Article
Chemistry, Physical
Hang Jia, Zewei Wang, Rui Cai, Zhouli Wang, Yahong Yuan, Tianli Yue
Summary: Bacterial drug resistance due to antibiotic abuse poses a serious threat to human health, necessitating the development of alternative strategies. In this study, a hierarchical three-dimensional Bi2S3 nanoflowers were fabricated and utilized as a support for the growth of silver nanoparticles (Ag NPs), resulting in broad-spectrum antibacterial activity. The antibacterial mechanism revealed that the fabricated Ag/BS damaged the bacterial cell membrane, leading to the loss of intracellular substances. The compromised membrane reduced the activity of membrane-bound enzymes, arresting metabolic activity. Additionally, Ag/BS disrupted the bacterial antioxidant defense system, leading to oxidative damage and loss of bacterial viability. Furthermore, in vitro cytotoxicity and in vivo antibacterial assays confirmed the satisfactory biocompatibility and effective antibacterial performance of Ag/BS.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Shay Weiss, Amir Ben-Shmuel, Itamar Chajanovsky, Dana M. Mizrahi, Ran Yosef Suckeveriene
Summary: This study successfully designed and prepared a novel hybrid antibacterial polymer based on polyaniline and halamine, and characterized and tested it. The results showed that the hybrid material exhibited strong antibacterial activity, inhibiting the growth of bacteria effectively. Additionally, the added surfactant influenced the release of active chlorine from the hybrid, diminishing the antibacterial efficacy.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Engineering, Chemical
Hailan Yu, Limin Zhou, Yanlin Liu, Xianqian Ao, Jinbo Ouyang, Zhirong Liu, Adesoji A. Adesina
Summary: Polyaniline (PANI) was electrodeposited on porous biocarbon (CC) to fabricate a high-performance composite electrode (CC/PANI) for U(VI) electrosorption. The CC/PANI electrode showed high specific capacitance, excellent cyclic stability, and capacitive control characteristics. CC/PANI-2 exhibited the highest electrosorption capacity for U(VI) among various CC/PANI electrodes, reaching a maximum value of 282.2 mg/g at pH 4.0 and 0.9 V. The electrosorption mechanism for U(VI) removal is mainly ascribed to EDL and pseudocapacitive electrosorption, with possible contribution from U(VI) coordination by N atoms of CC/PANI. This work provides a strategy for the efficient treatment of radioactive nuclear wastewater.
Article
Chemistry, Physical
Wen Long Liu, Yong Qiang Guo, Tao Lin, Hong Chao Peng, Ya Ping Yu, Fan Yang, Sheng Chen
Summary: A hierarchical MXene@PANI-ACC electrode was fabricated to address the self-stacking issue of MXene nanosheets during electrode preparation. The electrode exhibited excellent electrochemical performance and showed great promise for high-performance energy storage devices.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Xiaofeng Dong, Xiaoan Lv, Junwei Huang, Yue Chang, Xiaona Ren, Changchun Ge
Summary: Sodium titanate, with its superior ion adsorption ability, holds potential for the production of high-quality antibacterial agents. However, the complex preparation process and difficulty of recovery have limited its applications until now. In this study, sodium titanate was successfully synthesized under mild conditions using reactants with higher potential energy, resulting in a hierarchical structure and increased specific surface area. This sodium titanate powder demonstrated a high adsorption capacity for Ag ions, reaching 486.9 mg/g (32.7 wt%) within one minute, with estimated active sites of about 4.51 mmol/g. Additionally, sodium titanate exhibited excellent antibacterial performance against E. coli after loading Ag ions, achieving an antibacterial efficiency of 99.68% within 20 minutes, and MIC and MBC values of 12.5 mg/L and 200 mg/L, respectively.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Engineering, Environmental
Caihong He, Chen Liu, Moying Li, Mao Li, Jieli Yin, Sumei Han, Jing Xia, Dengyue Chen, Wenbin Cao, Qipeng Lu, Federico Rosei
Summary: Metal-organic frameworks (MOFs) are promising materials for antibacterial applications due to their specific properties. However, their broader application is hindered by various challenges. In this study, a Cu-BDC nanosheets-based antibacterial mesh with a hierarchical structure was designed and fabricated, which exhibited excellent antibacterial performance, biocompatibility, and durability.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Samiran Garain, Cu Dang Van, Seungwoo Choi, Tru Nguyen Dang, Joel W. Ager, Ki Tae Nam, Hyeyoung Shin, Min Hyung Lee
Summary: A hierarchical nickel cobalt thiospinel hybrid catalyst decorated with polyaniline (PANI) has been developed, showing enhanced dual catalytic activity for both the oxygen evolution reaction (OER) and the hydrogen evolution reaction (HER). This catalyst exhibits outstanding electrocatalytic activity in alkaline solution, surpassing benchmark noble-metal-based RuO2 and Pt/C.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Inorganic & Nuclear
Sharad S. Amin, Jamie M. Cameron, Richard B. Cousins, James Wrigley, Letizia Liiro-Peluso, Victor Sans, Darren A. Walsh, Graham N. Newton
Summary: The self-assembly of amphiphilic, organofunctionalized hybrid polyoxometalates on various types of carbon materials leads to the formation of hierarchical nanostructures. These nanostructures exhibit significant influence on electrochemical behavior and stability, suggesting a new approach for fabricating hierarchically modified electrode surfaces.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Materials Science, Ceramics
Zhe Sheng, Xiongchao Lin, Yiting Zhao, Xiudong Zhu, Yukun Zhang, Lei Huang, Deping Xu, Yonggang Wang
Summary: In this study, a carbon-incorporated multiple metal sulfides-based composite with a unique three-dimensional hierarchical core-shell structure was successfully prepared. The composite exhibited nanoflake and nanospine structures on the electrode, enhancing the electrochemical conductivity and charge-ion transfer efficiency. The composite showed a high specific capacity and excellent cycling stability, indicating its great potential for applications.
CERAMICS INTERNATIONAL
(2022)
Article
Environmental Sciences
Yanjiang Li, Yufeng Yin, Fengting Xie, Guangzhen Zhao, Lu Han, Li Zhang, Ting Lu, Mohammed A. Amin, Yusuke Yamauchi, Xingtao Xu, Guang Zhu, Likun Pan
Summary: In this study, the conductivity and desalination performance of capacitive deionization (CDI) materials were improved by coating polyaniline on the surface of Mn(2)O(3) nanorods, showing potential applications.
ENVIRONMENTAL RESEARCH
(2022)
Article
Chemistry, Physical
Yan Wen, Jingyao Qi, Deqiang Zhao, Jinghua Liu, Peicheng Wei, Xu Kang, Xin Li
Summary: This study successfully designed an O-incorporated hierarchical NiCoP/Ni2P hybrid electrode, which overcame the additional cost caused by heteroatom doping and exhibited excellent catalytic performance in alkaline hydrogen evolution reaction. Oxygen doping optimized the free energy of reactions and accelerated the hydrogen evolution process, while the strong coupling of O-NiCoP/Ni2P improved electron transfer efficiency.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Wang Yang, Liqiang Hou, Peng Wang, Yun Li, Rui Li, Bo Jiang, Fan Yang, Yongfeng Li
Summary: This study presents the rational design of hierarchical NiCo2O4 architectures with 2D-nanosheets-shell and 3D-nanocages-core for high-performance supercapacitors, addressing the challenges of sluggish reaction kinetics, low mass loading, and volume change. The designed electrode exhibits excellent electrochemical performance and provides new insights for energy storage applications.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Engineering, Environmental
Xiaofen Yang, Baoxin Fan, Xinxin Wang, Xi Tang, Jinglin Wang, Guoxiu Tong, Xiaojuan Wang, Weifu Tian
Summary: High-performance absorbers are urgently needed to address the increasing electromagnetic wave pollution resulting from the rapid development of information technology. A simple SDS/HCl-assisted oxidative polymerization method was developed to synthesize nanorod-coated PANI hierarchical microtubes with controllable morphology evolution and excellent electromagnetic wave absorption properties. The PANI hierarchical microtubes with tunable morphology and conductivity offer great promise for various fields such as sensors, electronics, optics, catalysis, energy storage, and EMW absorption and shielding.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Chemical
Bojun Li, Wenjing Tang, De Sun, Bingbing Li, Yanxia Ge, Xin Ye, Wei Fang
Summary: The study introduced a facile electrochemical method to fabricate graphene oxide/sulfuric acid-doped polyaniline membrane, which exhibited higher conductivity, improved pore structure, and enhanced hydrophilicity. The GO/S-PANI membrane showed higher stability and better antibacterial performance in electrofiltration.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Meijiao Sun, Zhenkun Zhang, Xiaoqiang Wang, Yifan Tan, Shuixin Xia, Yuhua Xue, Guangzhi Yang
Summary: The study demonstrates the importance of rational design in electrode materials for high-performance supercapacitors. By utilizing a carbon-coated MnCO3@MnO2@C hierarchical hollow nanostructure, the electrode shows impressive electrochemical performance and stability in supercapacitors.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Materials Science, Multidisciplinary
Kwang Hyun Paek, Sung Gap Im
Summary: This study demonstrates the potential of recycling PET waste and sustainable packaging applications through the synthesis of biodegradable aromatic-aliphatic copolymers with excellent properties from BHET.
ACS APPLIED POLYMER MATERIALS
(2022)
Correction
Chemistry, Multidisciplinary
Hogi Kim, Younseong Song, Seonghyeon Park, Youson Kim, Hyeonwoo Mun, Jueun Kim, Seongeun Kim, Kyoung G. Lee, Sung Gap Im
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
Yong Cheon Park, Taehyun Kim, Hye Rin Shim, YoungWoo Choi, Seungbum Hong, Seunghyup Yoo, Sung Gap Im
Summary: This study improves the robustness of thin film encapsulation (TFE) in mechanical deformation by harnessing interfacial residual stress. The residual stress is generated by the temperature difference between the organic layer deposition and the inorganic layer deposition, and it is optimized by controlling the organic layer thickness, coefficient of thermal expansion (CTE), and elastic modulus. The TFE with optimized residual stress retains a low water vapor transmission rate (WVTR) after multiple bending cycles.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Environmental
Woosung Jo, Kihoon Jeong, Young-Sam Park, Jeong-Ik Lee, Sung Gap Im, Taek-Soo Kim
Summary: In this study, a thermally stable yet soft pressure-sensitive adhesive (PSA) was synthesized via initiated chemical vapor deposition (iCVD), exhibiting excellent mechanical properties and reliability at the operating temperature of foldable devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Yong Cheon Park, Hye Rin Shim, Kihoon Jeong, Sung Gap Im
Summary: A thin planarization layer with a thickness of less than 2μm is achieved using a solvent-free process called initiated chemical vapor deposition (iCVD). By adapting a copolymer from two soft, curable monomers, excellent planarization is achieved on various nano-grating patterns. The TFE fabricated on the planarized pattern exhibits excellent barrier properties, making iCVD planarization a promising technique for fabricating TFE on complex device surfaces.
Article
Engineering, Biomedical
Hyunah Ahn, Younghak Cho, Geun-Tae Yun, Kwang Bo Jung, Wonji Jeong, Yesol Kim, Mi-Young Son, Eunjung Lee, Sung Gap Im, Hee-Tae Jung
Summary: This study presents a hierarchical structure composed of nano-pillars on micro-wrinkles for enhancing cardiomyocyte maturation. The responses of cardiomyocytes on hierarchical topography are systematically investigated. The combination of nano-pillars and micro-wrinkles significantly enhances the maturation of cardiomyocytes.
ADVANCED HEALTHCARE MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Ja Hoon Koo, Juyeon Kang, Sungjun Lee, Jun-Kyul Song, Junhwan Choi, Jiyong Yoon, Hong Jun Park, Sung-Hyuk Sunwoo, Dong Chan Kim, Wangwoo Nam, Dae-Hyeong Kim, Sung Gap Im, Donghee Son
Summary: A thin and stretchable polymer layer fabricated by vacuum deposition can be used as the gate dielectric in stretchy carbon-nanotube-based transistors and circuits, which can function at 40% strain. This research is of great significance and is rated 9 out of 10 in importance.
NATURE ELECTRONICS
(2023)
Article
Chemistry, Physical
Jaehyoung Ko, Daeun Kim, Giho Sim, Se Youn Moon, Sang Seok Lee, Se Gyu Jang, Seokhoon Ahn, Sung Gap Im, Yongho Joo
Summary: Boron nitride nanotube (BNNT) has attracted attention due to its exceptional material properties, but practical implementation has been difficult due to purity issues. In this study, a scalable purification method for BNNT was developed using aqueous polymer two-phase extraction, achieving a high purity level of >98%. The method was successfully scaled up and the purified BNNT exhibited liquid crystal behavior. This large-scale purification effort is expected to contribute to the macroscopic realization of BNNT's exceptional properties in the future.
Article
Biophysics
Jayeon Song, Younseong Song, Hyowon Jang, Jeong Moon, Hyunju Kang, Yong-Min Huh, Hye Young Son, Hyun Wook Rho, Mirae Park, Eun-Kyung Lim, Juyeon Jung, Yongwon Jung, Hyun Gyu Park, Kyoung G. Lee, Sung Gap Im, Taejoon Kang
Summary: Accurate and efficient DNA detection is crucial for disease diagnosis and health monitoring. This study presents a one-step elution-free DNA analysis method based on the combination of CRISPR/Cas9-mediated CLAT assay and a DNA-capturing pDMAMS-coated tube. The combination simplifies DNA detection in a single tube without the need for complicated extraction steps, improving sensitivity. The platform demonstrates attomolar sensitivity in various samples and shows potential applications in tissue and liquid biopsies.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Physical
Jaehyeong Bae, Keonwoo Choi, Hyunsub Song, Do Heung Kim, Doo Young Youn, Su-Ho Cho, Dogyeong Jeon, Jiyoung Lee, Junyoung Lee, Wontae Jang, Changhyeon Lee, Youson Kim, Chanhoon Kim, Ji-Won Jung, Sung Gap Im, Il-Doo Kim
Summary: This study passivates lithium metal with electrolyte-swellable polymer nanolayers, improving the stability of solid-electrolyte interphases (SEI) and enhancing Li-ion transport. The developed pDMAMS-Li anodes significantly extend the cycle life of Li-ion batteries. This research provides new insights for managing the interface between liquid-state electrolyte and solid-state Li metal.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Analytical
Seo Jin Kim, Hong Jun Park, Eun Seop Yoon, Bong Gill Choi
Summary: This study developed high-sensitivity humidity sensors based on holey-reduced graphene oxide (HRGO) with a large surface area and abundant pore structure. The sensors exhibited high sensitivity, fast response time, and long-term stability, and their impedance responses were similar in mechanically standard and bent states. Additionally, electrochemical impedance spectroscopy was used to understand the humidity-sensing mechanism of the HRGO materials.
Article
Materials Science, Multidisciplinary
Jin Ryu, Myung Seok Oh, Jongsun Yoon, Minjeong Kang, Jae Bem You, Hyomin Lee, Sung Gap Im
Summary: Recent advances in wearable and embeddable displays have increased the demand for functional coatings that are stretchable and maintain high optical transparency in fogging conditions. A conformal antifogging polymer thin film with exceptional stretchability was synthesized using initiated chemical vapor deposition (iCVD). This film offers excellent antifogging performance and high elasticity, and outperforms commercial antifogging spray coatings in transmittance, even in hot water vapor, cold-fog transition tests, and when stretched.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Jaehyoung Ko, Ilhwan Yu, Seung-Yeol Jeon, Daewon Sohn, Sung Gap Im, Yongho Joo
Summary: Stable, nitroxide-based organic radicals have gained significant attention in various research fields, but there is still a knowledge gap regarding the solid-state electronics of small-molecular radicals. This study examines the structure-property relationship of a model nitroxide and its derivatives, and proposes a strategy to enhance their solid-state conductivity by controlling humidity.
Article
Chemistry, Physical
Kihoon Jeong, Moo Jin Kwak, Youson Kim, Youjin Lee, Hyeonwoo Mun, Min Ju Kim, Byung Jin Cho, Siyoung Q. Choi, Sung Gap Im
Summary: This study developed an elastomeric film with instant self-healing ability at room temperature within 10 seconds. The material showed rapid recovery of toughness and could be welded together under ambient conditions without the need for external energy or reagents. This finding has potential applications in wearable electronics and soft robotics.
Article
Automation & Control Systems
Jun-Hwe Cha, Byung Chul Jang, Jungyeop Oh, Changhyeon Lee, Sang Yoon Yang, Hamin Park, Sung Gap Im, Sung-Yool Choi
Summary: This study proposes an organic-inorganic bilayer stacking structure for offline learning in neural networks. The structure shows improved reliability and control of analog resistive switching and synaptic functions. Long-term stability of multilevel states is achieved through an in-depth study on conductance-level stability. Device-to-system-level simulations highlight the significance of multilevel states in fully connected layers.
ADVANCED INTELLIGENT SYSTEMS
(2022)