Article
Chemistry, Analytical
Hossein Dastangoo, Mir Reza Majidi, Maryam Kalantar Hormozi
Summary: In this study, palladized aluminum was used as a new type of solid electrode for the determination of copper using the differential pulse anodic stripping voltammetry (DPASV) technique. The preparation of the electrode involved electroless deposition of metallic palladium on the aluminum surface, resulting in good sensitivity and selectivity. Various experimental variables were optimized, and under the optimal conditions, a linear calibration graph was achieved for copper concentration determination. The proposed method showed no interference and was successfully applied for determining copper content in nutritional supplement tablets.
MICROCHEMICAL JOURNAL
(2023)
Article
Chemistry, Analytical
Chengjian Wang, Qijian Niu, Dong Liu, Xiuxiu Dong, Tianyan You
Summary: It is significant to develop electrochemical sensors for heavy metal ions detection using novel functional nanomaterials. In this study, a novel Bi/Bi2O3 co-doped porous carbon composite was prepared and characterized. An electrochemical sensor for Pb2+ detection was constructed by modifying the composite on the surface of a glassy carbon electrode. The sensor showed a wide linear range, low detection limit, good stability, reproducibility, and selectivity, and its reliability was confirmed by comparison with ICP-MS method.
Article
Electrochemistry
Qiao Liu, Liang Liu, Michel Perdicakis, Alain Walcarius
Summary: This study presents a new approach to electrochemical stripping analysis, where the target analyte is indirectly analyzed based on the signal obtained from the counter electrode, using an ultramicroelectrode to take advantage of the polarization effect. By utilizing this method, the resolution of signals can be improved and background interference can be reduced, offering a new angle of electroanalysis.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Vrysiida Partheni, Konstantinos Svarnias, Anastasios Economou, Christos Kokkinos, Peter R. Fielden, Sara J. Baldock, Nicholas J. Goddard
Summary: This work presents a sequential injection analysis method for simultaneous determination of Pb(II), Cd(II) and Zn(II) using an injection-moulded electrochemical fluidic chip. The method demonstrates high sensitivity and reliability, with quantification limits of 2.8 μg L-1 for Pb(II), 3.6 μg L-1 for Cd(II) and 4.2 μg L-1 for Zn(II). Additionally, the method was successfully applied to trace metal determination in fish food samples.
Article
Chemistry, Analytical
Iulia Gabriela David, Alexandra-Gabriela Oancea, Mihaela Buleandra, Dana Elena Popa, Emilia Elena Iorgulescu, Adela Magdalena Ciobanu
Summary: Diosmin is a naturally occurring flavonoid that can be quantified through a disposable pencil graphite electrode. The oxidative process involves two irreversible steps.
Article
Electrochemistry
Elena Romanovskaia, Peter Slovensky, S. Marzieh Kalantarian, Lila Laundry-Mottiar, Valentin Romanovski, Maros Halama, Michael Auinger, Yolanda S. Hedberg
Summary: The stability and reactivity of gold nanoparticles in the body are influenced by their surface properties and size. Smaller nanoparticles show stronger interactions with L-cysteine.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Heleni Panagopoulou, Anastasios Economou, Christos Kokkinos
Summary: This paper introduces a 3D-printed microfluidic device for the determination of Pb(II) and Cd(II) using SIA-ASV method. The device enables online preconcentration and static solution detection, achieving low detection limits and good repeatability.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Multidisciplinary
Gurjaspreet Singh, Sanjay Sharma, Akshpreet Singh, Ranjeet Kaur, Pawan, Mohit, Shweta Rana, Subash Chandra Sahoo, Amarjit Kaur
Summary: This study reports the first synthesis of aryl-alkyl ether functionalized silatrane for the selective recognition of Al3+ ions using cyclic voltammetry. The prepared compounds were well characterized and their potential as receptors for Al3+ ions was demonstrated. The real-time application of the synthesized sensors was confirmed through the detection of Al3+ ions in tea leaves.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Analytical
Sayed A. M. Marzouk, Aisha R. Alyammahi, Pablo Fanjul-Bolado
Summary: This paper describes three novel cells for electrochemical measurements, offering convenient electrical connection, excellent SPEC sealing, and versatility for various applications with different sample volumes. Additionally, a new experimental method is presented.
ANALYTICAL CHEMISTRY
(2021)
Article
Electrochemistry
Nelia A. Sanga, Nazeem Jahed, Zandile Leve, Emmanuel I. Iwuoha, Keagan Pokpas
Summary: This study developed a novel method for simultaneous detection of Cd2+, Cu2+, Pb2+, and Zn2+ concentrations using electrochemically reduced graphene oxide (ERGO) sheets in combination with low-cost disposable pencil graphite rods and in situ plated thin mercury films (HgF). The technique showed improved sensitivity and negligible intermetallic interferences, and was successfully applied to trace metal determination in tap water.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Electrochemistry
Kequan Xu, Clara Perez-Rafols, Maria Cuartero, Gaston A. Crespo
Summary: The increasing usage of silver and silver nanoparticles has driven scientific interest in methods for monitoring silver, particularly in the context of environmental impact. Electrochemical sensors, with their advantageous properties of low cost, fast measurements, and adaptability to portable instrumentation, are well-suited for silver monitoring. Significant improvements in analytical performance have been achieved in the last decade, with a focus on new protocols, selective receptors, and electrode materials.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Adam Morris, Nuria Serrano, Jose Manuel Diaz-Cruz, Avi Bendavid, Miao Chen, Mikko Vepsalainen
Summary: The study demonstrated the superior performance of a vibrating boron-doped diamond electrode in combination with the ASV method for the analysis of ultralow concentrations of Cd(II) in water, without the need for surface modification or regular replacement of the electrode, making it suitable for on-site and online heavy metal analysis.
ANALYTICA CHIMICA ACTA
(2021)
Article
Chemistry, Analytical
Chyh Shyang Ong, Nurul Hanisarina binti Zaharum, Noorhashimah Mohamad Nor, Abdul Latif Ahmad, Qi Hwa Ng, Khairunisak Abdul Razak, Siew Chun Low
Summary: The sensitivity of screen-printed electrochemical sensors strongly depends on the selection of appropriate modifiers that optimize the chemical and physical properties of the sensor surface. This study investigated the impact of chemical and physical factors on the sensitivity of modified sensors for detecting lead and cadmium. The study found that metal-attracting functional groups and surface charge were the dominant factors affecting the sensitivity, while the physical morphology of the sensor surface had a minimal effect. The findings provide valuable insights for designing sensors for heavy metal detection.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Burcu Yaman, Buse Tugba Zaman, Sezgin Bakirdere, Yusuf Dilgin
Summary: This novel method combines differential pulse anodic stripping voltammetry with magnetic nanoparticle based dispersive solid phase microextraction, providing an efficient and accurate way to detect Cd(II) in water samples with good repeatability. Recovery values indicate the successful application of this approach for Cd(II) determination.
Review
Electrochemistry
J. Lavanya, R. Srinivasan, Ravi A. Sankar, M. V. Varsha, N. Gomathi
Summary: MOFs composite materials have shown great potential in electrochemical sensing, allowing for effective detection of hazardous heavy metal ions in aqueous media. These materials possess abundant active sites, enhanced electrical conductivity, and increased chemical stability, providing a synergistic effect for the detection of HMIs.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Jianhang Sun, Jiangnan Liu, Han Chen, Xu Han, Yun Wu, Jin He, Ce Han, Guocheng Yang, Yuping Shan
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Nanoscience & Nanotechnology
Jingjing Wang, Meng Zhang, Xipeng Tan, Tong Liu, Guijun Bi, Hua Li, Shu Beng Tor, Erjia Liu
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2020)
Article
Engineering, Multidisciplinary
Adrian Wei-Yee Tan, Jun Yan Lek, Wen Sun, Ayan Bhowmik, Iulian Marinescu, Pio J. Buenconsejo, Zhili Dong, Erjia Liu
COMPOSITES PART B-ENGINEERING
(2020)
Article
Engineering, Mechanical
Jingjing Wang, Meng Zhang, Bing Wang, Xipeng Tan, Wen Jin Wu, Yang Liu, Gui Jun Bi, Shu Beng Tor, Erjia Liu
Summary: The influence of surface porosity on the fatigue life of additively manufactured EH36 steel samples was studied using numerical methods with simulative AM 3D pores. Factors such as pore size, shape, position, and orientation had significant effects on the crack initiation stage during fatigue testing. Different algorithms showed varying results, with stress-life method providing higher estimations than strain-life method, becoming invalid in severe stress concentration situations.
INTERNATIONAL JOURNAL OF FATIGUE
(2021)
Article
Nanoscience & Nanotechnology
Shubham Chandra, Xipeng Tan, R. Lakshmi Narayan, Marion Descoins, Dominique Mangelinck, Shu Beng Tor, Erjia Liu, Gerald Seet
Summary: The study investigates the nanometer-scale microstructural evolution in an additively manufactured Re-free Ni-based superalloy with single crystal compositions. It finds that nano-scale primary γ' precipitation leads to exceptional microhardness, and ultra-fine γ' precipitates are observed at the bottom layers of the samples, contradicting previous consensus on hierarchical γ' phase evolution in such alloys.
SCRIPTA MATERIALIA
(2021)
Article
Chemistry, Physical
Xu Song, Xiao-Zhe Jin, Wei Zhai, Adrian Wei-Yee Tan, Wen Sun, Feng Li, Iulian Marinescu, Erjia Liu
Summary: The study proposes a method to predict the adhesion strength of coatings, which is significant in engineering practice. Experimental validation shows that particle temperature has the most significant impact on coating adhesion strength, followed by particle impact speed. It is important to pay attention to substrate temperature control to achieve the optimal window for coating deposition.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Jingjing Wang, You Xiang Chew, Wen Jin Wu, Wei Jing, Xipeng Tan, Erjia Liu, Guijun Bi, Shu Beng Tor, Sharine Ying Jia Tan, Yuan Hao Lee, Aziz Merchant, Fei Weng, Yang Liu
Summary: This study utilized the DLD process to print high strength low alloy steel samples in four different orientations, and evaluated their microstructures, mechanical properties, and fracture behavior through various tests. The results demonstrated that the printed samples met ASTM standards, with microstructure closely correlated with mechanical properties, which could be tuned by controlling printing parameters and scanning method.
MATERIALS CHARACTERIZATION
(2021)
Correction
Chemistry, Physical
Xiao-Zhe Jin, Xu Song, Wei Zhai, Adrian Wei-Yee Tan, Wen Sun, Feng Li, Iulian Marinescu, Erjia Liu
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Hui Liu, Jiangnan Liu, Ziqi Xu, Weiying Zhou, Ce Han, Guocheng Yang, Yuping Shan
Summary: The development of efficient and non-precious electrocatalysts for hydrogen production via water electrolysis is crucial for meeting global energy demand and addressing the challenges of climate change. This study successfully synthesized a new heterostructured material, Ni/V-MoO2/NF, demonstrating excellent HER performance under alkaline conditions, with potential for designing high-performing V-doped heterostructured electrocatalysts.
APPLIED SURFACE SCIENCE
(2022)
Article
Materials Science, Coatings & Films
Kaiqiang Wu, Wen Sun, Adrian Wei-Yee Tan, Iulian Marinescu, Erjia Liu, Wei Zhou
Summary: In this study, Inconel 625 coatings were successfully deposited on 6061 aluminum alloy using high-pressure cold spray, exhibiting excellent mechanical and tribological properties. The coatings showed good adhesion strength, high and uniform hardness values, and tribological performance influenced by normal load and sliding velocity.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Kaiqiang Wu, Sin Wei Chee, Wen Sun, Adrian Wei-Yee Tan, Sung Chyn Tan, Erjia Liu, Wei Zhou
Summary: Inconel 713C, commonly known for its poor weldability, was successfully deposited on Inconel 718 substrate using a high-pressure cold spray system in this study. The cold-sprayed coating exhibited low porosity and refined grain structures, with significantly higher microhardness compared to the substrate. Wear tests revealed that the cold-sprayed Inconel 713C coating had three times higher wear resistance than Inconel 718 substrate, showcasing its potential as a protective layer against wear mechanisms such as oxidation, tribo-film formation, and adhesive wear.
Article
Nanoscience & Nanotechnology
Ziqi Xu, Hui Liu, Jianhang Sun, Weiying Zhou, Ce Han, Guocheng Yang, Yuping Shan
Summary: The conversion of traditional biomass into low-cost HER catalysts offers broad application prospects. This paper demonstrates the excellent HER activity and stability of the synthesized RuV-C catalyst.
Article
Materials Science, Multidisciplinary
Wen Sun, Xin Chu, Jibo Huang, Haiming Lan, Adrian Wei-Yee Tan, Renzhong Huang, Erjia Liu
Summary: In this study, Inconel 718 coatings were deposited using the high-pressure cold spray technique, and post-process solution and double aging treatments were performed. The microstructures of the as-deposited and heat-treated IN718 were examined, and their mechanical properties were evaluated. The results showed that the original micro-dendritic structures in the powder were severely elongated during the cold spray process. After solution heat treatment, the segregations of Nb, Mo, and Ti were dissolved, transforming into MC carbide and a needle-like delta phase. The needle-like delta phase acted as a pinning effect to retard grain growth. Additionally, strengthening phases were formed through aging treatments. The mechanical properties of the cold-sprayed Inconel 718 were improved with proper solution and aging heat treatments.
Article
Materials Science, Multidisciplinary
Adrian Wei-Yee Tan, Nataniel Yong Syn Tham, Yao Shian Chua, Kaiqiang Wu, Wen Sun, Erjia Liu, Sung Chyn Tan, Wei Zhou
Summary: In this study, the nickel-based alloy Inconel 625 was successfully coated onto grey cast iron using cold spray process, and the diffusion effects between the coating and substrate after heat treatment were studied. The results demonstrated that the coatings had dense and defect-free interfaces and showed stable hardness at high temperatures. The potential application of cold spray on nickel-based alloy coatings for restoration and surface enhancement of grey cast iron components was also highlighted.
Proceedings Paper
Engineering, Manufacturing
X. Song, X. Z. Jin, J. Everaerts, W. Y. Tan, W. Sun, I Marinescu, W. Zhai, F. Li, E. J. Liu, A. M. Korsunsky
ADVANCED SURFACE ENHANCEMENT, INCASE 2019
(2020)
