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Facile synthesis of Cu-doped manganese oxide octahedral molecular sieve for the efficient degradation of sulfamethoxazole via peroxymonosulfate activation

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International Journal of Minerals,Metallurgy and Materials 2024年第12期31卷 2770-2780页

作者： Yuhua Qiu Yingping huang Yanlan Wang Xiang Liu di huang Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationCollege of Materials and Chemical EngineeringChina Three Gorges UniversityYichang 443002China Department of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252059China

Advanced processes for peroxymonosulfate(PMS)-based oxidation are efficient in eliminating toxic and refractory organic pol-lutants from *** activation of electron-withdrawing HSO_(5)^(-)releases reactive species,including sulfate radical(·SO_(4)^(-)),hydroxyl radical(·OH),superoxide radical(·O_(2)^(-)),and singlet oxygen(1O_(2)),which can induce the degradation of organic *** this work,we synthesized a variety of M-OMS-2 nanorods(M=Co,Ni,Cu,Fe)by doping Co^(2+),Ni^(2+),Cu^(2+),or Fe^(3+)into manganese oxide oc-tahedral molecular sieve(OMS-2)to efficiently remove sulfamethoxazole(SMX)via PMS *** catalytic performance of M-OMS-2 in SMX elimination via PMS activation was *** nanorods obtained in decreasing order of SMX removal rate were Cu-OMS-2(96.40%),Co-OMS-2(88.00%),Ni-OMS-2(87.20%),Fe-OMS-2(35.00%),and OMS-2(33.50%).Then,the kinetics and struc-ture-activity relationship of the M-OMS-2 nanorods during the elimination of SMX were *** feasible mechanism underly-ing SMX degradation by the Cu-OMS-2/PMS system was further investigated with a quenching experiment,high-resolution mass spec-troscopy,and electron paramagnetic *** showed that SMX degradation efficiency was enhanced in seawater and tap water,demonstrating the potential application of Cu-OMS-2/PMS system in sewage treatment.

关键词： sulfamethoxazole manganese oxide octahedral molecular sieve peroxymonosulfate sewage treatment copper

Percarbonate activation catalyzed by nanoblocks of basic copper molybdate for antibiotics degradation: High performance, degradation pathways and mechanism

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Chinese Chemical Letters 2024年第10期35卷 375-378页

作者： Xiaotao Jin Yanlan Wang Yingping huang di huang Xiang Liu Engineering Research Center of Eco-Environment in Three Gorges Reservoir Region of Ministry of Education College of Materials and Chemical EngineeringChina Three Gorges UniversityYichang 443002China Department of chemistry and chemical engineering Liaocheng UniversityLiaocheng 252059China

Sodium percarbonate(Na_(2)CO_(3)·1.5H_(2)O_(2),SPC)has been extensively employed as a solid substitute of H_(2)O_(2)for Fenton process in water treatment,because of its high stability during the production,transport,storage and *** addition,SPC can be applied in a wider range of work pH,it is also applied as a buffer in Fenton reaction for preventing a drop in ***,we have synthesized basic copper molybdate(BCM)nanoblocks with the molecular formula of Cu_(3)(MoO_(4))_(2)(OH)_(2)as an efficient and heterogeneous catalyst for antibiotics degradation via percarbonate ***,fully physical characterizations confirmed BCM nanocomposite exhibited a structure of *** also found that BCM/SPC system could work in a much wider pH range,compared with H_(2)O_(2).Then,BCM/SPC system presented a good anti-interference ability for natural organic matter in OTC *** results and Quenching tests confirmed that the co-presence of·CO_(3)-,·O_(2)-,1O_(2)and·OH in BCM/SPC system.

关键词： Sodium percarbonate Fenton process Water treatment Copper molybdate Nanoblocks

Tuning heat transport via coherent structure manipulation:recent advances in thermal turbulence

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National Science Review 2023年第6期10卷 245-257页

作者： Ke-Qing Xia Shi-di huang Yi-Chao Xie Lu Zhang Center for Complex Flows and Soft Matter Research and Department of Mechanics and Aerospace Engineering Southern University of Science and Technology State Key Laboratory for Strength and Vibration of Mechanical Structures and School of Aerospace Xi'an Jiaotong University

Tuning transport properties through the manipulation of elementary structures has achieved great success in many areas,such as condensed matter ***,the ability to manipulate coherent structures in turbulent flows is much less *** article reviews a recently discovered mechanism of tuning turbulent heat transport via coherent structure *** first show how this me chanism can be realized by applying simple geometrical confinement to a classical thermally driven turbulence, which leads to the condensation of elementary coherent structures and significant heat-transport enhancement,despite the resultant slower *** potential applications of this new paradigm in passive heat management are also *** then explain how the heat transport behaviors in seemingly different turbulence systems can be understood by this unified framework of coherent structure *** future directions in this research area are also outlined.

关键词： coherent structure turbulent flow heat transport geometrical confinement dynamical constraint

Fluorine-doped BiVO_(4) photocatalyst: Preferential cleavage of C−N bond for green degradation of glyphosate

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Journal of Environmental Sciences 2023年第5期127卷 60-68页

作者： Yunlong Chen Yingping huang Hailin Tian Liqun Ye Ruiping Li Chuncheng Chen Zhongxu Dai di huang College of Materials and Chemical Engineering China Three Gorges UniversityYichang 443002China Engineering Research Center of Eco-environment in Three Gorges Reservoir Region Ministry of EducationChina Three Gorges UniversityYichang 443002China College of Biology&Pharmacy China Three Gorges UniversityYichang 443002China Beijing National Laboratory for Molecular Sciences Key Laboratory of PhotochemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

With increasing concerns on the environment and human health,the degradation of glyphosate through the formation of less toxic intermediates is of great *** the developed methods for the degradation of glyphosate,photodegradation is a clean and efficient *** this work,we report a new photocatalyst by doping F ion on BiVO_(4) that can efficiently degrade glyphosate and reduce the toxic emissions of aminomethylphosphonic acid(AMPA)through the selective(P)−C−Ncleavage in comparison of BiVO_(4) *** results demonstrate that the best suppression of AMPA formation was achieved by the catalyst of 0.3F@BiVO_(4) at pH=9(AMPA formation below10%).In situ attenuated total reflectance Fourier transforms infrared(ATR-FTIR)spectroscopy indicates that the adsorption sites of glyphosate on BiVO_(4) and 0.3F@BiVO_(4) are altered due to the difference in electrostatic *** an absorption alteration leads to the preferential cleavage of the C−Nbond on the N−C−P skeleton,thereby inhibiting the formation of toxic *** results improve our understanding of the photodegradation process of glyphosate catalyzed by BiVO_(4)-based catalysts and pave a safe way for abiotic degradation of glyphosate.

关键词： Fluorine-doped BiVO_(4) Glyphosate AMPA Photocatalytic degradation Seletive oxidation

Synthesis of novel chiral phosphine-triazine ligand derived fromα-phenylethylamine for Pd-catalyzed asymmetric allylic alkylation

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Chinese Chemical Letters 2008年第3期19卷 261-263页

作者： Jia di huang Xiang Ping Hu Zhuo Zheng Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 PR China Graduate School of Chinese Academy of Sciences Beijing 100039 PR China

A novel chiral phosphine-triazine ligand was synthesized from chiral α-phenylethylamine through a three-step procedure. In a model reaction of Pd-catalyzed allylic alkylation of rac-1,3-diphenylprop-2-en-1-y1 pivalat... 详细信息

关键词： Synthesis α-Phenylethylamine Phosphine-triazine ligand Pd-catalyzed allylic alkylation

The 2nd International Association of Neurorestoratology Annual Conference(IANAC) Summary

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Neuroscience Bulletin 2009年第4期25卷 229-232页

作者： Lin CHEN,Da-Qian huang,di CHEN,Hong-Yun huang

The 2nd International Association of Neurorestoratology Annual Conference （IANAC） was successfully held in Beijing, China, from April 24 to 26, 2009. More than 200 representatives from 30 countries and regions attended the meeting and carried out extensive academic communications and reached important consensus on many issues in neuroregeneration, neural structural repair, neural replacement, neuroprotection, neuromodulation, neurorehabilitation, neuroplasticity and other areas in the field of neurorestoratology. The genera/assembly adopted ＂Beijing Declaration of International Association of Neurorestoratology＂（Beijing Declaration） that was proposed by 32 scientists from 18 countries.

关键词： The 2nd International Association of Neurorestoratology Annual Conference IANAC Summary

TOAST: Automated Testing of Object Transformers in Dynamic Software Updates

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Journal of Computer Science & Technology 2022年第1期37卷 50-66页

作者： Ze-Lin Zhao di huang Xiao-Xing Ma State Key Laboratory for Novel Software Technology Nanjing UniversityNanjing 210023China

Dynamic software update(DSU)patches programs on the *** often involves the critical task of object transformation that converts live objects of the old-version program to their semantically consistent counterparts under the new-version *** task is accomplished by invoking an object transformer on each stale ***,a defective transformer failing to maintain consistency would cause errors or even crash the *** propose TOAST(Test Object trAnSformaTion),an automated approach to detecting potential inconsistency caused by object *** first analyzes an update to identify multiple target methods and then adopts a fuzzer with specially designed inconsistency guidance to randomly generate object states to drive two versions of a target *** creates two corresponding execution traces and a pair of old and new *** finally performs object transformation to create a transformed object and detects inconsistency between it and the corresponding new object produced from scratch by the new ***,TOAST checks behavior inconsistency by comparing the return variables and exceptions of the two *** evaluation on 130 updates with default transformers shows that TOAST is promising:it got 96.0%precision and 85.7%recall in state inconsistency detection,and 81.4%precision and 94.6%recall in behavior inconsistency *** inconsistency guidance improved the fuzzing efficiency by 14.1%for state inconsistency detection and 40.5%for behavior inconsistency detection.

关键词： object state transformer inconsistency detection dynamic software update(DSU) fuzzing testing

Flame instability analysis of diethyl ether-air premixed mixtures at elevated pressures

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Chinese Science Bulletin 2010年第3期55卷 314-320页

作者： ZHANG Ni di YaGe huang ZuoHua ZHANG ZhiYuan State Key Laboratory of Multiphase Flow in Power Engineering Xi 'an Jiaotong University Xi 'an 710049 China

Combustion characteristics of premixed diethyl ether-air mixtures were studied at different equivalence ratios and elevated initial pressures using schlieren photography and spherically propagating flame. Laminar burning velocities, Markstein number and critical radii at onset of cellular structure were obtained. The results show that an increase in initial pressure leads to a decrease in the unstretched laminar burning velocities. Laminar burning velocities give their peak values at the equivalence ratio of 1.1. Markstein number decrease with the increase of initial pressure and equivalence ratio, indicating that the instability of flame front is increased with the increase of initial pressure and equivalence ratio. The critical radii at onset of cellular flame structure are decreased with the increase of initial pressure.

关键词：不稳定性分析空气混合物火焰结构压力升高乙醚层流燃烧速度初始压力预混

(Z)-a-Selanyl Alkenyl Grignard Reagents as Convenient Precursors for Stereoselective Synthesis of Trisubstituted Alkenes

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Chinese Chemical Letters 2002年第12期13卷 1164-1167页

作者： Ming Zhong CAI Chun Yun PENG Jia di huang Department of Chemistry Jiangxi Normal UniversityNanchang 330027

Z)-a-Selanyl alkenyl Grignard reagents 2 were prepared conveniently by treatment of a-bromovinylselenides 1 with magnesium filings in THF. Intermediates 2 were reacted with alkyl iodides in the presence of CuI or Pd(PPh3)4 to afford (Z)-1,2-disubstituted vinylselenides 3, which were cross-coupled with Grignard reagents in the presence of (PPh3)2NiCl2 to give trisubstituted alkenes 4 stereoselectively in good yields.

关键词： a-Bromovinylselenides (Z)-a-selanyl alkenyl Grignard reagents stereoselective synthesis trisubstituted alkene.