Article
Chemistry, Analytical
Nobuhle Ndebele, Pinar Sen, Tebello Nyokong
Summary: Two cobalt phthalocyanine molecules were synthesized and used as electro-catalytic probes in the electrochemical oxidation of dopamine, showing improved sensitivity and limit of detection when conjugated with nitrogen-doped graphene quantum dots.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Velayutham Sudha, Velu Duraisamy, Natarajan Arumugam, Abdulrahman I. Almansour, Terence Xiaoteng Liu, Venkataraman Dharuman, Sakkarapalayam Murugesan Senthil Kumar
Summary: The spinel type of metal oxide decoration with a heteroatom-doped mesoporous carbon hollow sphere has been developed as an excellent electrocatalyst in sensor applications. The single-step hard template strategy utilizing cobalt precursor cobalt phthalocyanine enables the effective detection of dopamine. The Co3O4/NDHCS-0.2 material exhibits remarkable sensing performance due to its stable mesoporous hollow carbon sphere, high Co content, and presence of pyridine N centers.
ACS APPLIED NANO MATERIALS
(2023)
Article
Electrochemistry
G. Balkourani, A. Brouzgou, C. Lo Vecchio, A. S. Arico, V Baglio, P. Tsiakaras
Summary: In this study, Co and Fe catalysts supported onto N-doped ketjenblack (Co/KB-N and Fe/KB-N) were synthesized using a template-free method and examined for dopamine electrooxidation reaction. Co/KB-N exhibited higher performance in terms of activity, sensitivity, stability and selectivity in a pH value close to human's serum. The improved performance could be attributed to the formation of the Co3+/Co4+ redox pair and the presence of N, which promoted electron transfer rate and high selectivity of Co/KB-N.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Multidisciplinary
Gabriele Capilli, Yiwen Chen, Thomas Szkopek, Marta Cerruti
Summary: This study developed a 3D macroporous reduced graphene oxide scaffold with cobalt oxide particles selectively deposited, which allows water molecules to access catalytic particles but prevents the diffusion of ions such as chlorine. The electrodes generated oxygen from simulated seawater with high pH and exhibited low chlorine generation.
Article
Electrochemistry
Zhiyong Dong, Fangxin Du, Tesfaye Hailemariam Barkae, Kaixiang Ji, Fangshuo Liu, Dmytro Snizhko, Yiran Guan, Guobao Xu
Summary: For the first time, luminol electrochemiluminescence (ECL) generated by coupling the cathodic reduction of dissolved oxygen with subsequent anodic oxidation of luminol at cobalt phthalocyanine modified carbon paste electrode (CoPc-CPE) has been reported. The CoPc-CPE exhibited about 16-fold stronger ECL than the bare carbon paste electrode due to the excellent electrocatalytic activity of CoPc. The developed ECL system was successfully applied to the efficient sensing of dopamine with a fine linear range and a low detection limit.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Dasol Jin, Song Hee Lee, Youngmi Lee, Chongmok Lee, Myung Hwa Kim
Summary: This study presents a facile method for the fabrication of bimetallic oxide Co3V2O8 nanofibers, and investigates their electrochemical detection performance for ascorbic acid for the first time. These nanofibers exhibit high electrocatalytic activity and could serve as promising alternatives to costly noble metal catalysts.
Article
Materials Science, Multidisciplinary
Deepa Sebastian, R. Kala, K. P. Neethu Parvathy, D. P. Savitha
Summary: A functionalization strategy using DTPAN was employed to modify the fluorescence and bandgap properties of GQD, enabling sensitive detection of Pb2+ ions with a detection limit of 0.25 nM. Stern-Volmer analysis indicated both static and dynamic quenching mechanisms, while further studies suggested a possible electron transfer process between DTPAN and GQD. The developed sensor showed efficient performance in detecting Pb2+ ions in real water samples and had potential for use in simple analytical devices.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Engineering, Environmental
Yuhuan Wang, Jianyu Qiao, Shuqing Dong, Shijun Shao, Dengchao Wang
Summary: A simple, highly selective and sensitive photoelectrochemical detection strategy for Co2+ was developed based on the enhanced activity by nanoprecipitated CoPi on the Au nanoparticle decorated BiVO4 electrode. The new photoelectrochemical sensor has a low detection limit of 0.03 μM and wide detection range of 0.1-10 μM, and 10-6000 μM, with a high selectivity over other metal ions. This approach of enhanced catalytic activity by nanoprecipitation can be further extended to develop a variety of electrochemical, photoelectrochemical and optical sensing platforms for many other hazardous ions and biological molecules.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Charles Luhana, Philani Mashazi
Summary: The fabrication of electrochemical sensors with graphene oxide and cobalt tetra-amino phthalocyanine modified electrodes for the ultrasensitive simultaneous detection and determination of dopamine and paracetamol is reported. The sensors exhibited enhanced electrocatalytic activity and excellent sensitivity. Using differential pulse voltammetry (DPV) technique, the electrocatalytic oxidation peak currents of dopamine and paracetamol showed linear dependence with changes in concentrations, and the limits of detection were determined to be 0.095μM and 0.10μM, respectively. The fabricated sensors were successfully used for the determination of dopamine and paracetamol in synthetic urine samples with excellent percentage recoveries.
Article
Chemistry, Analytical
Rui Zhou, Bo Tu, Dacheng Xia, Hanping He, Zhiwei Cai, Nan Gao, Gang Chang, Yunbin He
Summary: The high-performance two-dimensional Ti3C2Tx MXene was successfully prepared and used for the modification of a glassy carbon electrode in this study. The modified Pt/Ti3C2Tx glassy carbon electrode was assembled with a monolayer graphene channel to form a transistor device, which exhibited a low detection limit and a wide detection concentration range for dopamine. The improved conductivity and hydrophilicity of Ti3C2Tx MXene, as well as its electrostatic adsorption of protonated dopamine and electrostatic repulsion of negatively charged interfering substances, contributed to the device’s selectivity.
ANALYTICA CHIMICA ACTA
(2022)
Article
Engineering, Chemical
Yujing Wang, Jian Chen, Junxia Gao, Hongshan Meng, Shouning Chai, Yanfei Jian, Limin Shi, Yanbin Wang, Chi He
Summary: The novel cathode made of macroporous graphene aerogel displayed excellent electrocatalytic activity in the electro-Fenton system, efficiently generating H2O2 for antibiotic degradation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Bo Wu, Minzhang Li, Rajendran Ramachandran, Gaoqiang Niu, Mingxiang Zhang, Changhui Zhao, Zongxiang Xu, Fei Wang
Summary: This paper reports a novel electrochemical biosensor based on a nanocomposite of cobalt phthalocyanine and graphene quantum dots for the simultaneous detection of dopamine and uric acid. The sensor exhibits low detection limits, remarkable performance, and stability, making it suitable for application in human urine samples.
ADVANCED MATERIALS INTERFACES
(2023)
Article
Nanoscience & Nanotechnology
Yibo Song, Siyuan Hu, Dongren Cai, Jingran Xiao, Shu-Feng Zhou, Guowu Zhan
Summary: This study immobilized cobalt phthalocyanine (CoPc) molecules on a Ce-based metal-organic framework (Ce-BTC) and converted it to mesoporous CeO2, achieving molecular-level dispersion of CoPc on the surface of CeO2. The resulting CoPc/CeO2 catalysts showed good CO oxidation performance. The mixing manner of Ce-BTC and CoPc significantly affected the physicochemical properties and catalytic performance, indicating the promising potential of Ce-BTC-mediated CoPc loading strategy for heterogenization of catalytic biomolecules.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Nanoscience & Nanotechnology
Yibo Song, Siyuan Hu, Dongren Cai, Jingran Xiao, Shu-Feng Zhou, Guowu Zhan
Summary: Immobilizing biomolecules on a metal oxide support can enhance catalytic activity and stability, with cobalt phthalocyanine molecules successfully anchored on a Ce-based metal-organic framework to produce CoPc/CeO2 catalysts exhibiting good CO oxidation performance.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Materials Science, Multidisciplinary
Gulsum Kocakulah
Summary: The aim of this study was to compare the electro-optical and dielectric properties of CoPc-doped CLC composites with pure CLC. It was found that the transmittance behavior of the samples varied with CoPc concentration, with the samples being transparent in the P-state and opaque in the FC-state. The dielectric constants and anisotropy of the composites also changed with CoPc concentration in the low frequency region. Based on these properties, CoPc-doped CLC composites are expected to be beneficial for optoelectronic devices.
Article
Chemistry, Physical
Xueying Song, Qian Sun, Li Gao, Wei Chen, Yufeng Wu, Yamin Li, Liqun Mao, Jing-He Yang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Physical
Zonggao Hu, Guoli Zhou, Li Xu, Jinghe Yang, Bing Zhang, Xu Xiang
APPLIED SURFACE SCIENCE
(2019)
Article
Chemistry, Physical
Jing-He Yang, Xueying Song, Xiaoxi Zhao, Yuke Wang, Yongpeng Yang, Li Gao
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2019)
Article
Nanoscience & Nanotechnology
Duo Yang, Li Gao, Jing-He Yang
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Multidisciplinary
Haiyang Wang, Caiyan Gao, Rui Li, Zhikun Peng, Jinghe Yang, Jie Gao, Yongpeng Yang, Shuaihui Li, Baojun Li, Zhongyi Liu
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2019)
Article
Chemistry, Multidisciplinary
Xiaoxi Zhao, Yanping Fan, Haiyang Wang, Caiyan Gao, Zhongyi Liu, Baojun Li, Zhikun Peng, Jing-He Yang, Baozhong Liu
Article
Chemistry, Physical
Jingyi Yang, Yanping Fan, Zhong-Li Li, Zhikun Peng, Jing-He Yang, Baozhong Liu, Zhongyi Liu
MOLECULAR CATALYSIS
(2020)
Article
Chemistry, Physical
Jing-He Yang, Miaomiao Chen, Xiuhong Xu, Suyu Jiang, Yatao Zhang, Yinghua Wang, Ying Li, Jie Zhang, Duo Yang
Summary: The study presents a controllable synthetic strategy for CuO-Ni(OH)2-d nanosheets, which exhibit excellent activity and stability in urea electrooxidation reactions. CuO-Ni(OH)2-d also shows higher current density compared to commercial catalysts.
APPLIED SURFACE SCIENCE
(2021)
Review
Chemistry, Physical
Jinqi Li, Jie Zhang, Jing-He Yang
Summary: This article reviews the recent research progress of nickel-based urea electrooxidation catalysts and discusses their applications in wastewater remediation, energy conversion, and other fields. The development prospects and challenges of nickel-based catalysts and their practical applications are also discussed.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jie Zhang, Guanpeng Li, Suyu Jiang, Jing-He Yang
Summary: This research investigated the mechanism of photocatalytic water splitting by RuO2-modified GaZnNO solid solution. It was found that H2O2 molecules were the intermediates and (OH)-O-center dot radicals were generated as byproducts. Ru deposition enhanced the photocatalytic activity.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Liping Ren, Duo Yang, Jing-He Yang
Summary: Transition metal phosphides (TMPs) are promising catalysts for hydrogen evolution reaction (HER), and alloying with precious metals can effectively reduce the cost and improve the performance. This study synthesized MnRuPOGO-500 nano-catalysts with excellent HER performance in both acidic and basic media. The doping of manganese in the MnP-Ru2P alloy showed a synergistic modulation effect, enhancing the HER performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Multidisciplinary
Min Zhang, Jing-He Yang
Summary: This review highlights the research progress of mono-metal and bimetallic catalysts supported on mesoporous silica materials for the hydrogenation of furfural to various high value-added chemicals in gas or liquid phase. Feasible suggestions to improve catalyst activity and product selectivity are also proposed.
Article
Chemistry, Physical
Yan Hao, Dajie Zhao, Wen Liu, Min Zhang, Yixiao Lou, Zhenzhen Wang, Qinghu Tang, Jinghe Yang
Summary: Selective dehydrogenation of ethanol to acetaldehyde is an important pathway for acetaldehyde production. In this study, a Cu/KIT-6 catalyst with ultra-high metal dispersion was prepared by electrostatic adsorption. The confinement effect of mesoporous nanostructures and the protective effect of ammonia water contributed to the superior ethanol conversion and full acetaldehyde selectivity of the catalyst.
Review
Chemistry, Multidisciplinary
Rong Wang, Min Zhang, Jie Zhang, Jing-He Yang
Summary: Aromatic hydrocarbon catalytic hydrogenation is an effective method to reduce the toxicity and increase the value of aromatic hydrocarbons. Supported metal catalysts, especially nickel-based catalysts, have higher catalytic activity and selectivity. The research progress of nickel-based catalysts and the development prospects and challenges of non-precious metal catalysts for aromatic hydrocarbon catalytic hydrogenation have been reviewed. In addition, the sulfur tolerance and hydrogen storage properties of catalysts for aromatics are discussed.
Article
Chemistry, Multidisciplinary
Qian Sun, Xueying Song, Li Gao, Wei Chen, Yamin Li, Liqun Mao, Jing-He Yang
