Article
Materials Science, Paper & Wood
Saija Vaisanen, Rubina Ajdary, Michael Altgen, Kaarlo Nieminen, Kavindra K. Kesari, Janne Ruokolainen, Orlando J. Rojas, Tapani Vuorinen
Summary: Cellulose utilization often requires its dissolution in aqueous NaOH, but limitations such as low temperature and concentration are present. The addition of ZnO aids cellulose dissolution and prevents self-aggregation. This study proposed a new structure for cellulose dissolved in aqueous NaOH-ZnO based on Raman spectroscopic studies and TEMPO+-reactivities.
Article
Chemistry, Medicinal
Radu Cercel, Mirela Paraschiv, Cristina Stefania Florica, Monica Daescu, Adelina Udrescu, Romeo C. Ciobanu, Cristina Schreiner, Mihaela Baibarac
Summary: New aspects of the photodegradation of ampicillin are explored using photoluminescence, Raman scattering, and FTIR spectroscopy. The photoluminescence studies reveal that the presence of excipients and an alkaline medium amplifies the photodegradation of ampicillin. The emergence of new compounds during the photodegradation process is highlighted by changes in the UV-VIS spectra, absorbance ratio of IR bands, and Raman line intensities. A chemical mechanism for the photodegradation of ampicillin in an alkaline medium is proposed.
Article
Polymer Science
Ewelina Nowak, Edyta Chlopocka, Miroslaw Szybowicz, Alicja Stachowiak, Wojciech Koczorowski, Daria Piechowiak, Andrzej Miklaszewski
Summary: This paper examines the properties of ZnO layers grown using different aminoalcohols at different concentration rates, and discusses the influence of the stabilizer on the morphology and optical properties of the samples. By comparing the role of different aminoalcohols in structure formation, it provides reference for the preparation of ZnO samples for specific applications.
Article
Biochemistry & Molecular Biology
N'ghaya Toulbe, Ion Smaranda, Catalin Negrila, Cristina Bartha, Corina M. Manta, Mihaela Baibarac
Summary: The effect of sodium thiosulfate (ST) on the photodegradation of azathioprine (AZA) was studied using various spectroscopic techniques. The results showed the emergence of new compounds during the photodegradation process, which were confirmed through different experimental methods.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Spectroscopy
Reshma P. Radhakrishnan, Arun K. Prasad
Summary: In this study, a multi-modal approach was used to investigate the sensing mechanism of NH3 gas by V2O5 nanoparticles in ambient air. The results showed that V2O5 nanoparticles with an average size of 49 nm exhibited a superior sensor response towards 1 ppm of NH3 gas. The presence of NH3 induced electron doping, resulting in conduction band filling and an increase in the optical band gap. The vanadyl oxygen site was found to be the most active in the sensing process.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2023)
Article
Materials Science, Multidisciplinary
T. S. Soliman, M. F. Zaki, M. M. Hessien, Sh. I. Elkalashy
Summary: This study aimed to synthesize BaTiO3 nanocrystalline particles using the tartrate precursor process, and then prepare nanocomposite films with PVA. Analysis using XRD and FTIR showed complex interactions between BaTiO3 nanoparticles and the PVA matrix. As the concentration of BaTiO3 nanoparticles in the PVA matrix increased, the optical band gap decreased while the Urbach energy increased.
Article
Chemistry, Analytical
Hongyi Li, Xiaokun Wen, Yadan Ding, Guorui Wang, Hancheng Zhu, Junping Liu, Huiying Zhao, Xia Hong
Summary: A dual-mode immunoassay strategy based on CdS nanoparticles was developed, which has both photoluminescent and multi-phonon resonance Raman scattering properties. This strategy enables sensitive and specific detection of human immunoglobulin G (HIgG). It demonstrates advantages in detection sensitivity and working range compared to previous methods, with good stability and repeatability.
Article
Chemistry, Multidisciplinary
Sidra Kanwal, Muhammad Tahir Khan, Nasir Mehboob, Mongi Amami, Abid Zaman
Summary: Pure ZnO and Cu, Co co-doped ZnO nanoparticles were synthesized by co-precipitation method. The structural analysis showed hexagonal wurtzite structure, and the crystallite size and surface morphology varied with doping concentrations. Fourier transform infrared spectra and UV-visible absorption spectra indicated the influence of doping concentrations on absorption characteristics and energy band gaps. Vibrating sample magnetometer study revealed the transition from diamagnetic behavior to ferromagnetic behavior for different doping concentrations. This study provides the possibility of preparing materials with room temperature ferromagnetism.
Article
Chemistry, Multidisciplinary
Rongfu Zhou, Litian Lin, Hongting Zhao, Tingting Deng, Jingwei Li
Summary: This study designed and synthesized Ca8Mg3Al2Si7O28 phosphors doped with Ce3+ and Eu2+ for highly sensitive optical thermometry. Analysis of the structure and luminescent properties showed that the emission color can be tuned at different doping levels and temperatures for temperature measurement. The ratiometric fluorescence intensity of Eu2+ to Ce3+ provided sensitivity to temperature readout.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Physics, Applied
Huaixiu Xu, Tianyuan Liang, Wenjie Ma, Xuan Ji, Ruonan Miao, Jiyang Fan
Summary: The research reveals different types of stoichiometry-sensitive emission bands in CuInSe2 quantum dots, showing a unique relationship between photoluminescence intensity and excitation power that is far longer than usual interband transition lifetimes. Multiple defects-involved electron transition processes are uncovered.
APPLIED PHYSICS EXPRESS
(2021)
Article
Nanoscience & Nanotechnology
Romain Platel, Etienne Palleau, Louis Vaure, Simon Raffy, Francois Guerin, Celine Nayral, Fabien Delpech, Laurence Ressier
Summary: The microimprinting technology proposed here offers a new method for directly tagging the surface of an object, verifying products and storing traceability data and emitting optical signals, which can be used on various surfaces and materials, and is suitable for a variety of quantum dots. It can be used manually or implemented in a production line, and the key experimental parameters influencing signal contrast are investigated, demonstrating technical capabilities through various tagging use cases.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Katherine E. Shulenberger, Sophie C. Coppieters 't Wallant, Megan D. Klein, Alexandra R. McIsaac, Tamar Goldzak, David B. Berkinsky, Hendrik Utzat, Ulugbek Barotov, Troy Van Voorhis, Moungi G. Bawendi
Summary: A spectrally resolved correlation method was developed to study the triply excited state, enabling direct measurements of the recombination pathway for the triexciton. It was found that for core-shell CdSe-CdS nanocrystals, triexciton emission arises exclusively from the band-edge S-like state. Time-dependent density functional theory and extended particle-in-a-sphere calculations show that reduced carrier overlap induced by the core-shell heterostructure can account for the lack of emission observed from the P-like state. These results provide insights for potential control of nanocrystal luminescence using core-shell heterostructures.
Article
Biochemistry & Molecular Biology
Ilia Litvinov, Anna Salova, Nikolay Aksenov, Elena Kornilova, Tatiana Belyaeva
Summary: In this study, the photophysical characteristics of core/shell InP/ZnS quantum dots (InP-QDs) were analyzed in cell culture medium, salt solutions, and directly in the cells. It was found that InP-QDs were internalized into endolysosomes in HeLa and A549 cells with similar dynamics to Cd-based QDs, but the two cell lines accumulated them differently. InP-QDs were reliably detected in the endosomes despite their low quantum yields. Factors such as cell culture medium, acidic pH, and salt solutions were found to affect the photoluminescence lifetime of InP-QDs. The scatter between endosomes in the same cell was observed, indicating the complex impact of these factors on the state of InP-QDs. The toxicity of InP-QDs for both cell lines at concentrations higher than 20 nM was demonstrated.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Nanoscience & Nanotechnology
E. Hourdakis, A. Bardakas, A. Segkos, S. Tsilivaki, S. Gardelis, C. Tsamis
Summary: In this work, we have demonstrated a two-pixel solid-state photoluminescent device that can emit white light covering the entire visible spectrum from 380 nm to 800 nm. The combination of porous Si, hydrothermally grown ZnO, and carbon quantum dots enables independent actions of porous Si and ZnO, with carbon quantum dots deposited on top of the entire device. The use of standard Si processing techniques allows for cost-effective and environmentally safe production.
Article
Chemistry, Inorganic & Nuclear
Chuqiao Wu, Shuting Zhang, Yuhui Zheng, Aiqi Wang, Qiming Zhao, Wenjie Sun, Wanqiang Liu, Chenggang Long, Qianming Wang
Summary: In this article, a solvent-type passivation (STP) strategy is introduced to achieve better control and reproducibility of sulfur dots by using short-chain molecular species instead of polyethylene glycol (PEG) as the capping agent. The strategy does not require PEG or any other capping agent, and the surface defects of sulfur dots are passivated by sodium ethoxide generated through the direct reaction of ethanol with NaOH. The sulfur dots obtained through this strategy show self-quenching resistant feature in the solid state and an extended fluorescence band up to 645 nm.
INORGANIC CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Tongyu Han, Haifeng Shi, Yigang Chen
Summary: In this study, a novel S-scheme system was built by combining CuO with BiVO4 to activate PMS for antibiotic degradation. The system exhibited excellent visible light absorption performance and remarkable charge separation ability, suggesting its potential application in enhancing PMS activation and purifying antibiotics in water.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Linlin Zhou, Tao Yang, Chunyu Guo, Kang Wang, Enhui Wang, Laipan Zhu, Hailong Wang, Sheng Cao, Kuo-Chih Chou, Xinmei Hou
Summary: Piezoelectric silicon carbide (SiC) has been considered for various applications due to its superior properties. However, its brittleness and unsatisfactory piezoelectric response have limited its use. In this study, PVDF/6H-SiC composite fiber films were fabricated and used for assembling high-performance energy harvesters and sensors. The results showed significant improvements in piezoelectric response and sensitivity compared to pure PVDF films. First-principles calculation and finite element analysis confirmed the effect of SiC nanoparticles on the composite film.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Y. F. An, X. P. Chen, L. Mei, P. Ren, D. Wei, W. Q. Cao
Summary: This study systematically investigates the precipitation sequence of Fe-28Mn-11Al-1C-5Ni austenitic low-density steel and its influence on mechanical properties. The results reveal the transformation pathway of kappa' -carbides and B2 particles under different aging conditions. This research is meaningful for guiding the design of new generation dual-nano precipitation austenitic lightweight steel.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Lei Yang, Tingkai Zhao, Abdul Jalil, Huijun Luo, Tao Jiang, Yuan Shu, Yazhou Yin, Weiyu Jia
Summary: In this study, a strategy utilizing oxygen vacancy concentration modulation was used to successfully grow semiconducting single-walled carbon nanotubes (s-SWCNTs) with narrow diameters. The Fe0.01Mg0.99O/CeO2(3) catalyst was employed to provide oxygen vacancies, allowing for selective etching of chemically active carbon nanotube caps during the growth process. The optimized conditions resulted in high purity s-SWCNTs with uniform diameters.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Letter
Materials Science, Multidisciplinary
Lingjun Xu, Pruch Kijkla, Sith Kumseranee, Suchada Punpruk, Tingyue Gu
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
X. P. Hu, Y. H. Zhang, C. B. Liu, H. Z. Cui
Summary: In this study, a novel polyaniline (PANI) nanosheet with barrier and passivation functions was synthesized, and its interaction with polymeric resin was enhanced by polydopamine (PDA) wrapping. The composite coating with incorporated PANI@PDA nanosheets showed improved corrosion resistance by providing a longer penetration path and inducing the formation of a passivation film on the metal substrate.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Yan Zhang, Xuehua Liu, Zhiqiang Guo, Chenyu Jia, Feng Lu, Zirui Jia, Guanglei Wu
Summary: In this study, a self-assembling-etching-anchoring growth method was proposed to prepare MXene@Co electromagnetic wave absorbing materials. The hollow structure design and surface anchored growth of magnetic Co particles significantly enhanced the wave absorption performance of the absorber.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Yajing Ren, Yunfeng Li, Guixu Pan, Ning Wang, Yan Xing, Zhenyi Zhang
Summary: Photocatalytic technology utilizing sunlight as a driving force can convert solar energy into other energy sources for storage and use. CdS, as a typical reducing semiconductor, has attracted attention in photocatalysis due to its suitable bandgap and strong reducing ability. However, the photocatalytic performance of CdS is limited by carrier recombination and photocorrosion. Therefore, CdS has been widely developed as a reducing photocatalyst in constructing S-scheme heterojunctions to overcome these limitations.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Diao-Feng Li, Chun-Guang Bai, Zhi-Qiang Zhang, Hui-Bo Zhang, Nan Li, Jian Zhao
Summary: A novel compliant spinal fixation based on compliant mechanisms is designed to effectively reduce stress-shielding effect and adjacent segment degeneration (ASD), but it requires high properties of the used materials. Bulk metallic glasses (BMGs), as young biomaterials, demonstrate excellent comprehensive properties, making them attractive for compliant spinal fixation. In this study, the large deflection deformation behaviors of Zr61Ti2Cu25Al12 (at.%, ZT1) BMG beam were systematically investigated, including elastic, yielding, and plastic deformations. The theoretical nonlinear analytical solution curve predicts the load-deflection relation within the elastic deformation regime and assists in capturing the yielding event, serving as a powerful design tool for engineers. To accurately capture the beginning of the yielding event in biomedical implant applications, the concept of bending proof strength (sigma p,0.05%) with tiny permanent strain of 0.05% was proposed and determined, which is significant for setting the allowable operating limits of the basic flexible elements. The plastic deformation driven by the bending moment can be classified into two stages: the initial stage characterized by nucleation and intense interaction of shear bands, and the second stage dominated by the progressive propagation of shear bands and emergence of shear offsets. The plasticity of BMG beam structures depends on the BMG's inherent plastic zone size (rp), and when the half beam thickness is less than that of rp, the plastic deformation of BMGs behaves in a stable manner, effectively serving as the margin of safety.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Yanlin Li, Zhu Ma, Shanyue Hou, Qianyu Liu, Guangyuan Yan, Xiaoshan Li, Tangjie Yu, Zhuowei Du, Junbo Yang, Yi Chen, Wei You, Qiang Yang, Yan Xiang, Shufang Tang, Xuelin Yue, Meng Zhang, Wenfeng Zhang, Jian Yu, Yuelong Huang, Jiale Xie, Chun Tang, Yaohua Mai, Kuan Sun
Summary: This paper provides an overview of hydrogen progress from solar energy to solar cells, with a focus on photovoltaic-electrolysis and photoelectrochemical/photovoltaic systems. Both systems have achieved a solar-to-hydrogen efficiency of over 10% and show great potential for large-scale application. The challenges and opportunities in this field, including configuration design, electrode materials, and performance evaluation, are summarized. The paper also analyzes and presents perspectives on the potential commercial application and further scientific research for the development of solar-to-hydrogen.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
L. K. Huang, F. Liu, M. X. Huang
Summary: The bainite transformation in medium Mn steels has been experimentally and theoretically studied, and it has been found that the transformation kinetics is slow. However, the introduction of dislocations can significantly accelerate the transformation rate. A new "carbon depletion mechanism" is proposed to explain the role of dislocations in the acceleration of bainite transformation, and a physical model is developed to quantitatively understand the kinetics of bainite transformation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Review
Materials Science, Multidisciplinary
Jing Qiao, Lutong Li, Jiurong Liu, Na Wu, Wei Liu, Fan Wu, Zhihui Zeng
Summary: Rare earth plays a crucial role in electromagnetic wave absorption materials, and the strategies of doping rare earth elements and constructing rare earth oxide composites are important for the fabrication of high-efficiency electromagnetic wave absorption materials. This review provides a comprehensive summary of the research background, classification, features, progress, and future development of rare earth electromagnetic wave absorption materials, offering guidance for future development.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Jiacheng Ge, Yao Gu, Zhongzheng Yao, Sinan Liu, Huiqiang Ying, Chenyu Lu, Zhenduo Wu, Yang Ren, Jun-ichi Suzuki, Zhenhua Xie, Yubin Ke, Jianrong Zeng, He Zhu, Song Tang, Xun-Li Wang, Si Lan
Summary: Fe-based metallic glasses are promising materials in the fields of advanced magnetism and sensors. This study proposes a novel approach to tailor the amorphous structure through liquid-liquid phase transition, and provides insights into the correlation between structural disorder and magnetic order. The results show that the liquid-liquid phase transition can induce more locally ordered nanodomains, leading to stronger exchange interactions and increased saturation magnetization. The increased local heterogeneity also enhances magnetic anisotropy, resulting in a better stress-impedance effect.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Hao Yu, Xin Kou, Xueqing Zuo, Ding Xi, Haijun Guan, Pengfei Yin, Lijia Xu, Yongpeng Zhao
Summary: Metal-organic frameworks derived composites are promising EMW absorbers. Cation substitution can improve their absorption performance by regulating morphology and atomic space occupation. However, the mechanisms of how cation substitution affects EMW absorption performance are still not well understood. In this study, imidazolic MOFs were fabricated and tailored by cation substitution strategy to prepare porous composites. The samples showed optimal reflection loss and effective absorption bandwidth values under low filling rate and thin thickness conditions. The intercoupling between multiple atoms and the porous structure introduced by cation substitution contribute to the improved absorption performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
Lina Wang, Peiyi Yan, Huairui Chen, Zhuo Li, Shu Jin, Xiaoxiang Xu, Jun Qian
Summary: The narrow bandgap semiconductor MgIn2S4 has been grown onto In2O3 nanofibers using an in situ growing method. The resulting MgIn2S4-In2O3 hybrid nanofibers exhibit strong visible light absorption and intimate MgIn2S4/In2O3 heterointerfaces, leading to highly efficient photocatalytic disinfection of Escherichia coli.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2024)