Article
Materials Science, Multidisciplinary
Zhicheng Cai, Eunjung Goo, Sunghoon Park
Summary: In this study, SnO2 hollow nanospheres (HNS) were synthesized and decorated with Pd nanoparticles (NPs) to enhance hydrogen sensing performance. The decorated Pd NPs significantly improved the sensor's response to hydrogen gas and its selectivity, increasing hydrogen sensing capabilities.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Chemistry, Analytical
Zhicheng Cai, Sunghoon Park
Summary: The study synthesized porous-structured Pd-decorated In2O3 nanoparticle-embedded SnO2 nanofibers, which showed a 24-times enhancement in sensing performance for 100 ppm hydrogen gas compared to Pd-decorated SnO2 nanofibers.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Myung Sik Choi, Ali Mirzaei, Han Gil Na, Sangwoo Kim, Dong Eung Kim, Kyu Hyoung Lee, Changhyun Jin, Sun-Woo Choi
Summary: This study proposed a method to enhance the gas sensing properties of metal oxide nanowires by preparing Pd metal catalyst surrounded by SnO2-x with structural defects on the surface of SnO2 nanowires. Gas sensing studies demonstrated the promising effects of this approach, showing the usefulness of significantly enhancing the gas sensing properties.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Ming Liu, Caochuang Wang, Pengcheng Li, Liang Cheng, Yongming Hu, Yao Xiong, Shishang Guo, Haoshuang Gu, Wanping Chen
Summary: Research on Pt-decorated SnO2 nanoparticles shows promising room-temperature hydrogen-sensing characteristics when pressed into pellets, and the variations in hydrogen-sensing performance after sintering reveal the potential for transforming low-dimensional MOX nanocrystals into bulk materials with improved robustness and comparable room-temperature gas-sensing characteristics.
Article
Engineering, Electrical & Electronic
Maya Chauhan, Vinod K. Singh
Summary: Metal oxide coated fiber optic sensor is proposed for alcohol sensing. The sensor probe design is based on cladding removed methodology using tapered fiber. The sensing principle relies on refractive index modification of tin dioxide nanoparticles (SnO2-NPs) after contact with isopropanol solution. The sensor shows high sensitivity, reversibility, and repeatability, making it suitable for online and remote alcohol monitoring.
OPTICAL FIBER TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Yijun Yang, Bohee Maeng, Dong Geon Jung, Junyeop Lee, Yeongsam Kim, JinBeom Kwon, Hee Kyung An, Daewoong Jung
Summary: The study focuses on the performance of SnO2 thin film sensors for H-2 gas, revealing that annealed films exhibit higher response and shorter response time.
Article
Chemistry, Multidisciplinary
Hana Park, Su-Jin Yoon, Yun-Sik Nam, Ji Yeong Lee, Yeonhee Lee, Jin Young Kim, Kang-Bong Lee
Summary: A novel gold nanourchin probe with a colorimetric sensing mechanism has been developed for reliable monitoring of H2S.
Article
Chemistry, Physical
Zicheng Cai, Eunjung Goo, Sunghoon Park
Summary: Ethanol sensors with superior performance were fabricated using Au nanoparticles decorated SnO2 hollow nanospheres (Au-SnO2 HNS). The ethanol-sensing response of SnO2 HNS improved 2.7 times when exposed to 100 ppm ethanol gas measured at 250 degrees C, showing selective sensing response towards ethanol gas compared to other VOC gases. The improved sensing properties were attributed to the optimized morphologies of the sensing materials and the catalytic effect of the Au nanoparticles.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Analytical
Peiyu Duan, Huahua Xiao, Zhaoyu Wang, Qingkui Peng, Kaiqiang Jin, Jinhua Sun
Summary: This study successfully synthesized Pd-decorated SnO2 spherical composites using a hydrothermal method and demonstrated improved response and selectivity to low concentration hydrogen with UV irradiation, providing significant implications for future research in hydrogen detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Ceramics
Mengyi Tian, Jun Ren, Chenbo Yin, Junjing Zhou, Shiyun Zhang, Zili Zhang
Summary: The study showed that a high concentration of PS template significantly influences the continuity and H2 sensing performance of porous SnO2 films, with the film containing 0.1 wt% PS microspheres exhibiting the best performance. At 225 degrees C, the response magnitude of the porous 1 mol% Pd-doped SnO2 thin film to 1000 ppm H2 is 93.18, approximately 10.58 times that of the pure sample.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Physical
Xiaojiang Hou, Lu Yang, Kaiming Hou, Hongchang Shi, Lei Feng, Guoquan Suo, Xiaohui Ye, Li Zhang, Yanling Yang
Summary: The study demonstrates that the Mg10Ni10Ce-SnO2 composite exhibits high hydrolytic H-2 generation performance in simulated seawater, with the addition of SnO2 nanotubes significantly enhancing the reaction rate. However, the low yield in distilled water and tap water indicates the significant influence of water quality on the hydrolysis reaction.
GREEN ENERGY & ENVIRONMENT
(2021)
Article
Chemistry, Analytical
Jae-Hun Kim, Ali Mirzaei, Sang Sub Kim, Changkyoo Park
Summary: In this study, a sensitive and selective toluene gas sensor based on SnO2 nanowires (NWs) was fabricated using FS laser irradiation and Pt nanoparticle (NPs) decoration. The FS laser irradiation-induced embossing surface was found to be dominant in determining the gas-sensing behavior, while Pt decoration on the FS laser-irradiated SnO2 NWs further enhanced the sensor response. The gas sensor showed high selectivity towards C7H8 and exhibited promising potential for reliable toluene gas sensing applications.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Lijia Xu, Zhicheng Lin, XingYao Xiong, Huan Cheng, ZhiLiang Kang, Yuchao Wang, Zhijun Wu, Wei Ma, Ning Yang, Yong He, Zhiyong Zou, Mingdan Liu, Jianlong Li, Xin Kou, Yongpeng Zhao
Summary: A one-step solvothermal method was used to co-assemble α-Fe2O3 and SnO2, resulting in a high-performance gas sensor for ammonia detection. The α-Fe2O3@3%SnO2 sensor exhibited a rapid response time of 14 s and a notable sensitivity of 83.9% when detecting 100 ppm ammonia at room temperature. The surface effect provided by SnO2 enhanced the adsorption capacity of α-Fe2O3, while the presence of SnO2 tailored the pore structure and effective surface area of α-Fe2O3, creating multiple channels for ammonia molecules. The N-N heterostructure formed between α-Fe2O3 and SnO2 improved the ammonia sensing performance.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Genrikh N. Gerasimov, Maria I. Ikim, Vladimir F. Gromov, Olusegun J. Ilegbusi, Leonid I. Trankhtenberg
Summary: The study demonstrates the formation of clusters with specific structure and sensory properties in SnO2-In2O3 composites by controlling the SnO2 concentration, and reveals the impact of different synthesis methods on the performance of the composites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Multidisciplinary
M. Boomashri, P. Perumal, Himadri Tanaya Das, V Ganesh, I. S. Yahia
Summary: This study investigates the influence of Ag doping on the SnO2 sensor at room temperature, finding that 3wt% Ag-doped SnO2 shows improved sensitivity towards ammonia gas. Additionally, it was observed that the doping of Ag into the SnO2 lattice affected the crystallization, morphology, optical properties, and gas sensing abilities of the sensor.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Materials Science, Ceramics
Petronela Pascariu, Corneliu Cojocaru, Mihaela Homocianu, Petrisor Samoila, Andrei Dascalu, Mirela Suchea
Summary: Pure TiO2 and La3+-doped TiO2 nanofibers were synthesized by electrospinning and calcination. The nanofibers showed crystalline structure and wide distribution of band-gaps. The optimal conditions for photocatalytic degradation of pollutants were determined to be 0.1% La3+ and 600 degrees C.
CERAMICS INTERNATIONAL
(2022)
Article
Materials Science, Multidisciplinary
Cosmin Romanitan, Ioan Valentin Tudose, Kyriakos Mouratis, Marian Catalin Popescu, Cristina Pachiu, Stelios Couris, Emmanouel Koudoumas, Mirela Suchea
Summary: This study reports the correlation between texture coefficient and electrochromism in vanadium pentoxide nanostructured films. It is found that texture coefficient affects the size of crystalline domains and electrochromic performance, with high texture coefficient facilitating charge insertion and increasing transmittance contrast.
PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
(2022)
Review
Materials Science, Textiles
Narcisa Vrinceanu, Stefan Bucur, Cristina Mihaela Rimbu, Sabina Neculai-Valeanu, Santiago Ferrandiz Bou, Mirela Petruta Suchea
Summary: This minireview presents recent developments in surface nano-structured textiles and their biomedical applications. It summarizes the coatings made of biopolymer films and nanoparticles on different textile substrates for enhanced medical applications, highlighting their role in reducing hospital-acquired infections. Combining metal and metal oxide nanoparticles with biopolymers is an effective technique to generate enhanced antibacterial, virucidal and antifungal properties. This overview emphasizes the need for further research in biomedical textiles, particularly in the areas of simultaneous deposition of nanoparticles-biopolymers, stabilization of nanoparticle dispersions with biopolymers, and the use of metal and metal oxide nanoparticles for antibacterial applications.
TEXTILE RESEARCH JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Ioan Valentin Tudose, Kyriakos Mouratis, Octavian Narcis Ionescu, Cosmin Romanitan, Cristina Pachiu, Marian Popescu, Volodymyr Khomenko, Oksana Butenko, Oksana Chernysh, George Kenanakis, Viacheslav Z. Barsukov, Mirela Petruta Suchea, Emmanouel Koudoumas
Summary: The development of eco-friendly conductive water-based paints for EMI-shielding applications was investigated in this study. Graphene nanoplatelets, polyaniline emeraldine doped with poly(styrene sulfonic acid) or HCl or HBr, and poly(3,4-ethylenedioxythiophene) poly(styrene sulfonic acid) were used as components in water-based paints. The optimized compositions resulted in uniform, homogeneous, and conductive layers with good electrical conductivity and efficient EMI-shielding performance.
Article
Chemistry, Physical
Petronela Pascariu, Corneliu Cojocaru, Petrisor Samoila, Anton Airinei, Niculae Olaru, Aurelian Rotaru, Cosmin Romanitan, Lucian Barbu Tudoran, Mirela Suchea
Summary: This study reports on the optimization of pure TiO2 and Cu/TiO2 nanocomposite photocatalytic fibrous materials. The presence of copper in the nanocomposite triggers sunlight-driven photocatalysis, leading to significant degradation of Amaranth dye under visible-light irradiation. The Cu/TiO2 nanocomposite exhibits excellent photocatalytic activity, achieving a high color removal efficiency.
SURFACES AND INTERFACES
(2022)
Article
Chemistry, Analytical
Florina Silvia Iliescu, Ling Tim Hong, Jin Ming Jaden Toh, Mirela Petruta Suchea, Octavian Narcis Ionescu, Ciprian Iliescu
Summary: Improper foot biomechanics and uneven bodyweight distribution can lead to balance impairments and increased risk of falls. This study presents the development of a user-friendly screening device, the Early Notice Pointer (ENP), based on weighing scale technology. The ENP is designed for at-home measurement of weight-shifting and provides foot and posture triage.
Article
Chemistry, Multidisciplinary
Ioan Valentin Tudose, Kyriakos Mouratis, Octavian Narcis Ionescu, Cosmin Romanitan, Cristina Pachiu, Emil Pricop, Volodymyr H. Khomenko, Oksana Butenko, Oksana Chernysh, Viacheslav Z. Barsukov, Mirela Petruta Suchea, Emmanouel Koudoumas
Summary: This study reported on optimized formulations of alcohol-based conductive paints for electromagnetic interference shielding. The paints formed uniform, opaque layers with good electrical conductivity and efficient shielding performance. Structural and morphological characteristics analysis indicated that these paints are new composite materials.
Article
Chemistry, Multidisciplinary
Anastasios Stergiou, Ioanna K. Sideri, Martha Kafetzi, Anna Ioannou, Raul Arenal, Georgios Mousdis, Stergios Pispas, Nikos Tagmatarchis
Summary: This study presents a straightforward approach for the growth of perovskite nano-crystals and their electronic communication with graphene, mediated by polymeric materials. The perovskite nano-crystals were immobilized on graphene via a bi-modal polymer, allowing for stable bindings and barrierless charge transport. The resulting structures showed uniform spherical perovskite nano-crystals on graphene nano-sheets, and demonstrated efficient electronic communication.
Article
Chemistry, Multidisciplinary
Andrianna Bouranta, Ioan Valentin Tudose, Luciana Georgescu, Anna Karaiskou, Nikolaos Rafail Vrithias, Zacharias Viskadourakis, George Kenanakis, Efsevia Sfakaki, Nikolaos Mitrizakis, George Strakantounas, Nikolaos Papandroulakis, Cosmin Romanitan, Cristina Pachiu, Oana Tutunaru, Lucian Barbu-Tudoran, Mirela Petruta Suchea, Emmanouel Koudoumas
Summary: Current technology to prevent biofouling relies on toxic materials, which can harm marine ecosystems. Developing less toxic antifouling materials is a challenge. In this study, composite lattices with different metal oxide contents were developed using 3D printing. The antifouling behavior of these materials was examined using image analysis techniques.
Article
Materials Science, Multidisciplinary
Kyriakos Mouratis, Ioan Valentin Tudose, Cosmin Romanitan, Cristina Pachiu, Marian Popescu, Georgios Simistiras, Stelios Couris, Mirela Petruta Suchea, Emmanuel Koudoumas
Summary: In this study, the effect of precursor concentration and solution quantity on the properties of WO3 films was investigated. The films exhibited good electrochromic activity and durability of charge exchange. The compositional and structural characteristics of the films were analyzed, suggesting that these features may contribute to the improved durability.
Article
Materials Science, Multidisciplinary
Volodymyr Khomenko, Oksana Butenko, Oksana Chernysh, Viacheslav Barsukov, Mirela Petruta Suchea, Emmanouel Koudoumas
Summary: This work focuses on the development of paint-like composites composed of carbon materials and magnetite in a polyvinyl butyral matrix. The study investigates the dependence of the composite's electromagnetic shielding properties on electrical characteristics and frequency. It is found that a high content of carbon components and the absence of filler particle agglomeration are crucial for achieving high electromagnetic shielding effectiveness. Additionally, a combination of carbon-graphite materials and magnetite fillers enhances shielding efficiency.
Article
Chemistry, Analytical
Panagiota Koralli, Songul Fiat Varol, George Mousdis, Dionysios E. Mouzakis, Ziya Merdan, Michael Kompitsas
Summary: In this study, undoped and doped zinc oxide thin films were prepared using the sol-gel technique. The structural, morphological, optical, and electrical properties of the films were investigated and the effects of dopant type and concentration on optoelectronics were studied.
Article
Chemistry, Multidisciplinary
Ioan Valentin Tudose, Kyriakos Mouratis, Octavian Narcis Ionescu, Cosmin Romanitan, Cristina Pachiu, Oana Tutunaru-Brincoveanu, Mirela Petruta Suchea, Emmanouel Koudoumas
Summary: This study fabricates graphene nanoplatelets (GNPs) and multiwall carbon nanotubes (CNTs)-polypropylene (PP) composite materials for electromagnetic interference (EMI) shielding applications. The obtained composite materials are not simple physical mixtures of these components but new materials with particular properties, with the filler concentration and nature affecting the nanomaterials' structure and their conductivity. The characteristics of GNPs have a significant effect on their functionality, leading to composites with lower conductivity and less effective EMI shielding. The CNTs-PP composite panels exhibit excellent EMI attenuation when the CNTs concentration is at 10%.
Article
Chemistry, Multidisciplinary
Ana-Maria Panaitescu, Iulia Antohe, Claudiu Locovei, Sorina Iftimie, Stefan Antohe, Luc Piraux, Mirela Petruta Suchea, Vlad-Andrei Antohe
Summary: This work presents a method for preparing nanostructured electrodes based on vertically-aligned copper nanowires covered with cadmium telluride thin films. These electrodes have great potential for use in substrate-type photovoltaic cells. The multi-step preparation protocol involves electrochemical synthesis of copper nanowires within an anodic aluminum oxide template, and embedding them in a compact cadmium telluride thin film. The study compares three deposition methods for obtaining CdTe layers that can consistently penetrate the prepared copper nanowire array. The results show that under optimized conditions, the electrochemical deposition method could allow the cost-effective fabrication of efficient solar cells.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Inorganic & Nuclear
Anna Ioannou, George C. Anyfantis, Karmen Milonakou-Koufoudaki, George Danezis, Constatinos A. Georgiou, Vassilis Psycharis, Catherine P. Raptopoulou, Constantina Kollia, Nikolaos Kelaidis, Nektarios N. Lathiotakis, George A. Mousdis
Summary: This article reports the synthesis and optoelectronic properties of two novel compounds with perovskite-like structure, where copper is the central cation. The structures were analyzed through Powder XRD data and Density Functional Theory (DFT). Chemical analysis of the final material was fully explained using Inductively Coupled Plasma Mass Spectrometry (ICP-MS), Vibronic studies (FTIR, Raman), Nuclear Magnetic Resonance (NMR), and Mass spectra. Their optoelectronic properties were thoroughly analyzed and presented with UV-vis measurements. The properties were also correlated with their structures through Raman spectroscopy and computational theoretical DFT studies.