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Boosting singlet oxygen generation for salinity wastewater treatment through co-activation of oxygen and peroxymonosulfate in photoelectrochemical process

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Fundamental Research 2025年第1期5卷 165-173页

作者： Qianqian Yang Zhiyuan Feng Yanbo Zhou Hongying Zhao Guohua Zhao shanghai Key Lab of Chemical Assessment and Sustainability Key Laboratory of Yangtze River Water EnvironmentSchool of Chemical Science and EngineeringTongji UniversityShanghai 200092China Key Laboratory of Coal Gasification and Energy Chemical Engineering of Ministry of Education East China University of Science and TechnologyShanghai 200092China

High concentrations of inorganic ions in saline wastewater pose adverse effects on hydroxyl radical(HO•)-dominated ***,we report a unique strategy for boosting singlet oxygen(^(1)O_(2))generation via coactivation of oxygen and peroxymonosulfate(PMS)by regulating the electron transfer regime in the photoelectrochemical *** Fe-N bridge in atomic Fe-modified graphitic carbon nitride(denoted SA-FeCN)favors the construction of electron-defective Fe and electron-rich N vacancies(Nvs)to accelerate directional electron *** produced intermediate(HSO_(4-)O···Fe−Nvs···O-O)as a chemical channel accelerates the directional electron transfer from PMS to further reduce O_(2)to form activated products(SO_(5)^(•−),O_(2)^(•−)),thereby transforming O_(2)into^(1)O_(2).An optimized^(1)O_(2)generation rate of 39.4μmol L^(−1)s^(−1)is obtained,which is 15.7–945.0 times higher than that in traditional advanced oxidation *** kinetics are achieved for removing various phenolic pollutants in a nonradical oxidation pathway,which is less susceptible to the coexistence of natural organic matter and inorganic *** COD removal for coal wastewater and complex industrial wastewater in real scenarios is found to reach a value of 90%-96%in 3 *** work provides a new direction for boosting the 1O2 generation rate,especially for the selective degradation of target electron-rich contaminants in saline wastewater.

关键词： Photoelectrochemical process Singlet oxygen Oxygen activation Peroxymonosulfate activation Electron transfer Saline wastewater

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NIR-Ⅱfluorescence lateral flow immunosensor based on efficient energy transfer probe for point-of-care testing of tumor biomarkers

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Chinese Chemical Letters 2025年第1期36卷 469-473页

作者： Zhaorui Song Qiulian Hao Bing Li Yuwei Yuan Shanshan Zhang Yongkuan Suo Hai-Hao Han Zhen Cheng Shandong Laboratory of Yantai Drug Discovery Bohai Rim Advanced Research Institute for Drug DiscoveryYantai 264117China State Key Laboratory of Drug Research Molecular Imaging CenterShanghai Institute of Materia MedicaShanghai 201203China Institute of Molecular Medicine Joint Laboratory for Molecular Medicine Northeastern University Shenyang 110000China Pharmacy College Shandong First Medical University&Shandong Academy of Medical SciencesJi’nan 250117China University of Chinese Academy of sciences Beijing 100049China

Fluorescence lateral flow immunoassay(LFA)has emerged as a powerful tool for rapid screening of various biomarkers owing to its simplicity,sensitivity and *** is noteworthy that fluorescent probe mainly determines the analytical performance of *** to the emission and excitation wavelengths are located in the visible region,most fluorophores are inevitably subject to light scattering and background ***,we reported a novel LFA sensor based on the second near-infrared(NIR-Ⅱ)fluorescent probe with excellent anti-interference *** designed NIR-Ⅱprobe was the Nd^(3+)and Yb^(3+)doped rare earth nanoparticles(RENPs)by employing Nd^(3+)as energy donor and Yb^(3+)as energy acceptor,which of the donor-acceptor energy transfer(ET)efficiency reached up to 80.7%.Meanwhile,relying on the convenient and effective encapsulation strategy of poly(lactic-co-glycolic acid)(PLGA)microspheres to RENPs,the surface functionalized NIR-Ⅱprobe(RE@PLGA)was obtained for subsequent *** from the optical advantages of NIR-Ⅱprobe,this proposed NIR-ⅡLFA displayed a good linear relationship ranging from 7 ng/mL to 200 ng/mL for the detection ofα-fetoprotein(AFP),an important biomarker of hepatocellular carcinoma(HCC).The limit of detection(LOD)was determined as low as 3.0 ng/m L,which was of 8.3 times lower than clinical cutoff *** is promising that LFA sensor based on this efficient RENPs probe provides new opportunities for high sensitive detection of various biomarkers in biological samples.

关键词： Donor-acceptor energy transfer(ET) Lateral flow immunoassay(LFA) The second near-infrared(NIR-Ⅱ) fluorescence Rare-earth nanoparticles(RENPs) Poly(lactic acid-co-glycolic acid)(PLGA) Tumor biomarker

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Investigation on Dephosphorization of Stainless Steel

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Journal of Iron and Steel Research International 2000年第2期7卷 50-54页

作者： JIANG Guo-chang GUO Shu-qiang ZHANG Xiao-bing ZHUANG Yun-qian XU Kuang-di shanghai University

The principle of the dephosphorization for stainless steels differs from that of other low alloy steels, which should not only decrease phosphorous content efficiently but also keep the concentration of Cr almost lossless. In these cases, two techniques can be selected. The strategy for oxidational dephosphorization is illustrated in terms of “the selective oxidation among elements ［Cr］, ［P］ and ［C］. So there are two critical W［C］ values. If the real W［C］ locates between these two critical values, the dephosphorization process will be optimized. The optimized region deduced theoretically coincides with the reported range very well. The experiment of reductional dephosphorization was carried out in a sealed reactor. The dephosphorization degree reached 55.4 %—78.0 % when the original phosphorous content was 0.04 %—0.05 %. The processing parameters and the way to avoid pollution were suggested. So this process seems to be possibly adopted in industrial scale.

关键词： dephosphorization stainless steels refining

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Molecule configurations modulate packing array and charge transfer in cocrystal engineering

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science China Chemistry 2024年第2期67卷 512-516页

作者： Shenglong An Mengyuan Qiao Xin Jin Xuanying Chen Jianhua Su Lifang Guo Zhiyun Zhang Key Laboratory for Advanced Materials and Joint International Research Laboratory of Precision Chemistry and Molecular Engineering Feringa Nobel Prize Scientist Joint Research CentreFrontiers Science Center for Materiobiology and Dynamic ChemistryEast China University of Science&TechnologyShanghai200237China

Organic cocrystal as an emerging assembly strategy has received increasing attention in constructing multiple functional materials,through continually screening suitable constituent monomers or changing their stoichiometry ***,the role of molecule configuration in the cocrystal field is rarely explored despite the fascinating potential in regulating the packing *** this study,the N,N′-diphenyl-5,10-dihydrophenazine derivatives(DPPs) with the flexible scaffold and different methyl substitutions are selected as the donors bearing various molecular *** a simple collaborative way,a series of cocrystals based on DPPs and OFN(octafluoronaphthalene) are fabricated,exhibiting two self-adaptive molecular stacking arrays.X-ray crystallographic analysis and theoretical calculation unveil their different π···π interactions and charge transfer characters,leading to the significant emission redshift up to 125 nm compared with individual *** a result,controllable molecule stacking structure,tunable emission,and charge transfer properties can be *** study provides a new perspective to reveal the structure-property relationships at the molecular level by controlling the molecule configuration in cocrystal engineering,contributing to the development of cocrystal theoretical physics and organic functional materials.

关键词： cocrystals molecular configuration self-adaptive packing mode charge transfer

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Engineering Two-Phase Bifunctional Oxygen Electrocatalysts with Tunable and Synergetic Components for Flexible Zn-Air Batteries

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Nano-Micro Letters 2021年第8期13卷 175-190页

作者： Yanli Niu Xue Teng Shuaiqi Gong Mingze Xu Shi-Gang Sun Zuofeng Chen shanghai Key Laboratory of Chemical Assessment and Sustainability School of Chemical Science and EngineeringTongji UniversityShanghai 200092People’s Republic of China State Key Lab of Physical Chemistry of Solid Surface College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005People’s Republic of China

Metal-air batteries,like Zn-air batteries(ZABs)are usually suffered from low energy conversion efficiency and poor cyclability caused by the sluggish OER and ORR at the air ***,a novel bimetallic Co/CoFe nanomaterial supported on nanoflower-like N-doped graphitic carbon(NC)was prepared through a strategy of coordination construction-cation exchange-pyrolysis and used as a highly efficient bifunctional oxygen *** characterizations and density functional theory calculations reveal the formation of Co/CoFe heterostructure and synergistic effect between metal layer and NC support,leading to improved electric conductivity,accelerated reaction kinetics,and optimized adsorption energy for intermediates of ORR and *** Co/CoFe@NC exhibits high bifunctional activities with a remarkably small potential gap of 0.70 V between the half-wave potential(E_(1/2))of ORR and the potential at 10 mA cm^(-2)(E_(j=10))of *** aqueous ZAB constructed using this air electrode exhibits a slight voltage loss of only 60 mV after 550-cycle test(360 h,15 days).A sodium polyacrylate(PANa)-based hydrogel electrolyte was synthesized with strong water-retention capability and high ionic *** quasi-solid-state ZAB by integrating the Co/CoFe@NC air electrode and PANa hydrogel electrolyte demonstrates excellent mechanical stability and cyclability under different bending states.

关键词： Bifunctional electrocatalysts Oxygen electrocatalysis Zn-air battery Co/CoFe heterointerface engineering Density functional theory calculations

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Process optimization and mechanism study of ionic liquid-based mixed amine biphasic solvents for CO_(2) capture in biogas upgrading procedure

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Frontiers of Environmental science & Engineering 2024年第8期18卷 43-57页

作者： Fanzhi Meng Siyu Han Li Lin Jinglin Li Kailun Chen Jianguo Jiang School of Environment Tsinghua UniversityBeijing 100084China

This study focused on enhancing the efficiency of methane upgrading and reducing energy consumption in the biogas upgrading process through the use of biphasic *** aqueous-based biphasic solvent,comprising methyl monoethanolamine(MMEA),N-methyldiethanolamine(MDEA),and 1-butyl-3-methylimidazolium tetrafluoroborate(ItFB),was meticulously *** biogas upgrading effect,regeneration efficiency,regeneration energy consumption,economic viability,selectivity,and phase separation characteristics of this absorbent were systematically *** parameters,including different inlet flow rates,stirring rate,methane inlet concentrations,reaction temperatures,and amine mixing ratios,were adjusted to investigate their impact.A comprehensive evaluation was conducted on the biogas upgrading effect and substance migration trends of the biphasic *** process parameters were determined,demonstrating the favorable impact of the biphasic solvent on biogas *** upgraded gas achieved a methane purity exceeding 96%,and the regeneration energy consumption decreased by 44.27% compared to 30 wt.%MEA,resulting in a more than 50% improvement in economic *** interaction between the ionic liquid and carbamate facilitated the phase separation process,with carbon enrichment after separation exceeding 95%.This enhancement significantly contributed to the improvement of regeneration energy *** study thus concludes that biphasic solvents,exemplified by the described aqueous-based solution,offer a promising avenue for effective biogas upgrading with notable advancements in economic and energy efficiency.

关键词： Biphasic solvents Biogas upgrading Energy consumption Process parameters Ionic liquid

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Online single particle measurement of fireworks pollution during Chinese New Year in Nanning

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Journal of Environmental sciences 2017年第3期29卷 184-195页

作者： Jingyan Li Tingting Xu Xiaohui Lu Hong Chen Sergey A.Nizkorodov Jianmin Chen Xin Yang Zhaoyu Mo Zhiming Chen Huilin Liu Jingying Mao Guiyun Liang shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention Department of Environmental Science and EngineeringFudan UniversityShanghai 200433China Department of Chemistry University of CaliforniaIrvineCalifornia 92697United States Fudan-Tyndall Center Pudan UniversityShanghai 200433China Guangxi Academy of Environmental sciences Nanning 530022China

Time-resolved single-particle measurements were conducted during Chinese New Year in Nanning, China. Firework displays resulted in a burst of SO2, coarse mode, and accumulation mode （100-500 nm） particles. Through single particle mass spectrometry analysis, five different types of particles （fireworks-metal, ash, dust, organic carbon-sulfate （OC-sulfate）, biomass burning） with different size distributions were identified as primary emissions from firework displays. The fireworks-related particles accounted for more than 70% of the total analyzed particles during severe firework detonations. The formation of secondary particulate sulfate and nitrate during firework events was investigated on single particle level. An increase of sulfite peak （80SO3） followed by an increase of sulfate peaks （97HSO7＋96SO7） in the mass spectra during firework displays indicated the aqueous uptake and oxidation of SO2 on particles. High concentration of gaseous SO2, high relative humidity and high particle loading likely promoted SO2 oxidation. Secondary nitrate formed through gas-phase oxidation of NO2 to nitric acid, followed by the condensation into particles as ammonium nitrate. This study shows that under worm, humid conditions, both primary and secondary aerosols contribute to the particulate air pollution during firework displays.

关键词： Chinese New YearFireworksParticle typesSecondary process

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Design,Synthesis,and Optical/Electronic Properties of a Series of Sphere-Rod Shape Amphiphiles Based on the C60-oligofluorene Conjugates

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Chinese Journal of Polymer science 2017年第4期35卷 503-514页

作者： Fu-ai Teng Feng-li Liu Lu Han Zheng-ju Zhu Yi-fang Zhang Zhi-jin Wu 韩哲文张文彬李慧 School of Materials science and Engineering East China University of Science and TechnologyShanghai 200237China Key Laboratory of Polymer Chemistry and Physics of Ministry of Education College of Chemistry and Molecular EngineeringCenter for Soft Matter Science and EngineeringPeking UniversityBeo'ing 100871China

A series of sphere-rod shape amphiphiles were designed and synthesized by connecting the rod-like oligofluorenes with different lengths （OF,） to the different positions of the spherical [60]fullerene （C60） through a rigid linkage. The conjugates were characterized by IH-NMR, 13C-NMR, FTIR, EA and MALDI-TOF mass spectrometry. The optical and electronic properties of the conjugates were studied by UV-Vis absorption spectroscopy, fluorescence spectrometry, and cyclic voltammetry. The results from UV-Vis absorption spectroscopy and cyclic voltammetry indicated that the energy profiles of C60 and OFn remained unchanged when different lengths of OFn were attached to C60. The electron affinities of the OFn-C60 conjugates were close to that of C60, while slight electronic interaction was found between the two individual chromophores （C60 and OFn） in their ground states. The fluorescence spectra exhibited a complete fluorescence quenching in the toluene solution, suggesting an effective energy transfer from OFn to C60. It presents a systematic study on the self- assembly, structure-property relationship, and potential technical applications of the conjugates.

关键词： Shape amphiphiles Fullerene Oligofluorene Donor-acceptor dyads

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Study on Lag time Model of Fire Plume under a Sloped Ceiling

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Journal of Thermal science 2014年第5期23卷 486-493页

作者： WANG Jinhui LI Guoqiang College of Ocean science and Engineering Shanghai Maritime University State Key Laboratory for Disaster Reduction in Civil Engineering Tongji University

It is known that there is a lag time for smoke plume induced by fires transporting from a fire origin to the location of interest underneath an unconfined and flat *** lag behavior of smoke plume also exists for a fire under a sloped ceiling,and is fundamental to estimate the activation time of a fire detector or other fire extinguishing *** study focuses on the lag time of smoke plume under a sloped *** on the weak-plume theory at early-fire phase and previous studies concerning the fire plume characteristics under a sloped ceiling,a calculation method on lag time of fire plume transporting is presented in ***,two dimensionless equations predicting the lag time of fire plume for steady fire and unsteady fire are proposed ***,the critical time calculation equation is also proposed to determine the applicability of quasi-steady assumption for a time-dependent fire.

关键词： Fire Smoke plume Lag time Quasi-steady assumption Sloped ceiling

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Mannose-binding lectin 2 rs11003123 polymorphism is associated with the development of hepatocellular carcinoma in patients with hepatitis B-related cirrhosis in the Chinese population

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Hepatobiliary & Pancreatic Diseases International 2016年第3期15卷 282-288页

作者： Pu-Sen Wang Jing Kuai Hao Li Chun-Guang Wang Bao-Jie Shi Lin Zhong Department of General Surgery Shanghai General HospitalShanghai Jiaotong University School of Medicine Department of Hepatobiliary Surgery Weifang People’s Hospital

BACKGROUND： Mannose-binding lectin 2 （MBL2） plays a key role in the host immune response, but whether it is associ- ated with hepatocellular carcinoma （HCC） is not dear. The present study aimed to identify the association between MBL2 gene polymorphisms and HCC in patients with hepatitis B virus （I-IBV）-related cirrhosis in the Chinese population.

关键词： mannose-binding lectin 2 polymorphism hepatitis B cirrhosis hepatocellular carcinoma

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