Article
Chemistry, Physical
Van-Tuan Hoang, Lemma Teshome Tufa, Jaebeom Lee, Mai Quan Doan, Nguyen Ha Anh, Van Tan Tran, Anh-Tuan Le
Summary: This study investigates the surface-enhanced Raman spectroscopy (SERS) performance of Ag@Fe3O4 core-shell nanoparticles with different sizes. The smallest nanoparticles with thin shell and high shell porosity exhibit significantly improved mass diffusion and SERS performance, making them ideal substrates for highly sensitive detection of organic pollutants. Quantitative SERS measurements using the Ag@Fe3O4 nanoparticles were successfully demonstrated with methylene blue (MB) as probe analytes.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)
Article
Spectroscopy
Mingchun Lv, Hongbin Pu, Da-Wen Sun
Summary: This study constructed a new SERS substrate Fe3O4@UiO-66(Zr)@Ag nanoparticles (FUAs) with excellent SERS detection sensitivity, uniformity, reproducibility, and stability. It exhibited a high Raman enhancement factor (5.62 x 106), low limit of detection (LOD, 2.11 x 10-11 M), and RSD (12.41%) for 4-NBT, while maintaining 81% SERS activity within 60 days. FUAs took advantage of the strong affinity of UiO-66(Zr) for organophosphorus pesticides (OPs) to achieve trace OPs detection, showing potential for detecting OPs in foods.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Chemistry, Analytical
Chao Liu, Hui Wang, Shengmin Xu, Hongbao Li, Yilin Lu, Chuhong Zhu
Summary: In this study, Fe3O4@SiO2@Au three-layer core/shell nanoparticles were synthesized and modified with 4-mercaptopyridine to form a surface-enhanced Raman scattering (SERS) sensor. The sensor can easily capture mercury ions in water and evaluate their concentration based on the spectral changes of 4-mercaptopyridine. The SERS sensor shows good stability, accuracy, and anti-interference ability, and has the potential to detect actual samples.
Article
Chemistry, Analytical
Bing Liu, Hanyu Tang, Qian Liu, Wenwen Wang, Haitao Li, Shiya Zheng, Fei Sun, Xiangwei Zhao
Summary: In this study, a novel surface-enhanced Raman scattering-based Western blot (SERS-WB) was proposed for accurate quantitative detection of low-abundance proteins. SERS nanotags were used as quantitative labels of proteins, and the target protein on the membrane could be directly identified by colorimetric signal due to the aggregation effect of nanoparticles.
Article
Chemistry, Multidisciplinary
M. Xing, Jeotikanta Mohapatra, J. Elkins, D. Guragain, S. R. Mishra, J. Ping Liu
Summary: New findings of exchange bias and enhanced magnetic coercivity were reported in iron carbide/magnetite core/shell nanoparticles, attributed to the structural changes during the Verwey transition of the Fe3O4 shell and the uniaxial anisotropy of the monoclinic phase.
Article
Chemistry, Physical
A. Khalid, R. M. Ahmed, Mohamed Taha, T. S. Soliman
Summary: Magnetic iron oxide (Fe3O4) and Fe3O4 @SiO2 core-shell nanoparticles were prepared and their optical properties were studied. Three different methods were used to determine the optical gap energy of the nanoparticles, and it was found that Fe3O4 @SiO2 NPs have higher gap energy values compared to Fe3O4 NPs and SiO2 NPs. The Fe3O4 @SiO2 NPs also exhibited high values of optical oscillator strength and third-order nonlinear optical susceptibility, making them suitable for applications in nonlinear optics. The synthesized Fe3O4 @SiO2 core-shell nanomaterials with enhanced optical parameters are considered as promising candidates for nonlinear optical applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Nanoscience & Nanotechnology
Nagarajan Padmavathy, Indranil Chakraborty, Abishek Kumar, Anindo Roy, Suryasarathi Bose, Kaushik Chatterjee
Summary: A customized polymer composite has been developed that provides electromagnetic shielding, protects medical electronics, and has antibacterial properties.
ACS APPLIED NANO MATERIALS
(2022)
Article
Engineering, Environmental
Ting Wang, Shuangpeng Wang, Zehua Cheng, Jinchao Wei, Lele Yang, Zhangfeng Zhong, Hao Hu, Yitao Wang, Bingpu Zhou, Peng Li
Summary: Pesticide residues pose a significant threat to human health and the environment, driving the need for rapid and effective detection methods. Core-shell nanostructures as novel SERS substrates have been widely utilized in rapid pesticide detection research. Understanding and monitoring pesticide residues can be improved through the classification and evaluation of different core-shell nanostructures and early-warning analysis.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Optics
Naheda H. A-Jarah, Ahmed S. Wasfi, S. M. Hamidi
Summary: This study aims to control the performance of random lasers by using magneto-plasmonic Fe3O4@Au and Au@Fe3O4 core shell nanoparticles as scatterer points. The results show that the laser efficiency of the samples is improved when an external magnetic field is applied.
OPTICS AND LASER TECHNOLOGY
(2022)
Article
Nanoscience & Nanotechnology
Yuanyuan Zhang, Xueyin Sun, Yong Yuan, Wenzhu Shao, Liang Zhen, Jiantang Jiang
Summary: Fe/Fe3O4 composite particles with mesoporous silica (mSiO2) shells were prepared via solvothermal reaction combined with hydrogen-thermal reduction. The addition of mSiO2 created a well-ventilated framework that maintained the dispersion of fine Fe particles. The conversion of Fe3O4 to Fe nanoparticles enhanced the ferromagnetic loss, while the interface of Fe3O4/Fe/mSiO2 induced an intensified dielectric loss. The Fe/Fe3O4@mSiO2 showed excellent electromagnetic wave-absorbing performances as fillers for electromagnetic absorption materials.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Chemical
Jie Yu, Dan Zhu, Cong Qi, Wenjie Zhang
Summary: To enhance the efficiency of solar photothermal conversion, core-shell Ag@Fe3O4 nanoparticles with strong absorbance were synthesized and the resulting nanofluids showed good stability, photothermal properties, and recoverability. The impact of nanoparticle concentration, light intensity, and nanofluid depth on photothermal performance and evaporation efficiency was investigated. The results revealed that the Ag@Fe3O4 nanoparticles exhibited surface plasmon resonance (SPR) effect, effectively converting photon energy to heat energy. Compared to deionized water, a concentration of 200 ppm led to a temperature increase of 21.52% and an evaporation increase of 117.42%. Increasing nanofluid depth led to higher temperature gradient and heat loss, while increasing light intensity improved evaporation volume but had a negative effect on sensible heat efficiency.
Article
Chemistry, Multidisciplinary
Chun-Rong Lin, Oxana S. Ivanova, Dmitry A. Petrov, Alexey E. Sokolov, Ying-Zhen Chen, Marina A. Gerasimova, Sergey M. Zharkov, Yaw-Teng Tseng, Nicolay P. Shestakov, Irina S. Edelman
Summary: Fe3O4@SiO2 core-shell nanoparticles were synthesized and functionalized for studying their magnetic, structural, and adsorption properties. The magnetic core of the nanoparticles showed nanocrystalline structure with an amorphous silica shell, and the nanoparticles exhibited high saturation magnetization. The adsorption studies on three dyes showed that the nanoparticles followed pseudo-second order kinetics and had maximum adsorption capacity for Congo red according to the Langmuir isotherm.
Article
Chemistry, Multidisciplinary
Xifang Chen, Yue Zhou, Hongwen Han, Xiaoyu Wang, Lei Zhou, Zao Yi, Zhenjin Fu, Xianwen Wu, Gongfa Li, Liangcai Zeng
Summary: This study investigated the effects of carbon shell coating on the optical and magnetic properties of small size Fe3O4 nanoparticles. The results showed that carbon coating can enhance the absorption intensity in the UV-visible light region and reduce surface uniaxial anisotropy, leading to a decrease in the average blocking temperature.
MATERIALS TODAY CHEMISTRY
(2021)
Article
Chemistry, Physical
Zhouyu Tong, Zijian Liao, Yanyan Liu, Mingliang Ma, Yuxin Bi, Weibo Huang, Yong Ma, Mingtao Qiao, Guanglei Wu
Summary: Hierarchical structured Fe3O4/Fe@C@MoS2 nanofibers with excellent microwave absorption properties were successfully prepared in this study, providing a new insight for the design of high-performance microwave absorption materials in the future.
Article
Biochemical Research Methods
Yudong Lu, Yisheng Lin, Zuci Zheng, Xiaoqiong Tang, Jinyong Lin, Xiujie Liu, Mengmeng Liu, Guannan Chen, Sufang Qiu, Ting Zhou, Yao Lin, Shangyuan Feng
BIOMEDICAL OPTICS EXPRESS
(2018)
Article
Chemistry, Multidisciplinary
Yudong Lu, Ting Zhou, Ruiyun You, Yang Wu, Huiying Shen, Shangyuan Feng, Jingqian Su
Article
Chemistry, Multidisciplinary
Xiujie Liu, Mengmeng Liu, Yudong Lu, Changji Wu, Yunchao Xu, Duo Lin, Dechan Lu, Ting Zhou, Shangyuan Feng
Article
Biophysics
Xueliang Lin, Yunyi Wang, Lingna Wang, Yudong Lu, Jin Li, Dechan Lu, Ting Zhou, Zufang Huang, Jun Huang, Huifang Huang, Sufang Qiu, Rong Chen, Duo Lin, Shangyuan Feng
BIOSENSORS & BIOELECTRONICS
(2019)
Article
Nanoscience & Nanotechnology
Fengping Lin, Min Fan, Yuqin Liao, Xinyu Wei, Jingjing Huang, Ting Zhou, Yudong Lu
Article
Chemistry, Analytical
Ting Zhou, Dechan Lu, Qiutian She, Cairou Chen, Jingbo Chen, Zufang Huang, Shangyuan Feng, Ruiyun You, Yudong Lu
Summary: A two-dimensional surface enhanced Raman spectroscopy (SERS) substrate was successfully prepared for trace detection of Interleukin-6 (IL-6) in plasma, by capturing glycoproteins in serum and using nanoprobes modified with IL-6 antibody. The method can achieve quantitative detection of IL-6 with a detection limit of 5 pg/mL and an applicable range of 0.5-50000 pg/mL.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Yujia Ying, Huilin Li
Summary: Enzymes play a crucial role as biological catalysts in accelerating biochemical reactions in living organisms. This study proposes a convenient method for monitoring enzymatic catalytic processes using native top-down mass spectrometry. By exploring the heterogeneity of the chymotrypsin sample and using tandem mass spectrometry, the researchers were able to monitor covalent and noncovalent enzymatic complexes, substrates, and products during catalysis. The results demonstrate that this method has the potential to be a promising tool for characterizing biocatalysts.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Kang Yang, Shuaibo Shi, Jinyu Wu, Shaolong Han, Shengdi Tai, Shishen Zhang, Kun Zhang
Summary: H2O and D2O are important analogues closely related to various industries and monitoring fields. This study successfully distinguishes and detects H2O and D2O by designing a novel eu(III)-macrocycle with dual emitters, Eu-2a, and conducting fluorescence titration experiments.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Julia Kuligowski, Alvaro Perez-Rubio, Marta Moreno-Torres, Polina Soluyanova, Judith Perez-Rojas, Ivan Rienda, David Perez-Guaita, Eugenia Pareja, Ramon Trullenque-Juan, Jose Castell, Marcha Verheijen, Florian Caiment, Ramiro Jover, Guillermo Quintas
Summary: This study introduces a novel variable selection approach called cluster PLS (c-PLS) to assess the joint impact of variable groups selected based on biological characteristics on the predictive performance of a multivariate model. The usefulness of c-PLS is shown using miRNomic and metabolomic datasets obtained from the analysis of liver tissue biopsies.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Meixue Lai, Lijie Zhong, Siyi Liu, Yitian Tang, Tingting Han, Huali Deng, Yu Bao, Yingming Ma, Wei Wang, Li Niu, Shiyu Gan
Summary: This study presents a method for constructing wearable sweat electrolyte sensors using carbon fiber-based solid-contact ion-selective electrodes (SC-ISEs). By using carbon fibers extracted from commercial cloth as electrode material, the cost and reproducibility issues of flexible SC-ISEs were addressed. The results showed that the carbon fiber-based SC-ISEs exhibited reversible voltammetric and stable impedance performances, and had high reproducibility of standard potentials between normal and bending states.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Yang, Ying Liu, Min Deng, Peipei Wang, Dan Cheng, Songjiao Li, Longwei He
Summary: A near-infrared fluorescent probe has been developed to accurately measure the levels of peroxynitrite (ONOO-) in the endoplasmic reticulum (ER) in acute lung injury (ALI). The probe demonstrated rapid response, high selectivity, good sensitivity, and enhanced fluorescence intensity in response to ONOO-. It was successfully used to detect changes in ONOO- levels and showed significant increases in an ALI cell model and an ALI mouse model.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yanping Wang, Yuemei Chen, Kejun Li, Jinrong Zhou, Xin Yuan, Mei Zhang, Ke Huang
Summary: In this work, a portable analytical system based on point discharge chemical vapor generation atomic emission spectrometry (PD-CVG-AES) coupling with gold filament enrichment was designed. The highly sensitive analysis of Hg2+ indirectly realized the detection of ascorbic acid (AA). The measurement is based on the fact that Ag+ can decrease the concentration of Hg2+ by forming Ag-Hg amalgam in the presence of the reductant SnCl2, while AA can pre-reduce Ag+ to Ag0, leading to the generation of silver nanoparticles (Ag NPs). The developed novel analytical strategy broadens the application of microplasma-based AES and offers a higher level of sensitivity compared to current AA detection techniques.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yundi Huang, Bo Song, Kaiwen Chen, Deshu Kong, Jingli Yuan
Summary: This study developed two lysosome-targetable background-free TGL probes for efficient and accurate detection of 1O2, which can be used for monitoring endogenous 1O2 concentrations in lysosomes and discriminating variability induced by different photosensitizers. Furthermore, a smart luminescent sensor film was successfully prepared for on-site 1O2 production detection during PDT processes, offering a promising clinical monitoring tool for skin diseases.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Wei Lang, Jia-Mei Qin, Qian-Yong Cao
Summary: A novel polymer-based probe P1 was successfully synthesized for fluorescently ratiometric sensing of H2S with high selectivity and sensitivity. A smartphone sensing platform was constructed to conduct visual quantitative detection of H2S. P1 can be employed in evaluating the level fluctuations of H2S in living cells, testing water samples/wine samples, and monitoring food freshness.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Yuanyuan Qin, Shuda Liu, Shuyun Meng, Dong Liu, Tianyan You
Summary: The study developed a split aptamer-based sandwich-type ratiometric biosensor for the detection of 17 beta-estradiol (E2) using photoelectrochemical and electrochemical assays. The biosensor utilized split aptamer fragments to recognize E2 and trigger a hybridization chain reaction, resulting in the production of double-stranded DNA labeled with CdTe quantum dots. This DNA complex was able to sensitize CdTe quantum dots and generate response signals for E2 detection. The developed biosensor demonstrated high sensitivity and accuracy with two linear ranges and low detection limits.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Siriwan Teepoo, Jongjit Jantra, Khaunnapa Panapong, David Taiwo Ajayi
Summary: A novel immunochromatographic assay based on hyperbranched Au plasmonic blackbodies with a smartphone readout was developed for rapid and sensitive detection of leucomalachite green residues in fish and shrimp products.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Andrea L. Larraga-Urdaz, Borja Moreira-Alvarez, Jorge Ruiz Encinar, Jose M. Costa-Fernandez, Maria Luisa Fernandez-Sanchez
Summary: A major challenge in the 21st century is the development of point-of-care diagnostic tools. In this study, a highly sensitive and simple bioassay using AuNPs and MNAzymes was developed for rapid detection and quantification of miRNA-4739. The proposed strategy shows potential for breast cancer diagnosis.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Xiaohan Zhao, Anyu Wang, Lingzi Zhai, Jiuhe Gao, Sizhe Lyu, Yingshan Jiang, Tian Zhong, Ying Xiao, Xi Yu
Summary: A novel method using polystyrene-coated magnetic nanoparticles for extracting monohydroxy polycyclic aromatic hydrocarbons from urine samples was investigated. The proposed method is simple, sensitive, and efficient, with desirable sensitivity for analyzing low-abundance metabolites in large volumes of complex urine samples.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Ke Quan, Yuqing Zeng, Wenke Zhang, Fengfeng Li, Mengjiao Li, Zhihe Qing, Linlin Wu
Summary: In this study, a visual and reusable biosensor was developed for detecting substrates that are closely associated with human physiological health. The immobilized oxidase showed higher stability and sensitivity under harsh conditions, enabling reliable detection of substrates in complex fluids.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Dongjuan Wang, Xiuqian Ding, Jinling Xie, Juan Wang, Guanhao Li, Xin Zhou
Summary: In this study, a three-in-one sensor was developed for real-time detection of biogenic amines (BAs) with high sensitivity and selectivity. The sensor showed multimodal responses and could be used to fabricate portable devices for on-site non-destructive assessment of food spoilage indicators.
ANALYTICA CHIMICA ACTA
(2024)
Article
Chemistry, Analytical
Jinting Meng, Zihao Xu, Shasha Zheng, Hongqun Yang, Tianfu Wang, Hong Wang, Yingwei Zhang
Summary: This study demonstrates the development of a cascade signal amplification system using a multi-pedal DNA walker and strand displacement reactions for the electrochemical detection of miRNA-155. The biosensor exhibited high sensitivity, selectivity, and the potential for clinical applications.
ANALYTICA CHIMICA ACTA
(2024)