keyword
https://read.qxmd.com/read/38157302/spectroscopy-guided-deep-learning-predicts-solid-liquid-surface-adsorbate-properties-in-unseen-solvents
#21
JOURNAL ARTICLE
Wenjie Du, Fenfen Ma, Baicheng Zhang, Jiahui Zhang, Di Wu, Edward Sharman, Jun Jiang, Yang Wang
Accurately and rapidly acquiring the microscopic properties of a material is crucial for catalysis and electrochemistry. Characterization tools, such as spectroscopy, can be a valuable tool to infer these properties, and when combined with machine learning tools, they can theoretically achieve fast and accurate prediction results. However, on the path to practical applications, training a reliable machine learning model is faced with the challenge of uneven data distribution in a vast array of non-negligible solvent types...
December 29, 2023: Journal of the American Chemical Society
https://read.qxmd.com/read/38141124/analysis-of-scientific-and-technological-trends-in-the-incorporation-of-activated-carbon-in-advanced-oxidation-processes-a-bibliometric-study
#22
REVIEW
Diego Montenegro-Apraez, Fiderman Machuca-Martínez
There is high interest in the development of water pollution remediation technologies. Advanced oxidation processes (AOPs) are a promising alternative for the degradation of organic compounds; however, these technologies have been limited mainly by high operating costs and, in some cases, by forming byproducts, which can be more hazardous than the original pollutants. Activated carbon (AC) is a porous material that can be combined with AOP systems in various ways, given its adsorbent and catalytic characteristics...
December 23, 2023: Environmental Science and Pollution Research International
https://read.qxmd.com/read/38135452/undercoordination-chemistry-of-sulfur-electrocatalyst-in-lithium-sulfur-batteries
#23
REVIEW
Jiayi Wang, Gaoran Li, Xiaomin Zhang, Kai Zong, Yi Yang, Xiaoyu Zhang, Xin Wang, Zhongwei Chen
Undercoordination chemistry is an effective strategy to modulate the geometry-governed electronic structure and thereby regulate the activity of sulfur electrocatalysts. Efficient sulfur electrocatalysis is requisite to overcome the sluggish kinetics in lithium-sulfur (Li-S) batteries aroused by multi-electron transfer and multi-phase conversions. Recent advances unveil the great promise of undercoordination chemistry in facilitating and stabilizing sulfur electrochemistry, yet a related review with systematicness and perspectives is still missing...
December 22, 2023: Advanced Materials
https://read.qxmd.com/read/38126361/3d-grape-string-like-heterostructures-enable-high-efficiency-sodium-ion-capture-in-ti-3-c-2-t-x-mxene-fungi-derived-carbon-nanoribbon-hybrids
#24
JOURNAL ARTICLE
Ningning Liu, Jianhua Yuan, Xiaochen Zhang, Yifan Ren, Fei Yu, Jie Ma
2D transition metal carbides and carbonitrides (MXenes) have emerged as promising electrode materials for electrochemistry ion capture but always suffer from severe layer-restacking and irreversible oxidation that restrains their electrochemical performance. Here we design a dual strategy of microstructure tailoring and heterostructure construction to synthesize a unique 3D grape string-like heterostructure consisting of Ti3 C2 T x MXene hollow microspheres wrapped by fungi-derived N-doping carbon nanoribbons (denoted as GMNC)...
December 21, 2023: Materials Horizons
https://read.qxmd.com/read/38109856/structure-properties-preparation-and-application-of-layered-titanates
#25
REVIEW
Tian Liu, Lei Miao, Fangyi Yao, Wenxiong Zhang, Weixing Zhao, Desuo Yang, Qi Feng, Dengwei Hu
As a typical cation-exchangeable layered compound, layered titanate has a unique open layered structure. Its excellent physical and chemical properties allow its wide use in the energy, environmental protection, electronics, biology, and other fields. This paper reviews the recent progress in the research on the structure, synthesis, properties, and application of layered titanates. Various reactivities, as well as the advantages and disadvantages, of different synthetic methods are discussed. The reaction mechanism and influencing factors of the ion exchange reaction, intercalation reaction, and exfoliation reaction are analyzed...
December 18, 2023: Inorganic Chemistry
https://read.qxmd.com/read/38078695/%C3%AE-bi-2-o-3-bi-2-wo-6-nanocomposite-ornated-with-meso-tetraphenylporphyrin-interfacial-electrochemistry-and-photoresponsive-detection-of-nanomolar-hexavalent-cr
#26
JOURNAL ARTICLE
Sunanda Pal, Vikram Mahamiya, Purbali Ray, Abhimanyu Sarkar, Farhin Sultana, Bibhutosh Adhikary, Brahmananda Chakraborty, Bibhutibhushan Show
Hexavalent chromium exposure via inhalation, ingestion, or both has been proven to adversely affect internal organs, induce toxic effects, cause allergies, and contribute to the development of cancer. It requires a substantial and challenging effort to detect several heavy metal ions conveniently, sensitively, and reliably by using materials that are easy to synthesize and have a high yield. The impact of light on the electrocatalytic oxidation/reduction process proves an environmentally friendly methodology with numerous applications in pollution control...
December 11, 2023: Inorganic Chemistry
https://read.qxmd.com/read/38075800/superfast-synthesis-of-carbon-xerogels
#27
JOURNAL ARTICLE
Abdurrahman Bilican, Priyanka Sharma, Nguyen Khang Tran, Claudia Weidenthaler, Wolfgang Schmidt
Carbon xerogels (CXs) provide unique opportunities for numerous applications in the areas of adsorption, separation, insulation, catalysis, and electrochemistry, but their use is hampered by time- and energy-intensive synthesis protocols. Synthesis protocols may require several days or more. Here, we report the synthesis of CXs requiring only 5 h using hydrothermal gelation and direct carbonization of the wet polymer. Drying of the polymer gel is of utmost importance for the synthesis of closely related carbon aerogels and is generally considered to be essential for the preparation of CXs...
December 5, 2023: ACS Omega
https://read.qxmd.com/read/38054450/passivation-free-liquid-metal-based-electrosynthesis-of-aluminum-metal-organic-frameworks-mediated-by-light-metal-activation
#28
JOURNAL ARTICLE
Jiewei Zheng, Marcello B Solomon, Aditya Rawal, Yuan Chi, Ruohan Yu, Li Liu, Jianbo Tang, Guangzhao Mao, Deanna M D'Alessandro, Priyank V Kumar, Md Arifur Rahim, Kourosh Kalantar-Zadeh
The production of aluminum (Al) metal-organic frameworks (MOFs) by electrosynthesis using solid-state Al electrodes always faces significant challenges due to the formation of a passivating aluminum oxide layer in the process. Here, we developed a liquid-metal-based method to electrosynthesize an aluminum Al-MOF (MIL-53). This method uses a liquid-state gallium (Ga) anode as a reservoir and activator for a light metal, Al, in the form of Al-Ga alloys that releases Al3+ for the electrosynthesis of Al-MOFs. Introducing Ga into the system inhibits the formation of aluminum oxide passivation layer and promotes the electrochemical reaction for Al-MOF synthesis...
December 6, 2023: ACS Nano
https://read.qxmd.com/read/38034121/advances-in-paper-based-electrochemical-immunosensors-review-of-fabrication-strategies-and-biomedical-applications
#29
REVIEW
Jarid du Plooy, Nazeem Jahed, Emmanuel Iwuoha, Keagan Pokpas
Cellulose paper-based sensing devices have shown promise in addressing the accuracy, sensitivity, selectivity, analysis time and cost of current disease diagnostic tools owing to their excellent physical and physiochemical properties, high surface-area-to-volume ratio, strong adsorption capabilities, ease of chemical functionalization for immobilization, biodegradability, biocompatibility and liquid transport by simple capillary action. This review provides a comprehensive overview of recent advancements in the field of electrochemical immunosensing for various diseases, particularly in underdeveloped regions and globally...
November 2023: Royal Society Open Science
https://read.qxmd.com/read/37995502/n-methyl-mesoporphyrin-ix-nmm-as-electrochemical-probe-for-detection-of-guanine-quadruplexes
#30
JOURNAL ARTICLE
Daniel Dobrovodsky, Ales Danhel, Daniel Renciuk, Jean-Louis Mergny, Miroslav Fojta
G-quadruplexes (G4) are stable alternative secondary structures of nucleic acids. With increasing understanding of their roles in biological processes and their application in bio- and nanotechnology, the exploration of novel methods for the analysis of these structures is becoming important. In this work, N-methyl mesoporphyrin IX (NMM) was used as a voltammetric probe for an easy electrochemical detection of G4s. Cyclic voltammetry on a hanging mercury drop electrode (HMDE) was used to detect NMM with a limit of detection (LOD) of 40 nM...
November 17, 2023: Bioelectrochemistry
https://read.qxmd.com/read/37990915/assembly-of-an-iron-based-complex-into-a-metal-organic-framework-a-space-confinement-strategy-for-isolation-of-mono-iron-complexes-to-protect-from-dimerization
#31
JOURNAL ARTICLE
Juan Chen, Lu-Qi Bai, Yi-Fei Dai, Li-Cheng Deng, Yu Wang, Tao Zhang, Kai-Jie Chen
Non-heme mononuclear iron complexes, especially when supported by tripodal tetradentate ligands, show promising C-H bond activation efficiency in catalytic reactions. Nevertheless, they intrinsically decay readily to their dinuclear form, and the dimerization process is inevitable in homogenous solution, which dramatically hinders their further application. Hence, we demonstrate that the mononuclear iron complex [(TPA)FeII -2L]2+ (L = labile ligands, mainly solvent molecules) was successfully encapsulated in a highly robust metal-organic framework UiO-66 via a two-step " ship-in-a-bottle " strategy...
November 22, 2023: Dalton Transactions: An International Journal of Inorganic Chemistry
https://read.qxmd.com/read/37955970/what-is-the-rate-limiting-step-of-oxygen-reduction-reaction-on-fe-n-c-catalysts
#32
JOURNAL ARTICLE
Saerom Yu, Zachary Levell, Zhou Jiang, Xunhua Zhao, Yuanyue Liu
Oxygen reduction reaction (ORR) is essential to various renewable energy technologies. An important catalyst for ORR is single iron atoms embedded in nitrogen-doped graphene (Fe-N-C). However, the rate-limiting step of the ORR on Fe-N-C is unknown, significantly impeding understanding and improvement. Here, we report the activation energies of all of the steps, calculated by ab initio molecular dynamics simulations under constant electrode potential. In contrast to the common belief that a hydrogenation step limits the reaction rate, we find that the rate-limiting step is oxygen molecule replacing adsorbed water on Fe...
November 13, 2023: Journal of the American Chemical Society
https://read.qxmd.com/read/37939305/pseudocapacitance-induced-synaptic-plasticity-of-tribo-phototronic-effect-between-ionic-liquid-and-2d-mos-2
#33
JOURNAL ARTICLE
Ribwar Ahmadi, Amin Abnavi, Amirhossein Hasani, Hamidreza Ghanbari, Mohammad Reza Mohammadzadeh, Mirette Fawzy, Fahmid Kabir, Michael M Adachi
Contact-induced electrification, commonly referred to as triboelectrification, is the subject of extensive investigation at liquid-solid interfaces due to its wide range of applications in electrochemistry, energy harvesting, and sensors. This study examines the triboelectric between an ionic liquid and 2D MoS2 under light illumination. Notably, when a liquid droplet slides across the MoS2 surface, an increase in the generated current and voltage is observed in the forward direction, while a decrease is observed in the reverse direction...
November 8, 2023: Small
https://read.qxmd.com/read/37924805/rapid-detection-of-pseudomonas-syringae-pv-actinidiae-by-electrochemical-surface-enhanced-raman-spectroscopy
#34
JOURNAL ARTICLE
Lingli Jiang, Longhui Luo, Zhuzhu Zhang, Chao Kang, Zhibo Zhao, Dongmei Chen, Youhua Long
Bacterial cancer caused by Pseudomonas syringae pv. actinidiae (Psa) is a major threat to kiwifruit in the world, and there is still a lack of effective control measures. The field of bacterial detection needs a fast, easy-to-use and sensitive identification platform. The current bacterial identification methods are lack of time efficiency, which brings problems to many sectors of society. Surface-enhanced Raman spectroscopy (SERS) and electrochemistry (EC) have been studied as possible candidates for bacterial detection because of their high sensitivity for the detection of biomolecules...
October 24, 2023: Talanta
https://read.qxmd.com/read/37922584/performance-and-mechanism-of-smx-removal-by-an-electrolysis-integrated-ecological-floating-bed-at-low-temperatures-a-new-perspective-of-plant-activity-iron-plaque-and-microbial-functions
#35
JOURNAL ARTICLE
Ying Liu, Maozhen Han, Fengmin Li, Na Zhang, Shaoyong Lu, Xiaohui Liu, Fengchang Wu
Improvements in plant activity and functional microbial communities are important to ensure the stability and efficiency of pollutant removal measures in cold regions. Although electrochemistry is known to accelerate pollutant degradation, cold stress acclimation of plants and the stability and activity of plant-microbial synergism remain poorly understood. The sulfamethoxazole (SMX) removal, iron plaque morphology, plant activity, microbial community, and function responses were investigated in an electrolysis-integrated ecological floating bed (EFB) at 6 ± 2 ℃...
October 21, 2023: Journal of Hazardous Materials
https://read.qxmd.com/read/37885584/subsurface-hydride-formation-leads-to-slow-surface-adsorption-processes-on-a-pd-111-single-crystal-electrode-in-acidic-electrolytes
#36
JOURNAL ARTICLE
Xiaoting Chen, Kasinath Ojha, Marc T M Koper
Palladium is one of the most important catalysts due to its widespread use in heterogeneous catalysis and electrochemistry. However, an understanding of the electrochemical processes and interfacial phenomena at Pd single-crystal electrodes/electrolytes is still scarce. In this work, the electrochemical behavior of the Pd(111) electrode was studied by the combination of cyclic voltammetry (CV) and electrochemical impedance spectroscopy (EIS) in different acidic electrolytes, namely, sulfuric acid, perchlorate acid, methane sulfonic acid, and hydrofluoric acid...
October 23, 2023: JACS Au
https://read.qxmd.com/read/37882357/cation-defect-engineered-boost-fast-kinetics-of-two-dimensional-topological-bi-2-se-3-cathode-for-high-performance-aqueous-zn-ion-batteries
#37
JOURNAL ARTICLE
Yu Zong, Haichao Chen, Jinsong Wang, Menghua Wu, Yu Chen, Liyu Wang, Xinliang Huang, Hongwei He, Xin Ning, Zhongchao Bai, Wen Wen, Daming Zhu, Xiaochuan Ren, Nana Wang, Shixue Dou
The challenge with aqueous zinc-ion batteries (ZIBs) lies in finding suitable cathode materials that can provide high capacity and fast kinetics. Herein, two-dimensional topological Bi2 Se3 with acceptable Bi-vacancies for ZIBs cathode (Cu-Bi2-x Se3 ) is constructed through one-step hydrothermal process accompanied by Cu heteroatom introduction. The cation-deficient Cu-Bi2-x Se3 nanosheets (≈4 nm) bring improved conductivity from large surface topological metal states contribution and enhanced bulk conductivity...
October 26, 2023: Advanced Materials
https://read.qxmd.com/read/37880928/gerhardtite-as-a-precursor-to-an-efficient-co-to-acetate-electroreduction-catalyst
#38
JOURNAL ARTICLE
Zhi-Zheng Wu, Xiao-Long Zhang, Peng-Peng Yang, Zhuang-Zhuang Niu, Fei-Yue Gao, Yu-Cai Zhang, Li-Ping Chi, Shu-Ping Sun, Jing-Wen DuanMu, Pu-Gan Lu, Ye-Cheng Li, Min-Rui Gao
Carbon-carbon coupling electrochemistry on a conventional copper (Cu) catalyst still undergoes low selectivity among many different multicarbon (C2+ ) chemicals, posing a grand challenge to achieve a single C2+ product. Here, we demonstrate a laser irradiation synthesis of a gerhardtite mineral, Cu2 (OH)3 NO3 , as a catalyst precursor to make a Cu catalyst with abundant stacking faults under reducing conditions. Such structural perturbation modulates electronic microenvironments of Cu, leading to improved d-electron back-donation to the antibonding orbital of *CO intermediates and thus strengthening *CO adsorption...
October 25, 2023: Journal of the American Chemical Society
https://read.qxmd.com/read/37878182/treatment-of-phenolic-wastewater-by-anaerobic-fluidized-bed-microbial-fuel-cell-using-carbon-brush-as-anode-microbial-community-analysis-and-m-cresol-degradation-mechanism
#39
JOURNAL ARTICLE
Zhaoxin Zhou, Xinmin Liu, Ranran Chen, Xiude Hu, Qingjie Guo
Anaerobic fluidized bed microbial fuel cell (AFB-MFC) is a technology that combines fluidized bed reactor and microbial fuel cell to treat organic wastewater and generate electricity. The performance and the mechanism of treating m-cresol wastewater in AFB-MFC using carbon brush as biofilm anode were studied. After 48 h of operation, the m-cresol removal efficiency of AFB-MFC, MAR-AFB (fluidized bed bioreactor with acclimated anaerobic sludge), MAR-FB (ordinary fluidized bed reactor with only macroporous adsorptive resin) and AST (traditional anaerobic sludge treatment) were 95...
October 25, 2023: Bioprocess and Biosystems Engineering
https://read.qxmd.com/read/37854691/selective-electrocatalytic-hydrogenation-of-lignocellulose-derived-5-hydroxymethylfurfural-with-superior-productivities
#40
JOURNAL ARTICLE
Dingyi Zhang, Guanwu Lian, Wenbin Zhang, Zhousheng Mo, Henan Chen, Baiyao Liang, Yun Zhang, Wei Zhao
Recently, valorization of biomass to value-added chemicals has drawn increasing attention due to carbon neutrality and sustainability. 5-Hydroxymethylfurfural is an important lignocellulose-derived biomass molecule. Herein, we have demonstrated the efficient electrocatalytic hydrogenation of 5-hydroxymethylfurfural to value-added 2,5-bis(hydroxymethyl)furan. An optimized electrolyzer with a highly electrolyte-permeable Pd cathode well balanced the selectivity, faradaic efficiency, and productivity. We have achieved high selectivity (97%) and faradaic efficiency (72%) at 50 mA cm-2 current density, and a record high productivity of 0...
October 20, 2023: IScience
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