Article
Chemistry, Multidisciplinary
Andrew T. Smith, Kuangyu Shen, Zaili Hou, Songshan Zeng, Jing Jin, Chenjun Ning, Yufei Zhao, Luyi Sun
Summary: An adaptable stimuli responsive system based on defective graphitic carbon nitride/polyvinyl alcohol composite is proposed, offering applications in visible light responsive rewritable paper and transparent mechanochromic films.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Engineering, Environmental
Xianqiang Gao, Luchen Ai, Lulu Wang, Yanwei Ju, Shuang Liu, Jing Wang, Hai Fan
Summary: A photocatalytic composite sponge consisting of graphitic carbon nitride (g-C3N4) and polyvinyl alcohol (PVA) was prepared, which showed a porous structure with uniformly distributed g-C3N4 nanoparticles. The composite sponge exhibited excellent elastic deformation property and efficient adsorption and photodegradation properties for removal of organic pollutants from wastewater. Moreover, it could be easily recovered and recycled.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Biochemistry & Molecular Biology
Shujun Liu, Xianqiang Gao, Hai Fan, Mengting Zhang, Geoffrey I. N. Waterhouse, Shuhua Zhu
Summary: Novel food packaging films containing chitosan, polyvinyl alcohol, and porous graphitic carbon nitride were successfully prepared. The addition of porous graphitic carbon nitride improved the mechanical properties and antibacterial activity of the chitosan-based films. The films showed promising potential for low-cost antimicrobial packaging applications.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Review
Materials Science, Multidisciplinary
Xinyue Kong, Xiangmei Liu, Yufeng Zheng, Paul K. Chu, Yu Zhang, Shuilin Wu
Summary: This review summarizes the basic characteristics, preparation methods, and photocatalytic antibacterial mechanism of metal-free polymeric two-dimensional nanomaterial graphitic carbon nitride (g-C3N4), emphasizing the importance of increasing light utilization, reducing recombination of electron-hole pairs, and maintaining biocompatibility and environmental friendliness. Furthermore, various modification strategies and examples of combining g-C3N4's photocatalytic antibacterial effect with other strategies to achieve synergistic effects are introduced.
MATERIALS SCIENCE & ENGINEERING R-REPORTS
(2021)
Review
Chemistry, Inorganic & Nuclear
Jianlong Wang, Shizong Wang
Summary: This review systematically analyzes and summarizes the recent advances in graphitic carbon nitride (g-C3N4)-based composites, including preparation, characterization, modification, and environmental application. The focus is on the modification mechanisms and environmental applications. Concluding remarks and perspectives for further study are provided.
COORDINATION CHEMISTRY REVIEWS
(2022)
Article
Engineering, Environmental
Susmita Dolai, Anna Vanluchene, Petr Stavarek, Petr Dzik, Radek Fajgar, Karel Soukup, Petr Kluson
Summary: The combination of photocatalysis and micro-flow technology provides a highly capable tool for the design and utilization of functional thin films. The study on graphitic carbon nitride films showed that thin film catalysts immobilized on photo-microreactor walls exhibited significantly higher photoactivity.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Petr Praus
Summary: The electronegativity values of graphitic carbon nitride (g-C3N4) are complex and vary based on different calculation methods, ranging from 4.64-4.77eV and 3.79-4.62eV. Experimental verification is recommended for accurately determining the conduction band potentials of g-C3N4.
Article
Engineering, Environmental
Tairan Wang, Tao Wan, Songsong He, Jian Wang, Mingrui Yu, Yang Jia, Qi Tang
Summary: Structural and surface defects engineering in graphitic carbon nitride (g-C3N4) through carboxyl group modification greatly enhances its photocatalytic activity. The introduction of carboxyl groups onto g-C3N4 increases the surface area and pore volume, improves visible light absorption, and enhances the separation and migration of photogenerated carriers. The modified g-C3N4 exhibits high photocatalytic degradation of bisphenol A (BPA) and excellent stability with active oxygen and holes identified as the main active species.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Cafer Saka
Summary: The surface properties of graphitic carbon nitride (GCN) were enhanced by doping with sulphur (S), boron (B), and oxygen (O). Metal-free GCN catalysts with heteroatom dopants showed improved surface functional groups and a carbon defect structure. These catalysts were used for hydrogen production from sodium borohydride (SB) methanolysis, resulting in a 2.2-fold increase in H2 production compared to GCN. The HGR value obtained with B, O, and S doped GCN was 9166 ml min-1g-1. XPS, SEM-EDX, TEM, FTIR, and XRD analyses were performed to investigate the structural properties of the catalysts, and the activation energy (Ea) for B, O, and S doped GCN was determined to be 28.89 kJ mol-1.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Engineering, Environmental
Long Chen, Xiang Liang, Haixia Wang, Qinqin Xiao, Xiaoqing Qiu
Summary: A simple and green method is developed to fabricate ultra-thin graphite carbon nitride nanosheets, which possess a large specific surface area, a thin nanosheet structure, and exhibit excellent photocatalytic hydrogen evolution performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Katsiaryna S. Burts, Tatiana Plisko, Vladimir G. Prozorovich, Galina B. Melnikova, Andrei I. Ivanets, Alexandr Bildyukevich
Summary: The modification of the polyvinyl alcohol (PVA) selective layer of thin film composite (TFC) membranes using aluminosilicate (Al2O3•SiO2) nanoparticles improved the structure and pervaporation performance. PVA-Al2O3•SiO2/polyacrylonitrile (PAN) thin film nanocomposite (TFN) membranes were developed for the separation of ethanol/water mixtures, resulting in increased hydrophilicity and improved stability compared to the reference membrane.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Polymer Science
Yu-Kai Su, Caroline M. Coxwell, Steven Shen, Stephen A. Miller
Summary: A range of polyvinyl ketals was synthesized from commercially available polyvinyl alcohol (PVA) and biobased ketones, showing potential as suitable candidates for water-degradable packaging materials. The ketalization reaction was confirmed and measured using H-1 NMR, indicating different degrees of ketalization and molecular weights for the polyvinyl ketals. Kinetic studies showed the ketalization reaction neared equilibrium and degradation studies demonstrated the water-degradability of the polyvinyl ketals under various conditions.
Article
Electrochemistry
Libina Benny, Anitha Varghese, Uraiwan Sirimahachai, Gurumurthy Hegde
Summary: Selective electrochemical conversion of THFA was achieved using p-CD functionalized GCN nanocomposite. The reaction mechanism and kinetics of TEMPO-mediated oxidation of THFA were investigated using cyclic voltammetry and chronoamperometry techniques, and the desired product was obtained with high yield through bulk electrolysis.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Applied
Yinchuan Pan, Xu Liu, Jing Liu, Jianping Wang, Juxiang Liu, Yanxia Gao, Ning Ma
Summary: The study utilized a synthesized compound MIM/g-C3N4 to detect organophosphorus pesticides in dairy products, showing a large specific surface area, good thermal stability, and reusability. The developed method demonstrated good linear relationship, low limits of detection, and high recoveries.
Article
Chemistry, Physical
Ruokun Jia, Yulin Zhang, Xiaohang Yang
Summary: This study focuses on the development of highly efficient and visible-light responsive carbon nitride (CN) photocatalysts for addressing energy shortages and environmental pollution challenges. The novel 2-hydroxy-4,6-dimethylpyrimidine (HDMP) group and Ca2+ co-modified CN photocatalyst exhibited significantly enhanced visible-light-driven photocatalytic activity for CO2 reduction, showing the potential of molecular engineering and metal ions incorporation for improving CN's photocatalytic performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Multidisciplinary
SungUk Choi, DongUk Lee, YongSung Kwon, NamKyu Lee, MyungJun Moon, MinYoung Shon
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2018)
Article
Multidisciplinary Sciences
Dong Won Kim, Kyung Tae Kim, Dong Uk Lee, Soo-Ho Jung, Jihun Yu
SCIENTIFIC REPORTS
(2020)
Article
Chemistry, Multidisciplinary
Donguk Lee, Seungyong Choi, Myungjun Moon, Minyoung Shon
Summary: Research has shown that laboratory simulation of seawater immersion conditions can evaluate the antifouling performance of FR coatings, with circulating seawater channel tests able to simulate the marine foulant removal efficiency of FR coatings under different ship speeds. Therefore, laboratory-scale microalgae fouling tests and circulating seawater channel tests are reliable methods for evaluating the antifouling performance of FR coatings.
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Dong Won Kim, Kyung Tae Kim, Dong-Uk Lee, Soo-Ho Jung, Dong Yeol Yang, Jihun Yu
Summary: This study introduced a PVDF coating layer onto the surface of aluminum particles, resulting in both hydrophobic surface behavior and active formation of Al fluorides. The PVDF-coated aluminum particles exhibited higher exothermic enthalpy and retained enhanced reactivity even under high humidity conditions.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
SeungYong Choi, Shivshankar Chaudhari, HyeonTae Shin, KieYong Cho, DongUk Lee, MinYoung Shon, SeungEun Nam, YouIn Park
Summary: By performing dopamine oxidative autopolymerization on the surface of halloysite nanotubes (HNTs) and creating a PDA/HNT-incorporated polyvinyl alcohol/polyvinyl amine (PVA-PVAm) membrane, a stable and efficient pervaporation-dehydration system for isopropanol/water separation was achieved. The membrane showed superior performance in terms of flux and separation factor, with remarkable reusability over long-term operation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2022)
Article
Biophysics
Dong Uk Lee, Dong Won Kim, Seung Yeup Lee, Dong Yun Choi, Seung Yong Choi, Kyoung-Seok Moon, Min Young Shon, Myung Jun Moon
Summary: In this study, a facile immersion reaction method was used to modify a biocompatible amino acid on the polyimide surface, creating an antifouling surface with antibacterial and anti-adhesive properties. The modified surface reduced bacterial adhesion, protein adsorption, and surface friction on the catheter, demonstrating the potential to prevent infections, thrombi, and tribological damage. This modification method can be used for continuous production and is applicable to various medical equipment.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Ki Joon Heo, Dong Uk Lee, Jae Hak Shin, Junghun Park, Byeong Jin Lee, Juhun Shin, Sang Bin Jeong, Gi Byoung Hwang, Alexander J. MacRobert, Ivan P. Parkin, Jae Hee Jung, Dong Yun Choi
Summary: This study presents a transparent and visible light-activated antibacterial surface material that can effectively inhibit healthcare-associated infections. The material utilizes a sol-gel and a visible light-activated photosensitizer to generate a photochemical antibacterial effect against different types of bacteria. It demonstrates excellent mechanical stability and biocompatibility.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Dong Uk Lee, Sang Bin Jeong, Byeong Jin Lee, Se Kye Park, Hyoung-Mi Kim, Jae Hak Shin, Seung Yeon Lee, Gunwoo Kim, Junghun Park, Gyu Man Kim, Jae Hee Jung, Dong Yun Choi
Summary: This study develops a novel coating based on petal-like nanostructures, which demonstrates high protection and disinfection efficiency on fabrics. It is of great importance for ensuring the safety of healthcare workers and managing contagious diseases in medical environments.
Article
Engineering, Environmental
Sang Bin Jeong, Dong Uk Lee, Byeong Jin Lee, Ki Joon Heo, Dong Won Kim, Gi Byoung Hwang, Alexander J. MacRobert, Jae Hak Shin, Hyun Sik Ko, Se Kye Park, Yong Suk Oh, See Jo Kim, Dong Yun Lee, Seung-Bok Lee, Inyong Park, Sang Bok Kim, Bangwoo Han, Jae Hee Jung, Dong Yun Choi
Summary: This study presents a nanocoating process for manufacturing antimicrobial and reusable mask filters. The nanocoating endows the filters with photobiocidal activity, triboelectric filtration capability, and washability, while maintaining their performance and durability under light irradiation. After washes with detergent, the filters still maintain their antimicrobial and filtration performance. This nanocoating provides a practical solution for tackling the COVID-19 pandemic.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Electrochemistry
Dong Uk Lee, Shivshankar Chaudhari, Seung Yong Choi, Myung Jun Moon, Min Young Shon
Summary: Magnesium alloy is limited in the industrial field due to its high electrochemical activity, leading to quick corrosion with oxygen in air. However, an anti-corrosion effect can be achieved by sealing a sol-gel coating on the defected conversion coating layer.
CORROSION SCIENCE AND TECHNOLOGY-KOREA
(2021)
Article
Electrochemistry
Nam Kyu Lee, Young Hoon Kim, Tae Gyu Im, Dong Uk Lee, MinYoung Shon, Myung Jun Moon
CORROSION SCIENCE AND TECHNOLOGY-KOREA
(2019)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)