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
Chemistry, Physical
K. M. Parida, Lekha Paramanik, Sabiha Sultana
Summary: This study demonstrated the efficient nitrogen reduction to ammonia using a combination of cobalt titanate and nitrogen-doped reduced graphene oxide under visible light irradiation. By optimizing the concentration of nitrogen-doped reduced graphene oxide, the production of ammonia was significantly improved, paving the way for the development of highly active catalyst materials for sustainable energy conversion in the future.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Tayyaba Najam, Shumaila Ibraheem, Muhammad Altaf Nazir, Asma Shaheen, Amir Waseem, Muhammad Sufyan Javed, Syed Shoaib Ahmad Shah, Xingke Cai
Summary: This study discusses a novel non-precious metal-based catalyst which shows remarkable performance in oxygen/hydrogen evolution reactions within nitrogen-doped carbon nanotubes, indicating potential for efficient water-splitting operations.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Biochemistry & Molecular Biology
Lidia Magerusan, Florina Pogacean, Stela Pruneanu
Summary: Due to the safety concerns associated with acetaminophen, a quick and environmentally friendly method using direct voltage application in saltwater has been developed to synthesize nitrogen-doped graphene (exf-NGr). The exf-NGr-modified electrode shows excellent performance in acetaminophen detection and quantification, with good reproducibility and stability, as well as wide detection range capabilities.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2022)
Article
Chemistry, Physical
Chi-Tien Hsieh, Yu-Tzu Tang, Yeu-Shiuan Ho, Wei-Kai Shao, Mu-Jeng Cheng
Summary: In this study, the possibility of using N-doped graphene as a catalyst for direct methane oxidation to methanol was evaluated using density functional theory. Results showed that doping graphene with two nitrogen atoms can greatly reduce the overall kinetic barrier and facilitate the reaction. This research is of great importance for replacing the oxygen evolution reaction in artificial photosynthesis.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Saudagar Dongare, Neetu Singh, Haripada Bhunia
Summary: Increasing atmospheric CO2 has negative effects on global climate, prompting interest in utilizing CO2 for value-added products. A nanostructured electrocatalyst of Cu NPs supported on NGN was optimized for high ECR activity. The study showed that Cu-20/NGN exhibited the highest catalytic activity among all tested electrocatalysts, with improved electrode properties and performance validated through potential-controlled electrocatalysis.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Nanoscience & Nanotechnology
Lulu Wen, Xinyang Li, Rui Zhang, Huawei Liang, Qitao Zhang, Chenliang Su, Yu-Jia Zeng
Summary: Introducing oxygen vacancies is considered an effective method to accelerate the nitrogen reduction reaction, and Zn-Co3O4 nanopolyhedrons with abundant oxygen vacancies and high catalytic performance have been successfully prepared in this study. The catalyst shows high ammonia yield and faradaic efficiency, as well as excellent stability.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Emad S. Goda, Aafaq Ur Rehman, Bidhan Pandit, Ahmed Al-Shahat Eissa, Sang Eun Hong, Kuk Ro Yoon
Summary: The core-shell structured material fabricated from aluminum-doped cobalt sulfide, encapsulated by nitrogen-doped graphene, showed promising supercapacitive features as a cathode material for solid-state asymmetrical supercapacitor devices. The material exhibited high specific capacity, long cycle life stability, and remarkable retention rate, making it a potential candidate for efficient energy storage electrodes in industrial applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Analytical
Zhenfei Chen, Yan Zhang, Yongqiang Yang, Xuerong Shi, Lu Zhang, Guangwen Jia
Summary: A high-performance nitrogen-doped holey graphene electrochemical sensor has been successfully developed for the determination of the organophosphorus pesticide methyl parathion. The sensor showed ultralow detection limits and a wide linear range, with pyrrolic-N in the N-HG playing a critical role in enhancing electron transfer and electrocatalysis. The sensor exhibited excellent selectivity, accuracy, and satisfactory recoveries for real samples, indicating great potential for applications in environmental analysis and bio-sensing.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Physical
Mei Chen, Zehui Fan, Lunhong Ai, Jing Jiang
Summary: The study demonstrated the superior OER performance of RuCoOx-RuCo-NC electrocatalysts in acidic environments through rational design and synthesis; these optimized catalysts showed a small overpotential and excellent long-term durability.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Applied
E. A. Reynoso-Soto, R. M. Felix-Navarro, Y. Y. Rivera-Lugo, A. Lozano-Garcia, D. A. Dominguez-Vargas, C. Silva-Carrillo
Summary: This work reports the synthesis of nitrogen-doped graphene in one step and demonstrates its higher conductivity compared to graphene oxide and reduced graphene. It also shows the application of nitrogen-doped graphene in glucose determination.
TOPICS IN CATALYSIS
(2022)
Article
Engineering, Chemical
Guanrong Yang, Yuhang Li, Siyuan Yang, Jihai Liao, Xin Cai, Qiongzhi Gao, Yueping Fang, Feng Peng, Shengsen Zhang
Summary: A novel magnetic nanomaterial Co@CoO/NC was prepared through a one-step annealing method and showed efficient adsorption capacity for tetracycline (TC) and rhodamine B (RhB) in wastewater. The material could maintain good adsorption performance for TC and RhB after multiple repetitions, making it a promising solution for environmental remediation.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Inorganic & Nuclear
Methasit Juthathan, Teera Chantarojsiri, Kittipong Chainok, Teera Butburee, Patchanita Thamyongkit, Thawatchai Tuntulani, Pannee Leeladee
Summary: New hybrid catalysts based on molecularly dispersed nickel complexes on N-doped graphene were developed for electrochemical CO2 reduction (ECR). The nickel complexes with N-H groups showed current enhancement in the presence of CO2, while the absence of N-H groups resulted in no change. All three nickel complexes were successfully immobilized on nitrogen-doped graphene (NG) and exhibited satisfactory CO2-to-CO reduction. The N-H moiety from the ligand was found to be less important in the heterogeneous aqueous system.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Shuaijie Li, Jianzhi Wang, Jingyuan Wang, Chen Chen, Ziyi Guo, Ning Cai, Yanan Xue, Faquan Yu
Summary: By utilizing nanoparticles of Prussian blue analogue and nitrogen-carbon doped CoFe2O4 species, the research team has successfully enhanced the activity and stability of the oxygen evolution reaction. This catalyst shows superior activity compared to RuO2 in alkaline medium and provides a sustained current density over a continuous working period.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Chemistry, Analytical
Zhixue Yu, Hui Wang, Yiguang Zhao, Fan Zhang, Xiangfang Tang, Benhai Xiong
Summary: An electrochemical biosensor was developed for detecting Ca2+ concentration through electrode modification and signal amplification. The biosensor showed promising results in determining the concentration of Ca2+ in dairy cow serum.
Article
Chemistry, Analytical
Yishan Fang, Haiqiang Deng, Xinjian Huang, Lishi Wang
Summary: The novel approach utilizes FT-SC-SV combined with ITIES interface for selective determination of cations or anions, providing a simple and sensitive platform for detection of a wide range of ions and neutral molecules. The method demonstrates feasibility and reliability in discriminating and quantifying apparently indistinguishable ion transfer, suggesting a new way for analytical detection of redox inactive ions.
ANALYTICAL CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Xiaolin Zhong, Jianzhi Huang, Min Wang, Lishi Wang
Summary: The novel conducting polymer/metal/metal oxide composite as HER catalyst shows enhanced electrocatalytic activity, with an overpotential of 168 mV at 10 mA . cm(-2) and low Tafel slope of 79 mV. dec(-1) in 0.5 M H2SO4, which is significantly better than traditional Au/Co3O4 catalyst. The multifunctionality of polythionine in boosting the HER performance of nano electrocatalysts is also demonstrated by the enhanced performance of N-doped reduced graphene (N-rGO) with polythionine layers.
Article
Chemistry, Analytical
Jie Yang, Qiang Zeng, Lishi Wang
Summary: A new strategy has been developed for direct chirality fixation of macrocyclic hosts pillar[5]arene using electrochemical polymerization. The resulting chiral nanofiber-like crystalline pillar[5]arene-based polymers show significant circular dichroism signals and have been used as a photoelectrochemical chiral sensor for identifying and determining L- and D-ascorbic acid. This work provides a promotional strategy for building a PEC chiral recognition platform based on pillararenes, demonstrating a broad chiral detection range for L-AA.
ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Silan Bai, Cheng Liu, Lishi Wang
Summary: By electrochemically synthesizing silver wire within a nanopipette using a liquid-liquid interface, the i-t curve characterizes the growth state of the silver wire, with a higher rate of current increase indicating faster growth. The shape of the nanopipette also influences the growth of the silver wire, with larger diameters leading to multibranched structures and smaller diameters resulting in fewer branches.
Article
Chemistry, Analytical
Yamin Ma, Cheng Liu, Lishi Wang
Summary: A strategy for fast analysis of ion transfer/facilitated ion transfer in femtoliter water-in-oil droplets has been established. The study demonstrates that the half-wave potential is directly related to the transfer Gibbs free energy and logarithmic concentration of ions. The behavior of protamine transfer inside a single droplet has been thoroughly investigated, revealing significant differences under different conditions.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Rui Zhang, Xuye Liu, Qiang Zeng, Huanhuan Shen, Lishi Wang
Summary: This study reports a nanopore-based strategy to evaluate and compare the catalytic ability of single MnO2 catalyst particles with different morphologies by monitoring the generated O-2 bubbles from the catalytic decomposition of H2O2.
Article
Chemistry, Multidisciplinary
Zhimin Gao, Qiang Zeng, Min Wang, Lishi Wang
Summary: In this study, 8-hydroxyquinoline (8-HQ) was successfully detected using a poly(tannic acid) (PTA) modified electrode, which exhibited excellent electrocatalytic activity and stability. The sensor showed satisfactory results when applied to real hair conditioner samples.
Article
Nanoscience & Nanotechnology
Xinrong Guo, Jie Yang, Yubo Wei, Lishi Wang, Jiang Pi
Summary: Graphitic carbon nitride quantum dots (g-C3N4 QDs) are synthesized and used for trace analysis of Ag(I) and cysteine in a dual-mode fluorescence switching platform. A high selectivity and sensitivity dual-mode fluorescence switching sensor is developed based on the interesting reaction mechanism, and it shows excellent analytical performance in natural samples.
ACS APPLIED NANO MATERIALS
(2022)
Article
Electrochemistry
Yongtao You, Silan Bai, Yamin Ma, Cheng Liu, Lishi Wang
Summary: This study introduces a nanoscale soft sensor constructed using the interface between two immiscible electrolyte solutions for detecting chlorpromazine and promethazine drugs. The results show that this sensor method has good accuracy and reliability, and can be applied in drug determination and kinetics studies.
ELECTROCHIMICA ACTA
(2022)
Article
Chemistry, Analytical
Silan Bai, Yongtao You, Xiangping Chen, Cheng Liu, Lishi Wang
Summary: In this study, an approach to track the process of autorepeating bipolar reactions and hydrogen evolution reaction (HER) on a micro gold bipolar electrode (BPE) is established. The current response shows a periodic behavior with three regions: the bubble generation region (I), the bubble rupture/generation region (II), and the channel opening region (III). Finite element simulations are used to reveal the underlying thermodynamic mechanism. This research provides insights into the physicochemical mechanism in nanoscale confinement and offers a potential candidate for studying catalytic capability at the single particle level.
ANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Cheng Liu, Yamin Ma, Zhidan Xu, Yongtao You, Silan Bai, Junmin Nan, Lishi Wang
Summary: A new subtype of nano-impacts by emulsion droplets via reorganization of the electric double layer (EDL) at the liquid/ liquid interface (LLI) is reported. This subtype shows anodic, bipolar, and cathodic transient currents with a potential of zero charge (PZC) dependence, revealing the non-faradic characteristic of single fusion impacts. In addition, the absolute integrated mean charge is proportional to the Galvani potential at the ITIES, indicating that the EDL at the LLI may obey the discrete Helmholtz model. The exact PZC point is interpolated from the fitting curve, and the droplet size distribution is estimated from the integrated charge distribution. Moreover, the different values of Epzc between single fusion impacts of MgCl2 droplets and pure water droplets is due to the specific absorption between Mg2+ and antagonistic anion in the organic phase. The influence of the concentration of the supporting electrolyte is also investigated. The above work gives physicochemical insights into the EDL at the micropipette-supported LLI and provides potential application to measure micro/nanoscale heterogeneous media without catalytic, reactive, or charge-transfer activity via impact experiments at LLI.
JOURNAL OF PHYSICAL CHEMISTRY B
(2022)
Article
Chemistry, Multidisciplinary
Rui Zhang, Qiang Zeng, Xuye Liu, Lishi Wang
Summary: Construction of nanoporous arrays is crucial for their development in sensing, energy conversion, and nanofluidic devices. In this study, an inorganic and non-crystalline mesoporous silica SBA-15 was synthesized in situ to construct a multichannel array structure, GP-SBA-15, and its ion transport properties were characterized using electrochemical methods. The results showed rapid ion accumulation and slow redistribution in the surface-charged nanochannels, and the high/low currents were attributed to ion accumulation/depletion in the channels. Finite element simulation was used to investigate the effects of surface charge and pore size on ion rectification and concentration distribution. The study also demonstrated the presence of short straight channels and long bending channels in GP-SBA-15 using voltage-independent resistance pulse signals during BSA translocation. Overall, this study provides important insights into ion transport, structure description, and sensing potential of GP-SBA-15.
Article
Materials Science, Biomaterials
Junhui Xiao, Siqi Qiu, Qiufeng Ma, Silan Bai, Xinrong Guo, Lishi Wang
Summary: In this study, a near-infrared II fluorescent probe targeting HER-2-positive breast cancer was constructed and compared with a similar structure probe. The results showed that the constructed probe had stronger fluorescence, better targeting ability, and comparatively faster metabolism, highlighting its potential in intraoperative breast cancer navigation.
JOURNAL OF MATERIALS CHEMISTRY B
(2023)
Article
Chemistry, Analytical
Xiongtao Yu, Bowen Jiang, Lishi Wang
Summary: In this study, we constructed a signal-on electrochemical platform for detecting the MnSOD gene using DNA electrochemical detection technology. The sensor showed excellent specificity and sensitivity, allowing for fast and simple detection of different DNA sequences. This research has significant implications for disease outbreaks and early clinical diagnosis of gene-related diseases.
ANALYTICAL METHODS
(2022)
Article
Chemistry, Analytical
Qiong Hu, Yishan Fang, Xiongtao Yu, Jianzhi Huang, Lishi Wang
Summary: The novel ferrocene-linked metal-covalent organic polymer (MCOP-NFC) synthesized in this study acts as an efficient artificial enzyme for mimicking peroxidase, with good stability in harsh chemical environments. A highly sensitive dual channel detection method for hydrogen peroxide was developed based on the peroxidase-like activity of MCOP-NFC, with a colorimetric detection limit of 2.1 μM and an electrochemical detection limit as low as 0.08 μM.