Article
Materials Science, Ceramics
Li Zhang, Chen Zhou, Renhuai Wei, Xiaotian Kong, Xuebin Zhu
Summary: In this study, LaRh1-xNixO3 (x = 0, 0.05, 0.1) thin films were deposited by chemical solution deposition. The results showed that Ni doping can enhance the conductivity of the films, making them suitable for a wide range of applications.
CERAMICS INTERNATIONAL
(2023)
Article
Physics, Applied
Kazumasa Iida, Pablo Cayado, Hannes Rijckaert, Manuela Erbe, Jens Haenisch, Tatsunori Okada, Isabel Van Driessche, Satoshi Awaji, Bernhard Holzapfel
Summary: The electric transport properties of GdBa2Cu3O7-delta at temperatures below 77 K and in magnetic fields up to mu(0)Hn depend on the critical current density Jc.
SUPERCONDUCTOR SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Yao Xiao, Rainer Waser, Theodor Schneller
Summary: In this study, the parameters for the formation of 10% yttrium-doped barium zirconate thin films were systematically investigated using a low-cost chemical solution deposition method. By modifying the precursor solution and thermal treatment schedules, the microstructure and growth orientation were controlled. The relationship between microstructures and electrochemical properties was discussed, highlighting the importance of denser films with larger grains for better performance.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Materials Science, Multidisciplinary
Diana Griesiute, Dovydas Karoblis, Lina Mikoliunaite, Aleksej Zarkov, Andrei N. Salak, Aivaras Kareiva
Summary: Polycrystalline Bi0.67La0.33Fe0.5Sc0.5O3 thin films were successfully synthesized using a cost-effective chemical solution deposition process, with the optimal annealing temperature determined to be 600 degrees C. The orientation of crystallites and film roughness were found to be influenced by the nature of the substrate, as observed in XRD patterns.
Article
Materials Science, Ceramics
Martina Angermann, Georg Jakopic, Christine Prietl, Thomas Griesser, Klaus Reichmann, Marco Deluca
Summary: In this study, RuO2 thin films were synthesized using water and acetic acid as solvents. The microstructure, phase purity, electrical and optical properties, as well as thermal stability of the films were characterized. The films showed metallic behavior with low resistivity and high optical absorption.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Fangxiao Wang, Zelin Liu, Lei Shi
Summary: The g-C3N4/nano-sized ZnO (CZ) composite material was synthesized in CO2-saturated solutions, showing high surface areas for accelerated electron transport and increased catalytic active sites. The developed CZ-2 composite demonstrated exceptional efficiency of 99.9% after 25 minutes and maintained excellent stability after four recycles. This novel synthesis route may inspire the development of high-performance ZnO-based catalysts and expand the applications of ZnO.
Review
Chemistry, Multidisciplinary
Bingbing Yang, Linghua Jin, Renhuai Wei, Xianwu Tang, Ling Hu, Peng Tong, Jie Yang, Wenhai Song, Jianming Dai, Xuebin Zhu, Yuping Sun, Shujun Zhang, Xiaolin Wang, Zhenxiang Cheng
Summary: This paper summarizes the development of bismuth ferrite thin films in recent years, introduces the method and challenges of chemical solution route preparation. It also proposes an all-solution chemical-solution deposition (AS-CSD) method to prepare ferroelectric films with different orientations, and studies their growth, structure, and ferroelectric properties.
Article
Materials Science, Ceramics
Alfredo Blazquez Martinez, Nicolas Godard, Naveen Aruchamy, Cosme Milesi-Brault, Oana Condurache, Andreja Bencan, Sebastjan Glinsek, Torsten Granzow
Summary: In this study, polycrystalline Mn and Ti co-doped BiFeO3 thin films were fabricated on platinized silicon substrates by a solution deposition method, with PbTiO3 nanocrystals used as a seed layer to induce a preferential (100) pseudocubic orientation. The introduction of a PbTiO3 seed layer significantly reduced the leakage current and resulted in excellent room-temperature ferroelectric properties in the thin films.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Xue Chen, Jiaxian Wan, Hao Wu, Chang Liu
Summary: Passivation of oxide-based thin film transistors still poses a challenge due to the need for thermal treatments, which can impact the transistor characteristics. By reducing the growth temperatures of passivation layers, the performance of TFTs can be maintained within an acceptable range. Among all devices, TFTs with Al2O3 PVLs deposited at 100 degrees C using H2O as oxidant exhibit high mobility, proper threshold voltage, low subthreshold swing, and excellent stability.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Chemical
Caifeng Chen, Ruifang Zhang, Jiaguang Zhu, Xinyi Qian, Jing Zhu, Xuan Ye, Muyu Zhang
Summary: PVDF/ZnO thin films were prepared using a direct writing method, with the addition of nano-ZnO significantly improving the crystallinity and beta phase content of the PVDF film. Additionally, the dielectric constant of the composite film was greatly increased and the conductivity improved through the combined action of adding ZnO nanoparticles and electric field assistance.
POLYMER ENGINEERING AND SCIENCE
(2021)
Article
Materials Science, Ceramics
Jingjing Wang, Dayu Zhou, Wei Dong, Xiaoduo Hou, Feng Liu, Nana Sun, Faizan Ali, Ziqi Li
Summary: The study demonstrates that the ferroelectric properties and crystalline structure of pure zirconia thin films are influenced by film thickness, with an increase in thickness leading to a higher m-phase fraction. Futhermore, a phase transition from orthorhombic to cubic and tetragonal phases was observed as the thickness increased.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Chemical
Miao Song, Yafeng Yang, Maoqiao Xiang, Qingshan Zhu, Hongdan Zhao
Summary: The conventional CVD process to fabricate high quality TiC powders faces challenges due to the low conversion rate of TiCl4. To address this issue, TiCl3 was proposed as a precursor and a fluidized bed reactor was utilized to enhance homogeneous nucleation, resulting in the successful fabrication of high purity nanosized TiC powders.
Article
Chemistry, Physical
Xin-Yue Zhang, Qiang Ren, Chen Wang, Lin Zhu, Wen-Juan Ding, Yan-Qiang Cao, Wei-Ming Li, Di Wu, Ai-Dong Li
Summary: In this study, SnO2, ZnO thin film, and SnO2/ZnO composite thin film hydrogen sensors were fabricated using atomic layer deposition (ALD). The effects of ALD cycles and heat treatment temperatures on the sensing properties were investigated. The SnO2/ZnO composite film sensor exhibited the best hydrogen-sensing performance, attributed to the synergistic effect of the SnO2-ZnO heterojunction and oxygen vacancies in the SnO2 film. ALD may be a feasible strategy for constructing highly sensitive hydrogen sensors based on Si for micro-electromechanical system applications.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mouna Khiari, Michael Lejeune, Mickael Gilliot, Florica Lazar, Aomar Hadjadj
Summary: The original technique developed in this study enables the direct and efficient incorporation of silver metal nanoparticles into ZnO precursor solution, resulting in nanocomposite thin films with a large effective surface area for interaction with the external environment and a large surface area for metal-semiconductor interaction suitable for surface photocatalysis reactions. These nanocomposites exhibit improved photocatalytic performance, stability, and reusability, making them promising for water treatment applications.
Article
Toxicology
Christian Monse, Monika Raulf, Birger Jettkant, Vera van Kampen, Benjamin Kendzia, Leonie Schuermeyer, Christoph Edzard Seifert, Eike-Maximilian Marek, Goetz Westphal, Nina Rosenkranz, Rolf Merget, Thomas Bruening, Juergen Buenger
Summary: The study investigated the health effects of inhalation of different sizes of ZnO particles. Results showed that nano-sized and micro-sized particles didn't differ significantly in their impact on systemic inflammatory responses. The higher deposition efficiency of micro-sized particles in the respiratory tract led to stronger inflammatory reactions.
ARCHIVES OF TOXICOLOGY
(2021)
Article
Chemistry, Physical
Sarika B. Dhavale, Vithoba L. Patil, Satyajeet S. Patil, Dipali S. Patil, Rushikesh P. Dhavale, Hyung-Ho Park, Pramod S. Patil
Summary: Three dimensional hierarchical porous carbon was prepared from dry almond leaves (Terminalia catappa) by a two step process. The C-1000 carbon sample showed a surface area of 491.3 m(2) g(-1) and a specific capacitance of 212 F g(-1), while the AC-2 sample exhibited a specific surface area of 988.7 m(2) g(-1) and a specific capacitance of 394 F g(-1), with excellent cycling stability and mechanical flexibility, making it suitable for portable electronics application.
SUSTAINABLE ENERGY & FUELS
(2023)
Article
Chemistry, Multidisciplinary
Swapnajit Mulik, Suprimkumar D. Dhas, Annasaheb Moholkar, Vinayak G. Parale, Hyung-Ho Park, Pramod A. Koyale, Vijay S. Ghodake, Dillip K. Panda, Sagar D. Delekar
Summary: The binary and ternary nanocomposites of Co3O4@Co/N-CNTs with Ag NPs and rGO were successfully synthesized using a wet chemical route. Among different compositions tested, a ternary nanocomposite with a stoichiometric ratio of 7.0:1.5:1.5 of Co3O4@Co/N-CNTs, Ag NPs, and rGO exhibited the highest specific capacitance. The optimized nanocomposite showed excellent electrochemical stability and achieved an energy density of 74.1 W h.kg-1 and a power density of 443.7 W.kg-1.
Article
Energy & Fuels
Malik Abdul Rehman, Minjae Kim, Sachin A. Pawar, Sewon Park, Naila Nasir, Dong-eun Kim, Muhammad Farooq Khan, Van Huy Nguyen, Akendra Singh Chabungbam, Yongho Seo, Takeaki Sakurai, Seung-Hyun Chun, Do Hyoung Koo, Chul-Ho Lee, Seong Chan Jun, Hyung-Ho Park
Summary: Transition metal dichalcogenide (TMDC) materials are promising candidates for 2D solar cell devices due to their easy integration, wide band gap ranges, and high absorption coefficients. In this study, a wet transfer process with thermal release tape is used to simplify the fabrication steps of 2D tungsten diselenide (WSe2) based solar cell devices. The simplified process reduces production costs and improves yield. Additionally, the use of an aluminum oxide (Al2O3) antireflective coating on the WSe2/Si junction demonstrates a significant improvement in power conversion efficiency.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Chaeseon Hong, Minjae Kim, Jin-Gyu Lee, Qingyi Shao, Hong-Sub Lee, Hyung-Ho Park
Summary: Si-ZnO thin-film transistors were fabricated via atomic layer deposition (ALD) and then annealed in oxygen, resulting in improved electrical characteristics and lower power consumption.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Chemistry, Physical
Sung-Jin Jung, Sang-Soon Lim, Byeong-Hyeon Lee, Sung Ok Won, Hyung-Ho Park, Seong Keun Kim, Jin-Sang Kim, Seung-Hyub Baek
Summary: Solid compounds with volatile elements often deviate from stoichiometric composition during thermal processes, leading to varied properties. Understanding the effect of process parameters on element volatility and how physical properties change with altered stoichiometry is crucial.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Ceramics
Hae-Noo-Ree Jung, Haryeong Choi, Sang-Hyun Kim, Wook Ki Jung, Hyung-Ho Park
Summary: This study investigates the effect of surfactants (non-ionic, cationic, or anionic) on alumina aerogels. The findings show that the charge-charge interactions between surfactants and cationic inorganic species in the aluminum precursor influence the pore structure of the aerogels. Controlling the surfactant concentration allows for control over the pore structure of the aerogels.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2023)
Review
Chemistry, Multidisciplinary
Puttavva Meti, Qi Wang, D. B. Mahadik, Kyu-Yeon Lee, Young-Dae Gong, Hyung-Ho Park
Summary: Aerogels are highly porous materials prepared using sol-gel chemistry, which possess unique physical and chemical properties. They are potential candidates for diverse applications, such as thermal insulation and environmental remediation. However, the fragility and limited scale-up production hinder their routine use in daily life. Therefore, it is important to develop efficient and cost-effective methods for sustainable aerogel production.
Article
Nanoscience & Nanotechnology
Jinwoo Kim, Seenu Ravi, Kijun Kim, Yujin Choi, Hyung-Ho Park, Youn-Sang Bae
Summary: A novel porous covalent organic polymer catalyst with dual acid sites was developed for efficient esterification of levulinic acid with aliphatic alcohols. The catalyst exhibited high conversion and selectivity, and showed good recyclability.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Minjae Kim, Jeong Yun Hwang, Dong-eun Kim, Taehwan Song, Kyu Hyoung Lee, Hyung-Ho Park
Summary: In this study, optimized atomic layer deposition (ALD) process parameters were used to deposit crystalline ZrO2 films. Crystalline characteristics of ZrO2 films were obtained by controlling the deposition temperature. The mixture of tetragonal and monoclinic phases of the ZrO2 films exhibited the highest corrosion resistance properties.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Environmental
Younghun Kim, Vinayak G. Parale, Taehee Kim, Sang-Hyun Kim, Haryeong Choi, Umakant M. Patil, Kazuyoshi Kanamori, Hyung-Ho Park
Summary: A novel metal coordination-assisted sol-gel method was developed for the synthesis of nanostructures with different architectures. The energy storage capacity was influenced by the composition-derived properties and structure-derived properties, which were controlled by the molar ratio of Zn/Co and the architecture of the nanostructures. The one-dimensional Zn-Co-S aerogel exhibited excellent electrochemical performance as a supercapacitor, with high specific capacitance, high-rate capability, and outstanding cyclic stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Chaeseon Hong, Minjae Kim, Byeong-Min Lim, Sunil Moon, Keonwook Kang, Ioannis Kymissis, Hong-Sub Lee, Hyung-Ho Park
Summary: In this study, cation and anion codoped ZnO thin films were prepared through atomic layer deposition, and the effects of different anion doping concentrations on the film properties were investigated. The codoped ZnO films showed reduced oxygen vacancy due to the codoping effect. However, the electrical and optical characteristics of the films exhibited contrasting tendencies depending on the type of anion element. These differences were attributed to the correlation effects between Si doping, reduced interfacial trap density, and anion doping, oxygen vacancy passivation. The behavior of each anion also varied in terms of charge carrier concentration.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Vinod V. Patil, Sachin S. Pujari, Shraddha B. Bhosale, Sambhaji S. Kumbhar, Vinayak G. Parale, Chandrakant D. Lokhande, Jayavant L. Gunjakar, Mukund G. Mali, Dattakumar S. Mhamane, Hyung-Ho Park, Umakant M. Patil
Summary: This study developed binder-free hydrous cobalt phosphate thin film electrocatalysts using the SILAR method and observed the impact of annealing on the OER efficiency. The as-prepared hydrous cobalt phosphate demonstrated outstanding OER performance and overall water splitting ability.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Environmental Sciences
Vishwanath Hiremath, Jayun Heo, Hyung-Ho Park, Jeong Gil Seo
Summary: This study improves the crystallinity of aerogel materials and enhances their performance in photocatalytic applications. It is found that the phase transformation in TiO2 aerogel only occurs in specific phase combinations, and samples with rutile phase composition have higher oxygen vacancies. The developed TiO2 aerogel photocatalysts exhibit efficient degradation ability for dyes.
ENVIRONMENTAL RESEARCH
(2023)
Article
Engineering, Chemical
Yujin Choi, Hyug Hee Han, Kwang Hyun Oh, Hyung-Ho Park, Seenu Ravi, Youn-Sang Bae
Summary: In this study, phosphite-based porous covalent organic polymers (PCOPs) with numerous aromatic and acidic phosphite sites, large surface areas, and hierarchical pore structures were synthesized and found to efficiently remove sulfur-containing PPCPs from water.
SEPARATION AND PURIFICATION TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rushikesh P. Dhavale, Vinayak G. Parale, Haryeong Choi, Taehee Kim, Kyu-Yeon Lee, Varsha D. Phadtare, Hyung-Ho Park
Summary: In this study, epoxy-thiol crosslinked silica aerogels were synthesized using a unique method, resulting in improved mechanical resilience for pollutant adsorption. By adjusting the ratio of catalysts and precursors, aerogels with different characteristics and properties were obtained.
APPLIED SURFACE SCIENCE
(2024)