Article
Chemistry, Analytical
Rui Zou, Yanjun Lin, Chao Lu
Summary: This study developed a nitrogen vacancy (NV) engineering strategy to improve the electrochemiluminescence (ECL) performance of graphitic carbon nitride (CN), achieving amplification in ECL intensity and stability. NVs were found to facilitate electron transfer and inhibit electrode passivation in CN-NVs.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Lichan Chen, Mengxi Zhu, Xiaomeng Zheng, Yuting Zhong, Xiaodi Zhu
Summary: This paper summarizes the advances in nCN ECL and presents various strategies to improve its performance, including intensity enhancement, stability improvement, lowering potential, tailoring wavelength, and extending duration. The strategies are classified into formation of functional nanocomposites and molecular engineering. In addition, the current challenges and future possibilities are discussed.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yazhou Zhang, Tianhao Wang, Botong Zheng, Jinwen Shi, Chongze Cai, Liuhao Mao, Cheng Cheng, Shichao Zong, Xu Guo, Qingyun Chen
Summary: This study presents a novel method for preparing g-C3N4 photocatalyst with a hollow tube-like morphology and porous surface using EDTA-involved hydrothermal treatment. The hollow and porous structure shortens the migration distance of photo-generated carriers, increases the photocatalytic reactive sites, and enhances the catalytic hydrogen production activity.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Lichan Chen, Hongzhi Guo, Libing Tian, Shu-Feng Zhou
Summary: In this study, graphitic carbon nitride (g-CN) was molecularly engineered with phenyl groups to enhance its electrical conductivity. The resulting Ph-CN nanosheets (Ph-CNNS) exhibited stable and strong cathodic electrochemiluminescence (ECL) emission, which was used to develop an ECL immunosensor for the detection of cardiac Troponin I (cTnI). The ECL immunosensor showed promising performance in terms of linear response, detection limit, specificity, reproducibility, and long-term stability.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Physical
Siyu Wen, Luobin Sang, Guang Yang, Xin He, Jiaqi Meng, Daiyu Song, Yuxin Yang
Summary: This study presents a facile strategy to synthesize ultrasmall silver-decorated carbon-deficient g-C3N4 (Ag/D-UCN) photocatalyst using in-situ citric acid/AgNO3-assisted method. The Ag/D-UCN catalyst exhibits excellent performance in photocatalytic oxidation of organic pollutants and photocatalytic reduction for H2 evolution. The synergistic effect of ultrasmall Ag and carbon vacancy in Ag/D-UCN enhances light harvesting capacity and promotes fast charge separation, leading to its outstanding photocatalytic redox activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Electrochemistry
Xiaolong Fu, Ju Huang, Xiaojing Lai, Jiefeng Rong, Guomin Qi, Zhenyu Lin, Fengfu Fu, Yongqiang Dong
Summary: Electrochemiluminescence (ECL) of graphitic carbon nitride nanosheets (CNNSs) has gained extensive interest, but the poor ECL stability of CNNSs has hindered its application. This study investigates the mechanism affecting ECL stability and proposes effective methods to improve it.
ELECTROCHIMICA ACTA
(2023)
Review
Chemistry, Multidisciplinary
Xinnan Yu, Sue-Faye Ng, Lutfi Kurnianditia Putri, Lling-Lling Tan, Abdul Rahman Mohamed, Wee-Jun Ong
Summary: Graphitic carbon nitride (g-C3N4) is an ideal metal-free photocatalyst for artificial photosynthesis, but its original structure suffers from limitations which can be significantly improved through defect engineering for enhanced photocatalytic activity, holding great significance for solar energy conversion advancements.
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
Biophysics
Weijia Sun, Nuo Zhang, Xiang Ren, Dan Wu, Yue Jia, Qin Wei, Huangxian Ju
Summary: This study successfully prepared a biosensor for detecting miRNA-21, a potential biomarker for breast cancer. The biosensor coated the electrode with a mesoporous silica encapsulated self-enhanced emitter, enabling sensitive detection of miRNA-21. The method demonstrated good accuracy and reproducibility, providing a new approach for ultra-sensitive detection of miRNA and promoting breast cancer diagnosis.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Chemistry, Multidisciplinary
Yajie Jiao, Rongjing Hu, Qian Wang, Fengfu Fu, Lichan Chen, Yongqiang Dong, Zhenyu Lin
Summary: The effects of defect states on the fluorescence and electrochemiluminescence properties of graphite phase carbon nitride were systematically investigated for the first time. The study found that decreasing the density of defect states can increase the fluorescence quantum yield, while increasing the density of defect states can make the fluorescence spectra red shift. Additionally, increasing the density of CN-defect states and decreasing the density of C-defect states are important to improve the electrochemiluminescence activity.
CHEMISTRY-A EUROPEAN JOURNAL
(2021)
Article
Chemistry, Analytical
Seyyed Mehdi Khoshfetrat, Pegah Hashemi, Abbas Afkhami, Ali Hajian, Hasan Bagheri
Summary: The study introduces a strategy using high catalytic activity artificial enzyme mimics for detecting biomarkers, successfully achieving detection of PSA with high sensitivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Environmental Sciences
Mani Preeyanghaa, Vasudevan Vinesh, Bernaurdshaw Neppolian
Summary: Hierarchical CN nanorods with carbon vacancy synthesized via ultrasound-assisted thermal polycondensation method exhibit excellent sonophotodegradation efficiency towards TC antibiotic under ultrasonic irradiation and visible light illumination.
Article
Chemistry, Analytical
Morteza Hosseini, Elahe Hashemian, Foad Salehnia, Mohammad Reza Ganjali
Summary: In this work, a turn-on electrochemiluminescence (ECL) sensor based on graphite carbon nitride (g-C3N4) was developed for sensitive quantification of melatonin. The sensor demonstrated a wide linear response range, low detection limit, and successful application in the detection of melatonin in human saliva samples.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Biochemical Research Methods
Yuyang Lu, Shu Han, Yachao Xi, Shuhan Yang, Tao Zhu, Binhan Niu, Fang Li
Summary: In this study, TiO2 nanoparticles modified graphitic carbon nitride were prepared, exhibiting potential-resolved multicolor electrochemiluminescence (ECL) emission. The synthesized composite showed dual-peak ECL emission under cyclic voltammetry scanning, allowing for sensitive quantitative detection of rutin. This work provides a simple method to broaden the potential applications of g-C3N4-based nanocomposites for ECL imaging sensing and light-emitting devices.
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
(2023)
Article
Engineering, Environmental
Jianchao Wang, Hongxin Li, Dongbei Yue
Summary: The study demonstrates that urea-derived graphitic carbon nitride has high adsorption capacity for humic substances, influenced by calcination temperature and time, the amount of amino groups, and aromaticity. The adsorption affinity of HSs is mainly affected by pH, alkali metals, and alkali earth metals.
JOURNAL OF HAZARDOUS MATERIALS
(2022)