie Guo, Kun Xu, Zhe Li, Junqi Tang, Shiqing Man
Article
Materials Science, Multidisciplinary
Tang Junqi, Ou Quanhong, Fu Xuewen, Wang Yaqin, Lin Zhiwen, Man Shiqing
RARE METAL MATERIALS AND ENGINEERING
(2017)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
