Article
Chemistry, Multidisciplinary
Xu Li, Na Li, Le Yang, Hao-Sen Chen, Wei-Li Song
Summary: The relationship between interface structure and electrode reactivity in electrochemistry is crucial. Electrochemical methods on the single-particle scale have advantages in establishing the structure-property relationship. Recent achievements in electrochemical energy storage and electrocatalysis have enabled the understanding of electrode evolution and kinetics through single-particle measurements. This concept provides an overview of the progress in single-particle measurements in related electrochemical processes, as well as discusses the challenges and prospects for their development and application.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Electrochemistry
Victoria Kompanijec, John R. Swierk
Summary: This study evaluated the use of five materials as electrochemical catalysts for the oxidation of DBT, with gold showing the highest selectivity for DBTO formation in the presence of water. The overall reaction activity improved with the presence of water, indicating the importance of water in the oxidation process.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Multidisciplinary
Yu Wang, Yuliang Yuan, Hongwen Huang
Summary: This review focuses on the synthesis and applications of Pt-based ultrathin nanowires in various electrocatalytic reactions. The unique structural advantages of these catalysts, such as high Pt atom utilization and strong interaction with supports, contribute to their remarkable catalytic performance. Challenges in synthesis and applications are highlighted, with perspectives proposed for further development in related research areas.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Xianling Wu, Dumei Wang, Xueming Kang, Dongtang Zhang, Yong Yan, Guangsheng Guo, Zaicheng Sun, Xiayan Wang
Summary: The development of methanol-tolerant catalysts is essential for commercializing fuel cells. In this study, we reported a facile synthesis of graphene-supported Pt/Bi catalysts with high oxygen reduction activity and methanol poisoning tolerance. The catalyst showed great potential in the application of direct methanol fuel cells.
Article
Chemistry, Physical
Bo Song, Zhaoyang Wang, Junfeng Li, Yanan Ma
Summary: A particle electrode was synthesized from kaolin and steel slag, with optimized preparation conditions resulting in significantly improved electrocatalytic activity for degrading methylene blue in a 3D electrochemical oxidation reactor compared to a 2D reactor. The kaolin/steel slag particle electrode also exhibited good cycle performance.
CATALYSIS COMMUNICATIONS
(2021)
Review
Chemistry, Multidisciplinary
Subramanian Sowmya, Vijendran Vijaikanth
Summary: Development of clean and renewable energy sources, particularly hydrogen gas, has gained significant attention as an alternative to fossil fuels. This review focuses on the recent advances in electrochemistry and various approaches used to attach cobaloxime complexes to electrode surfaces and analyze their electrocatalytic behavior.
Article
Energy & Fuels
Ruijie Gao, Jian Wang, Zhen-Feng Huang, Rongrong Zhang, Wei Wang, Lun Pan, Junfeng Zhang, Weikang Zhu, Xiangwen Zhang, Chengxiang Shi, Jongwoo Lim, Ji-Jun Zou
Summary: The study focuses on loading platinum onto α-Fe2O3 to create a highly active and stable catalyst with dispersed Pt-Fe pair sites, which exhibits excellent catalytic performance and cycling stability in alkaline conditions.
Article
Chemistry, Multidisciplinary
Aikaterini Touni, Xin Liu, Xiaolan Kang, Patricia A. Carvalho, Spyros Diplas, Kevin G. Both, Sotirios Sotiropoulos, Athanasios Chatzitakis
Summary: A galvanic deposition method has been developed for in-situ formation of Pt nanoparticles on high-aspect-ratio black TiO2-nanotube electrodes, showing comparable results to bulk Pt and commercial catalysts in hydrogen evolution reaction studies. The study provides important insights for the in-situ formation and deposition of nanoparticles in high-aspect-ratio structures for energy applications.
Article
Chemistry, Multidisciplinary
P. Prabhu, Viet-Hung Do, Chun Kuo Peng, Huimin Hu, San-Yuan Chen, Jin-Ho Choi, Yan-Gu Lin, Jong-Min Lee
Summary: Here, we report a high-performance electrocatalyst, atomically thin rhodium metallene incorporated with oxygen-bridged single atomic tungsten (Rh-O-W), for pH-universal hydrogen evolution reaction. The Rh-O-W metallene exhibits remarkable electrocatalytic HER performance in pH-universal electrolytes, with low overpotentials, high mass activities, excellent turnover frequencies, and stability, outperforming benchmark catalysts such as Pt/C, Rh/C, and other precious-metal HER catalysts. The promoting effect of -O-W single atomic sites is understood through characterization and calculations, which show fine-tuning of density of states and electron localization at Rh active sites, leading to near-optimal hydrogen adsorption for HER.
Article
Chemistry, Physical
Xia Qiu, Haifeng Wei, Renjia Li, Yongxin Li
Summary: Bimetallic Au@Pt/Au NPs with triple-layered core-shell structure were successfully prepared and characterized. The single Au@Pt/Au NPs exhibited size-dependent properties for vol-tametric response and electron-transfer rate, and showed excellent electrocatalytic activity, long-term tolerance, and anti-toxicity compared with traditional Pt catalyst. This work provides new insight into conventional electrocatalysis and offers a platform for designing entirely new catalysts at single NPs level.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
G. Sankar, P. Anbarasu, R. Mahendran, K. Rajendran, T. Sivakumar
Summary: This paper systematically researched a new type of solar cell counterelectrode material CoNi2S4/rGO, which exhibits excellent photo-conversion efficiency and electrocatalytic performance, outperforming traditional counter electrode materials Pt and pristine CoNi2S4.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Review
Chemistry, Physical
Mohammad Hasibul Hasan, Ian T. McCrum
Summary: This article discusses the quantitative understanding of the effects of near-surface solvent on predictive catalyst and electrode design through the direct comparison between ab initio computational modeling and experimental measurements. It also provides a benchmark for different approximations and suggests improved modeling methodologies.
CURRENT OPINION IN ELECTROCHEMISTRY
(2022)
Article
Chemistry, Physical
Paolo Cignoni, Niclas Blanc, Kristina Tschulik
Summary: The advancement of electrocatalysis from fundamental research to application requires seamless collaboration between researchers from different fields. This mini review highlights the common problems faced when evaluating the performance of complex electrode assemblies made of nanostructured materials. Applying classical kinetic descriptors to these assemblies often makes it challenging to distinguish and attribute material properties to electrode performance. Recent advancements in discerning and analyzing electrocatalysis on composite or nanostructured electrodes are discussed, with emphasis on detecting and addressing inhomogeneities in the electrocatalytic activity of three-dimensional electrodes.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Electrochemistry
Isaac Kretzmer, Eric M. Stuve
Summary: In this study, the electrocatalytic properties of nickel-chromium-molybdenum (NiCrMo) alloys in alkaline electrolyte were found to be influenced by the Cr:Mo ratio. Alloys with dissimilar ratios exhibited higher electrochemical surface area and increased γ-NiOOH formation, while alloys with equal Cr:Mo concentration and pure nickel developed primarily β-NiOOH surfaces and showed higher turnover frequencies (TOF). This suggests that a β-NiOOH-developed surface is more OER-active than a γ-NiOOH-developed surface, pointing to the potential of certain NiCrMo alloys as OER electrocatalysts.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Shuiping Luo, Long Zhang, Yujia Liao, Lanxi Li, Qi Yang, Xiaotong Wu, Xiaoyu Wu, Dongsheng He, Chunyong He, Wen Chen, Qilong Wu, Mingrui Li, Emiel J. M. Hensen, Zewei Quan
Summary: The study presents a method for preparing isolated Rh atoms and tensile-strained Pt-Rh single-atom alloy through atomic galvanic replacement and electrochemical dealloying, demonstrating high electrocatalytic performance in alkaline electrolytes with activity, selectivity, stability, and anti-poisoning ability.
ADVANCED MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Ying Gao, Qingqing Wu, Guangchi Zhang, Wen Chen, Derrick Wing Kwan Ng, Marco Di Renzo
Summary: This paper investigates an active intelligent reflecting surface (IRS)-aided simultaneous wireless information and power transfer (SWIPT) system, which employs an active IRS to assist a multi-antenna access point (AP) in transmitting both information and energy to multiple single-antenna information users (IUs) and energy users (EUs). Two optimization problems are studied to maximize the harvested power at the EUs and the sum-rate of the IUs, respectively. The paper proposes computationally efficient algorithms based on alternating optimization, semidefinite relaxation (SDR), and successive convex approximation (SCA) to obtain suboptimal solutions for the problems.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Fushao Li, Yingxian Xu, Qingqing Wu, Deqiang Zhao, Mingsen Deng
Summary: The fibrous La1.2Sr0.8CoO4 +/- 6 cathode material is prepared using soluble salts as metal-ion sources and polyacrylonitrile (PAN) as a polymer matrix via electrostatic spinning. The microstructural characteristic of this material is investigated, and its electrochemical performance in solid-oxide fuel cells is tested. The results demonstrate that the fibrous cathode exhibits superior electrochemical performance compared to the conventional plain cathode.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Multidisciplinary
Xia Qiu, Mengya Cao, Yongxin Li
Summary: In this work, metal-organic frameworks (MOFs) were used to construct UiO-66 and its derivatives on solid-state nanopores, achieving ultra-selective proton transport. The aminated MOFs modification (UiO-66-(NH2)(2)) significantly improved proton selectivity, while the further post-modification with sulfo-acetic acid (UiO-66-(NH-SAG)(2)) resulted in ultra-high selectivity to protons. This work provides a new way to achieve sub-nanochannels with high selectivity for various applications.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Engineering, Electrical & Electronic
Yuan Guo, Yang Liu, Qingqing Wu, Qingjiang Shi, Yang Zhao
Summary: This study proposes a novel double-faced active (DFA)-RIS structure to overcome the defects of double-fading loss and confined-to-half-space coverage. The DFA-RIS is used to enhance secrecy performance by jointly designing access point (AP)'s beamforming and DFA-RIS configuration to maximize sum secrecy rate (SR). The optimization problem is solved using majorization-minimization (MM) and penalty dual decomposition (PDD) methods. Numerical results verify the convergence and effectiveness of the proposed algorithm and demonstrate the superiority of the DFA-RIS architecture in enhancing communication security.
IEEE TRANSACTIONS ON COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Chi Qiu, Qingqing Wu, Meng Hua, Xinrong Guan, Yuan Wu
Summary: Intelligent reflecting surface (IRS) is a promising technology to enhance wireless energy transfer (WET) systems. However, for multiuser WET systems, simultaneous multi-beam energy transmission is needed to achieve maximum performance, which cannot be achieved by a single set of coefficients. This study proposes a time-division based framework to exploit the dynamic passive beamforming capability of IRS and achieve a good balance between system performance and complexity. Simulation results demonstrate the necessity of multi-beam transmission and the superiority of the proposed dynamic IRS beamforming scheme over existing schemes.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Yanan Ma, Ming Li, Yang Liu, Qingqing Wu, Qian Liu
Summary: This study investigates the energy efficiency in an active RIS-assisted MU-MISO communication system and proposes a joint transmit beamforming and energy-included RIS reflection matrix design algorithm to maximize energy efficiency. Simulation results demonstrate the effectiveness of the proposed active RIS scheme against baseline schemes, suggesting that deploying active RIS for wireless systems is a promising approach towards green communications.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Guangji Chen, Qingqing Wu, Wen Chen
Summary: In this article, a new dynamic intelligent reflecting surface (IRS) beamforming framework is developed for an energy-constrained Internet-of-Things system. Multiple IRS beamforming patterns are optimized based on statistical channel state information (CSI), and power and time allocation for devices in each channel coherence interval are optimized based on instantaneous CSI. The simulation results demonstrate the effectiveness of the proposed design, with only 33% of the total IRS beamforming patterns needed to maintain 95% of the maximum achieved ergodic sum-rate.
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY
(2023)
Article
Engineering, Electrical & Electronic
Zhen Chen, Jie Tang, Xiu Yin Zhang, Qingqing Wu, Gaojie Chen, Kai-Kit Wong
Summary: This paper investigates the robust beamforming design problem for a RIS-assisted multiuser millimeter wave system with imperfect CSI. By dividing the original problem into a series of subproblems and introducing a multiobjective evolutionary algorithm for optimization, the proposed scheme can mitigate the impact of imperfect CSI. Simulation results demonstrate that the proposed scheme can potentially enhance the performance of existing wireless communication, considering a desirable trade-off among beamforming gain, user priority, and error factor.
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
(2023)
Article
Chemistry, Analytical
Xia Qiu, Qingshan Dai, Haoran Tang, Yongxin Li
Summary: This research developed a method to simultaneously detect miRNA-21 and Let-7a in a single experiment by utilizing the distinguishability of two types of current signals. The immobilization of ssDNA1 complementary to miRNA-21 on Pt nanoparticles and ssDNA2 complementary to Let-7a on Ag nanoparticles inhibited the respective current transients. The addition of miRNA-21 and Let-7a disrupted the weak DNA-nanoparticle interaction and restored the catalytic activities, enabling the quantification of the target miRNAs based on the frequency of the recovered current signals.
ANALYTICAL CHEMISTRY
(2023)
Article
Biophysics
Xia Qiu, Jingyi Dong, Qingshan Dai, Mimi Huang, Yongxin Li
Summary: An ultrasensitive and label-free method for detecting miRNA-21 was developed by combining nanopore ionic current rectification (ICR) technology with HCR technology. The detection strategy showed linear correlation between ICR ratio and logarithm of miRNA-21 concentration within a certain range, holding great promise in the field of cancer diagnosis.
BIOSENSORS & BIOELECTRONICS
(2023)
Article
Environmental Sciences
Yongqing Sun, Man Zhang, Wenjing Wu, Ruixia Liu, Yue Zhang, Shaofei Su, Enjie Zhang, Lijuan Sun, Wentao Yue, Qingqing Wu, Gongbo Chen, Wangjian Zhang, Chenghong Yin
Summary: A nationwide study in China found that exposure to PM1 during the first trimester is associated with blood pressure and hypertensive disorders of pregnancy (HDP) among pregnant women. Furthermore, cold exposure amplifies the associations between PM1 and blood pressure/HDP in the first trimester, with pregnant women who have a higher education level or live in urban areas being more vulnerable.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Materials Science, Multidisciplinary
Bingzhen Li, Yan Li, Fangyuan Li, Yuhua Chen, Yaxing Wei, Jijun Wang, Qingqing Wu
Summary: In this paper, a ultra-thin, single-layer and compact metasurface (MS) based on a meander structure is proposed and investigated for achieving linear-polarization to linear-polarization (LP-to-LP) and linear-polarization to circular-polarization (LP-to-CP) conversion in the microwave region. Both simulation and experimental results show that the designed MS can effectively convert the polarization of incident waves.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Public, Environmental & Occupational Health
Yu Huang, Qingqing Wu, Shuiyang Xu, Xiang Zhao, Lei Wang, Qiaohong Lv, Suxian Wu, Xuehai Zhang
Summary: This study aimed to investigate the COVID-19 vaccine uptake and its determinants among teenagers and their parents in Zhejiang, China. The results showed that 96.11% of the participants and 99.00% of their children had been vaccinated against COVID-19. Children whose parents had not been vaccinated were more likely to be unvaccinated. The main reasons for vaccine refusal were medical conditions, safety concerns, and lack of information about vaccination locations.
ASIAN PACIFIC JOURNAL OF TROPICAL MEDICINE
(2023)
Article
Energy & Fuels
Yanan Zhu, Qingqing Wu, Lei Zeng, Qunfang Liang, Xuetang Xu, Fan Wang
Summary: In this study, nickel foam with a 3D open-pore structure is used as a substrate to enhance the performance of a supercapacitor electrode. Nickel-cobalt layered double hydroxide nanowire arrays are grown on the etched nickel foam substrate, resulting in a high-performance electrode with low resistance and high stability.
Article
Pharmacology & Pharmacy
Hui-Fen Zang, Qing-Qing Wu, Lei Shi, Qiu-Li Yu
Summary: A novel La(III)-containing coordination polymer, [La(BDC)1.5(IP)(H2O)]center dot nH2O (1), was synthesized by reacting La(NO3)3 center dot 6H2O with 1,4-benzenedicarboxylate (BDC) using N-donor co-ligand 1H-imidazo[4,5-f][1,10]-phenanthroline (IP). The therapeutic effect and mechanism of this compound on gestational diabetes mellitus were evaluated by determining the insulin receptor expression level with real time RT-PCR and measuring the levels of C-reactive protein and interleukin 6 (IL-6) with ELISA assay.
LATIN AMERICAN JOURNAL OF PHARMACY
(2023)
