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Rational modulation of electronic structure in PtAuCuNi alloys boosts efficient electrocatalytic ethanol oxidation assisted with energy-saving hydrogen evolution

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Journal of Energy chemistry 2024年第6期93卷 557-567,I0014页

作者： Hu Yao Yinan Zheng Xin Yu Songjie Hu Baolian Su Xiaohui Guo Key Lab of Synthetic and natural Functional Molecule chemistry of Ministry of Education The College of Chemistry and Materials ScienceNorthwest UniversityXi’an 710069ShaanxiChina department of Inorganic chemistry University of NamurBruxellesB-5000 NamurBelgium

Compared to conventional electrocatalytic water splitting,electrocatalytic ethanol oxidation reaction(EOR)along with hydrogen production is considered a more energy-efficient ***,we prepared a type of novel quaternary alloy catalyst(PtAuCuNi@NF)that exhibits excellent activity for EOR(0.215 V at 10 mA cm^(-2))and hydrogen evolution reaction(HER)(7 mV at 10 mA cm^(-2)).Experimental results demonstrated that both Cu and Ni modulated the electronic environment around Pt and *** electron-rich active center facilitates the rapid adsorption and dissociation of reactants and intermediates for both EOR and ***,in the ethanol-assisted overall water splitting(E-OWS),a current density of 10 mA cm^(-2)was achieved at 0.28 ***,an advanced acid-base self-powered system(A-Bsps)that can achieve a self-powered voltage of 0.59 V was ***,the self-driven hydrogen production with zero external power supply was realized by integrating A-Bsps with the E-OWS *** interesting results can provide a feasible strategy for designing and developing advanced nanoalloy-based materials for clean energy integration and use in various fields.

关键词： Pt-based alloy Electronic structure Ethanol oxidation Self-powered system Overall water splitting

Optimizing Household Wastes (Rice, Vegetables, and Fruit) as an Environmentally Friendly Electricity Generator

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Journal of Renewable Materials 2024年第2期12卷 275-284页

作者： Deni Ainur Rokhim Isma Yanti Vitarisma Sumari Sumari Yudhi Utomo Muhammad Roy Asrori department of chemistry Faculty of Mathematics and Natural SciencesUniversitas Negeri MalangMalang65145Indonesia chemistry and PKWU SMAN 3 SidoarjoSidoarjo61215Indonesia

The high consumption of electricity and issues related to fossil energy have triggered an increase in energy prices and the scarcity of fossil ***,many researchers are seeking alternative energy *** potential technology,the Microbial Fuel Cell(MFC)based on rice,vegetable,and fruit wastes,can convert chemical energy into electrical *** study aims to determine the potency of rice,vegetable,and fruit waste assisted by Cu/Mg electrodes as a generator of *** method used was a laboratory experiment,including the following steps:electrode preparation,waste sample preparation,incubation of the waste samples,construction of a reactor using rice,vegetable,and fruit waste as a source of electricity,and *** tests included measuring electrical conductivity,electric current,voltage,current density,and power *** on the test results,the maximum current and voltage values for the fruit waste samples were 5.53 V and 11.5 mA,respectively,with a current density of 2.300 mA/cm^(2) and a power density of 12.719 mW/cm^(2).The results indicate the potential for a future *** next step in development involves determining the optimum conditions for utilizing of rice,vegetable,and fruit *** results of the electrical conductivity test on rice,vegetable,and fruit waste samples were 1.51,2.88,and 3.98 mS,respectively,with the highest electrical conductivity value found in the fruit waste sample.

关键词： Electrical energy fruit waste rice waste vegetable waste

A Golden Touch in the Design of Multifunctional Porphyrin Metallacages:Host-Guest chemistry for Drug-Target Interactions

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CCS chemistry 2024年第7期6卷 1662-1671页

作者： Tamara Rodríguez-Prieto Darren Wragg Nicole Heiduk Mihyun Park Nicole Strittmatter Roland A.Fischer Angela Casini Guillermo Moreno-Alcántar Chair of Medicinal and Bioinorganic chemistry Department of ChemistrySchool of Natural SciencesTechnical University of Munich85748 Garching b.München Professorship for Analytical chemistry Department of ChemistrySchool of Natural SciencesTechnical University of Munich85748 Garching b.München Chair of Inorganic and MetalOrganic chemistry Department of ChemistrySchool of Natural SciencesTechnical University of Munich85748 Garching b.München Munich Data Science Institute(MDSI) Technical University of Munich85748 Garching b.München

The use of three-dimensional self-assembled metallacages(MCgs)as multimodal drug platforms holds great ***,the synthesis of MCgs with increased complexity and functionality is a great challenge since understanding of the interaction of MCgs with biological targets is still *** this context,this work reports on the integration of a gold(III)porphyrin scaffold into a prismatic MCg structure and explores its application for multimodal therapy of cancer in vitro,namely enabling both photodynamic therapy and *** experimental approaches with a state-of-the-art metadynamics theoretical study,we discovered that the gold cage shows unprecedented host-guest interaction-driven selective stabilization of guanine-quadruplex(G4)structures-validated anticancer drug targets-disclosing a new mechanism to pursue in the design of supramolecular drugs.

关键词： gold metallacages porphyrins G4stabili-zation host-guestchemistry anticanceragents

A new tetracyclic triterpenoid from endophytic fungus Fusarium sporotrichioides

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Chinese Herbal Medicines 2024年第2期16卷 231-234页

作者： Yajing Wang Chunyue Liu Yihui Yang Chang Li Yuehu Pei department of Medicinal chemistry and natural Medicine chemistry College of PharmacyHarbin Medical UniversityHarbin 150081China

Objective: To isolate bioactive compounds from the endophytic fungus Fusarium sporotrichioides isolated from Rauwolfia yunnanensis, and investigate their pharmacological ***: The chemical constituents were isolated and purified by combining with ODS column chromatography, silica gel column chromatography and by performing semipreparative HPLC. Their structures were established on the basis of 1D NMR(1H-NMR and13C-NMR) and 2D NMR(1H–1H COSY,HSQC, HMBC and NOESY), as well as HRESIMS and comparison with literature data. In addition, the absolute configuration of compound 1 was determined by calculated ECD ***: One previously undescribed tetracyclic triterpenoid derivative, named as integracide L(1), 12aacetoxy-4,4-dimethyl-24-methylene-5a-cholesta-8,14-diene-2a,3β,11β-triol(2), 12a-acetoxy-4,4-dime thyl-24-methylene-5a-cholesta-8-momoene-2a,3β,11β-triol(3), 12a-acetoxy-4,4-dimethyl-24-methy lene-5a-cholesta-8,14-diene-3β,11β-triol(4), and 12a-acetoxy-4,4-dimethyl-24-methylene-5acholesta-8-momoene-3β,11β-triol(5) were isolated from F. sporotrichioide. Moreover, compound 1 was rare tetracyclic triterpenoid with single methyl replacement at C-4 ***: compound 1 was a new tetracyclic triterpenoid isolated from the endophytic fungus ***. In addition, compound 2 could inhibit the growth of three different human cancer cells significantly. compounds 3 and 5 were found to possess better cytotoxic activities on Hep G-2 cells than the other compounds, with IC50values of(2.8 ± 0.1) and(6.3 ± 0.3) μmol/L respectively.

关键词： antitumor Fusarium sporotrichioides integracide L tetracyclic triterpenoid 12a-acetoxy-4,4-dimethyl-24-methylene5a-cholesta-814-diene-2a,3b,11b-triol 12a-acetoxy-4,4-dimethyl-24-methylene5a-cholesta-8-momoene-2a,3b,11b-triol 12a-acetoxy-4,4-dimethyl-24-methylene5a-cholesta-8-momoene-3b,11b-triol

Exploring deep learning for landslide mapping:A comprehensive review

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China Geology 2024年第2期7卷 330-350页

作者： Zhi-qiang Yang Wen-wen Qi Chong Xu Xiao-yi Shao College of Surveying and Geo-Informatics Tongji UniversityShanghai 200092China National Institute of natural Hazards Ministry of Emergency ManagementBeijing 100085China Key Laboratory of compound and Chained natural Hazards Dynamics Ministry of Emergency Management of ChinaBeijing 100085China

A detailed and accurate inventory map of landslides is crucial for quantitative hazard assessment and land *** methods relying on change detection and object-oriented approaches have been criticized for their dependence on expert knowledge and subjective *** advancements in highresolution satellite imagery,coupled with the rapid development of artificial intelligence,particularly datadriven deep learning algorithms(DL)such as convolutional neural networks(CNN),have provided rich feature indicators for landslide mapping,overcoming previous *** this review paper,77representative DL-based landslide detection methods applied in various environments over the past seven years were *** study analyzed the structures of different DL networks,discussed five main application scenarios,and assessed both the advancements and limitations of DL in geological hazard *** results indicated that the increasing number of articles per year reflects growing interest in landslide mapping by artificial intelligence,with U-Net-based structures gaining prominence due to their flexibility in feature extraction and ***,we explored the hindrances of DL in landslide hazard research based on the above research *** such as black-box operations and sample dependence persist,warranting further theoretical research and future application of DL in landslide detection.

关键词： Landslide Mapping Quantitative hazard assessment Deep learning Artificial intelligence Neural network Big data Geological hazard survery engineering

Spirooxindoles:Recent report of green synthesis approach

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Green Synthesis and Catalysis 2024年第1期5卷 1-13页

作者： Agus Rimus Liandi Antonius Herry Cahyana Diva Naufal Alfariza Rahma Nuraini Renita Wulan Sari Tio Putra Wendari department of chemistry Faculty of Science and TechnologyUniversitas Islam Negeri Syarif Hidayatullah JakartaTangerang Selatan 15412Indonesia department of chemistry Faculty of Mathematics and Natural SciencesUniversitas IndonesiaDepok 16424Indonesia department of chemistry Faculty of Mathematics and Natural SciencesUniversitas AndalasPadang 25163Indonesia

Spirooxindole is a compound with a unique framework and broad bioactivities in *** this study,we have reviewed various approaches or methods in synthesizing spirooxindole derivatives focused on green *** of spirooxindoles is mainly carried out through multicomponent reactions combined with various green approaches such as the use of heterogeneous catalysts(nano-sized,magnetic,metal-complex,and metal-organic framework catalysts),deep eutectic solvent,solvent-free reactions,catalyst-free reactions,as well as the use of ultrasonic and microwaves *** green method is carried out in addition to obtaining high yields,it also offers reductions in the use of hazardous chemicals,energy use,purification processes,and waste *** a result,green synthesis methods in the synthesis of spirooxindole derivatives are more environmentally friendly.

关键词： Spirooxindoles Green synthesis Catalysis Nanoparticle Ultrasonic irradiation

Tracing suspended and bed sediments during high and low water periods using geochemical characteristics-Case study:Vazrood watershed,northern Iran

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Journal of Mountain Science 2024年第2期21卷 470-483页

作者： KARIMI Nabiyeh GHOLAMI Leila KAVIAN Ataollah KHALEDI DARVISHAN Abdulvahed department of Watershed Management Faculty of Natural ResourcesSari Agricultural Sciences and Natural Resources UniversitySari ***Iran department of Watershed Management Engineering Faculty of Natural ResourcesTarbiat Modares UniversityNoor ***Iran

Complete and comprehensive information about sediment dynamic and identification of hotspots of sediment production and transport are necessary for understanding the erosion processes and increasing the efficiency of soil and water conservation *** studies used the sediment fingerprint techniques to investigate the contribution of different sources in suspended and bed sediment yield of the ***,the contribution of various land use/land covers in suspended and bed sediment yield for the great Caspian Sea basin is in an aura of ambiguity and the present study was conducted to gather information about an important part of this area in northern Iran,where rangelands are located upstream of Hyrcanian forests and dense agricultural lands are located *** surface soil of different land use/land covers including forest,rangeland,agriculture and streambank lands were sampled in 30 *** and bed sediments were sampled in the watershed outlet in two high and low water *** characteristics of soil and sediment samples containing 59 elements were measured using ICP-OES GBC *** reliable and suitable tracers from 59 elements were then selected using Range test,Kruskal-Wallis and Discriminant Function Analysis,respectively,in FingerPro package of R *** results showed that for suspended sediment,streambank and rangeland had the highest contributions of 86.2%and 47.5%,respectively,in two high and low water *** bed sediment,in two high and low water periods,rangeland and streambank had the highest contributions of 73.8%and 84.4%,*** use change and especially human activities such as agriculture,road construction and development of residential areas along the main river riparian zone has led to a significant increase in suspended and bed sediments.

关键词： Caspian Sea basin FingerPro Geochemistry Sediment transport Tracer combination

Preliminary geological interpretation of long-wavelength magnetic anomalies over China and surrounding regions

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Earth and Planetary Physics 2024年第3期8卷 445-458页

作者： Jie Wang YanYan Yang ZhiMa Zeren Jian Wang Xin Wang YuXin Luo XuHui Shen National Institute of natural Hazards Ministry of Emergency Management of ChinaBeijing 100085China Key Laboratory of compound and Chained natural Hazards Dynamics Ministry of Emergency Management of ChinaBeijing 100085China School of Emergency Management Science and Engineering University of Chinese Academy of SciencesBeijing 100049China National Space Science Center Chinese Academy of SciencesBeijing 100190China

Long-wavelength(>500 km)magnetic anomalies originating in the lithosphere were first found in satellite magnetic *** to the striking magnetic anomalies around the world,the long-wavelength magnetic anomalies in China and surrounding regions are relatively *** research on each of these anomalies has been quite inadequate;their geological origins remain unclear,in particular their connection to tectonic activity in the Chinese and surrounding *** focus on six magnetic high anomalies over the(1)Tarim Basin,(2)Sichuan Basin(3)Great Xing’an Range,(4)Barmer Basin,(5)Central Myanmar Basin,and(6)Sunda and Banda Arcs,and a striking magnetic low anomaly along the southern part of the Himalayan-Tibetan *** have analyzed their geological origins by reviewing related research and by detailed comparison with geological *** tectonic backgrounds for these anomalies belong to two cases:either ancient basin basement,or subduction-collision ***,the geological origins of large-scale regional magnetic anomalies are always subject to dispute,mainly because of limited surface exposure of sources,later tectonic destruction,and superposition of multi-phase events.

关键词： long-wavelength magnetic anomaly lithospheric magnetic anomaly lithospheric magnetic field model satellite magnetic survey CSES

Facile in situ synthesis and characterization of Fe@Si/zeolite Na composites with magnetic core–shell structures from natural materials for enhanced curcumin loading capacity

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Nanotechnology and Precision Engineering 2024年第2期7卷 69-86页

作者： Munasir Nasir Nuhaa Faaizatunnisa Muhammad Naufal Ariesta Lydia Rohmawati Rifqi Aulia Nurazizah department of Physics Faculty of Mathematics and Natural ScienceUniversitas Negeri Surabaya(Unesa)Surabaya60231Indonesia department of chemistry Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh Nopember(ITS)Surabaya 60111Indonesia department of chemistry Faculty of Mathematics and Natural SciencesUniversitas Sebelas Maret(UNS)Surakarta57126Indonesia department of Medicine Faculty of Medical and Health ScienceUniversitas Islam Negeri(UIN)Maulana Malik IbrahimMalang65151Indonesia

Curcumin is a natural polyphenol that is used in various traditional ***,its inherent properties,such as its rapid degradation and metabolism,low bioavailability,and short half-life,are serious problems that must be *** this end,a drug carrier incorporating natural magnetic cores in a zeolite framework was developed and applied to the loading of curcumin in ethanol *** this system,curcumin is encapsulated in a zeolite Na(ZNA)magnetic core–shell structure(Fe@Si/ZNA),which can be easily synthesized using an in situ *** of Fe_(3)O_(4) nanoparticles was carried out from natural materials using a co-precipitation *** of the prepared magnetic core–shell structures and composites was carried out using vibrating-sample magnetometery,Fourier transform infrared spectroscopy,transmission electron microscopy,and x-ray *** cumulative loading of curcumin in the ZNA composite with 9%nanoparticles was found to reach 90.70%with a relatively long half-life of 32.49 *** tests of curcumin loading in the composite showed that adding magnetic particles to the zeolite framework also increased the stability of the composite *** kinetics and isotherm studies also found that the system follows the pseudo-second-order and Langmuir isotherm models.

关键词： Zeolite Na Magnetic core–shell nanoparticles(MNPs) ZNA Adsorption Curcumin