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engineering tiramisu-like phase change nanocomposite for superior thermal energy management and electromagnetic interference shielding

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材料科学技术（英文版） 2025年第3期206卷 113-124页

作者： Boyang Hu Hong Guo Ting Li Xiwei Cao Min Cao Weiyan Qi Ying Cui Baoan Li Carbon Neutrality Interdisciplinary Science Centre Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Carbon Neutrality Interdisciplinary Science Centre Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media PollutionCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Department of Energy and Chemical Engineering Tianjin Ren'ai CollegeTianjin 301636China MOE Key Laboratory of Macromolecular Synthesis and Functionalization Department of Polymer Science and EngineeringZhejiang UniversityHangzhou 310027China Laboratoire des Solides Irradiés CEA/DRF/lRAMISEcole Poly techniqueCNRSInstitut Poly technique de ParisPalaiseau F-91128France

Exploiting advanced nanocomposites isochronally integrating outstanding thermal conductivity(TC)and electromagnetic interference shielding effectiveness(EMI SE)can boost the cutting-edge application of phase change ***,we report a tiramisu-like composite(GMP),where the typical"crust-and-cheese"hierarchical structure is replicated by an innovative two-step bidirectional freezing assem-bly(BFA)and compressive ***-aligned graphene array(G-GA)with ultralow ther-mal resistance is fabricated through 1st BFA and *** the 2nd BFA,the MXene-CNF crosslinking network with hydrogen-bond actions is used for encapsulating polyethylene glycol(PEG)onto the microlayers of the G-GA ***,the microlaminated GMP4 achieves a recorded TC of 34.05 W m-1 K-1,unprecedented EMI SE of 87.4 dB,and preferable enthalpy density of 179.4 J cm-3,along with leakage-free function,and eminent thermal ***,the GMP-loaded equipment is demonstrated for efficient microelectronics cooling and sustainable solar energy *** work opens new avenues for multiscale designing multifunctional macro-composites,broadening the application prospects in advanced electronics and solar energy utilization systems.

关键词： Phase change composite Multiscale structure construction Bidirectional freezing assembly Thermal management EMI shielding

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In situ plasmonic & electrochemical fiber-optic sensor for multi-metal-ions detection

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Science China(Information Sciences) 2024年第1期67卷 292-302页

作者： Xiaoling PENG Zhiyong YANG Bo PENG Zhi LI Zhicong REN Xicheng WANG Jiahai LI Zhencheng LI Liang CHEN Daotong YOU Kaiwei LI Jianqing LI Tuan GUO Institute of Photonics Technology Jinan University School of Computer Science and Engineering Macau University of Science and Technology Institute for Environmental and Climate Research Jinan University Key Laboratory of Bionic Engineering of Ministry of Education Jilin University

High precision and high throughput detection of heavy metal ions is essential for water quality monitoring and ***,we propose a plasmonic & electrochemical dual-mode fiber sensing probe for label-free and real-time detection of multiple ions(Pb2+and Cu2+as examples).This sensor comprises a multimode fiber-single mode fiber reflection probe,the outer surface of which is coated with a gold nanofilm to excite the surface plasmon resonance（SPR） optically and simultaneously serves as an electrochemical working *** traditional electrochemical detection,the enrichment of ions cannot be detected in ***,by utilizing the plasmonic & electrochemical dual-mode detection method,various kinds of metal ions can be deposited onto the gold nanofilm and selectively oxidized during forward potential scanning,and the entire electrochemical process can be monitored by SPR *** experimentally demonstrate that the sensor can simultaneously detect Pb2+and Cu2+in a mixed solution in real-time,providing a linear response over the ion concentration range from 10-12to 10-7M and offering an excellent detection limit(1.69×10-14–5.49×10-13M).The proposed dual-mode fiber sensor has the benefits of remote sensing,compact footprint,and cost-effectiveness and shows excellent potential for water quality risk management in difficult-to-reach environments.

关键词： optical fiber sensor surface plasmon resonance electrochemical measurement ions detection water pollution

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Insight into the microbial community of denitrification process using different solid carbon sources: Not only bacteria

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Journal of environmental Sciences 2024年第10期144卷 87-99页

作者： Congyu Li Yu Ling Yanjie Zhang Haiyan Wang Huan Wang Guokai Yan Weiyang Dong Yang Chang Liang Duan State Key Laboratory of Environmental Criteria and Risk Assessment Chinese Research Academy of Environmental SciencesBeijing 100012China College of Environmental Science and Engineering Tongji UniversityShanghai 200092China College of Water Sciences Beijing Normal UniversityBeijing 100875China Research Center of Environmental Pollution Control Technology Chinese Research Academy of Environmental ScienceBeijing 100012China State Environmental Protection Key Laboratory of Estuarine and Coastal Environment Chinese Research Academy of Environmental SciencesBeijing 100012China

There is a lack of understanding about the bacterial,fungal and archaeal communities’composition of solid-phase denitrification(SPD)*** investigated four SPD systems with different carbon sources by analyzing microbial gene sequences based on operational taxonomic unit(OTU)and amplicon sequence variant(ASV).The results showed that the corncob-polyvinyl alcohol sodium alginate-polycaprolactone(CPSP,0.86±0.04 mg NO_(3)^(−)-N/(g·day))and corncob(0.85±0.06 mg NO_(3)^(−)-N/(g·day))had better denitrification efficiency than polycaprolactone(PCL,0.29±0.11 mg NO_(3)^(−)-N/(g·day))and polyvinyl alcoholsodium alginate(PVA-SA,0.24±0.07 mg NO_(3)^(−)-N/(g·day)).The bacterial,fungal and archaeal microbial composition was significantly different among carbon source types such as Proteobacteria in PCL(OTU:83.72%,ASV:82.49%)and Rozellomycota in PVA-SA(OTU:71.99%,ASV:81.30%).ASV methods can read more microbial units than that of OTU and exhibit higher alpha diversity and classify some species that had not been identified by OTU such as Nanoarchaeota phylum,unclassified_f_Xanthobacteraceae genus,etc.,indicating ASV may be more conducive to understand SPD microbial *** co-occurring network showed some correlation between the bacteria fungi and archaea species,indicating different species may collaborate in SPD *** KEGG function prediction results were obtained in two bioinformatic methods generally and some fungi and archaea functions should not be ignored in SPD *** results may be beneficial for understanding microbial communities in SPD systems.

关键词： Solid-phase denitrification Solid carbon source Microbial community ASV analysis OTU analysis

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Polyphenol-mediated interfacial deposition strategy for supported manganese oxide catalysts with excellent pollutant degradation performance

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Chinese Chemical Letters 2024年第5期35卷 493-498页

作者： Dong Cheng Youyou Feng Bingxi Feng Ke Wang Guoxin Song Gen Wang Xiaoli Cheng Yonghui Deng Jing Wei The Key Laboratory of Biomedical Information Engineering of Ministry of Education State Key Lab of Transducer TechnologySchool of Life Science and TechnologyXi’an Jiaotong UniversityXi’an 710049China School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Department of Chemistry State Key Laboratory of Molecular Engineering of PolymersState Key Laboratory of Transducer TechnologyFudan UniversityShanghai 200433China Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China

In persulfate-based advanced oxidation process(PS-AOPs),fixing nanosized metal oxide on processable substrates is highly desirable to avoid the aggregation and loss of nanocatalysts during the practical ***,it is still challenging to develop a versatile strategy for the deposition of metal oxide nanocatalysts on various substrates with different physicochemical ***,polyphenols are utilized as a“molecular glue”and reductant to mediate the interfacial deposition of MnO_(2) nanocatalysts on different ***_(2) nanocatalysts were in-situ grown on macroscope mineral substrates(e.g.,airstone)via an interfacial redox strategy between tannic acid(TA)and oxidized KMnO4,and then employed as a fixed catalyst of peroxymonosulfate(PMS)activation for treating pharmaceutical and personal care products(PPCPs)in *** fixed MnO_(2) exhibited superior catalytic performance toward different PPCPS via a singlet oxygen(^(1)O_(2))-dominated nonradical oxidation *** in the secondary effluent of wastewater treatment plants could be effectively removed by a fixed-bed column of the fixed MnO_(2) with long term *** cycle of Mn^(4+)/Mn^(3+)and surface hydroxyl group of the fixed MnO_(2) was proved to be responsible for the activation of *** work provides a new avenue for developing fixed metal oxides for sustainable water treatment.

关键词： Redox strategy Manganese oxides Fixed catalyst Peroxymonosulfate PPCPs

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Insights into the mechanism of the deterioration of mainstream partial nitritation/anammox under low residual ammonium

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Journal of environmental Sciences 2023年第4期126卷 29-39页

作者： Yandong Yang Yiming Jiang Yanan Long Jiarui Xu Changqing Liu Liang Zhang Yongzhen Peng School of Environmental and Municipal Engineering Qingdao University of TechnologyQingdao 266033China National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery EngineeringBeijing University of TechnologyBeijing 100124China

Residual ammonium is a critical parameter affecting the stability of mainstream partial nitritation/anammox(PN/A), but the underlying mechanism remains unclear. In this study,mainstream PN/A was established and operated with progressively decreasing residual ammonium. PN/A deteriorated as the residual ammonium decreased to below 5 mg/L, and this was paralleled by a significant loss in anammox activity in situ and an increasing nitrite oxidation rate. Further analysis revealed that the low-ammonium condition directly decreased anammox activity in situ via two distinct mechanisms. First, anammox bacteria were located in the inner layer of the granular sludge, and thus were disadvantageous when competing for ammonium with ammonium-oxidizing bacteria(AOB) in the outer layer. Second, the complete ammonia oxidizer(comammox) was enriched at low residual ammonium concentrations because of its high ammonium affinity. Both AOB and comammox presented kinetic advantages over anammox bacteria. At high residual ammonium concentrations,nitrite-oxidizing bacteria(NOB) were effectively suppressed, even when their maximum activity was high due to competition for nitrite with anammox bacteria. At low residual ammonium concentrations, the decrease in anammox activity in situ led to an increase in nitrite availability for nitrite oxidation, facilitating the activation of NOB despite the dissolved oxygen limitation(0.15–0.35 mg/L) for NOB persisting throughout the operation. Therefore, the deterioration of mainstream PN/A at low residual ammonium was primarily triggered by a decline in anammox activity in situ. This study provides novel insights into the optimized design of mainstream PN/As in engineering applications.

关键词： Mainstream partial nitritation/anammox Residual ammonium Granular sludge Comammox

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Research on the contamination failure mechanism of HgCdTe IRFPA detectors 3

Research on the contamination failure mechanism of HgCdTe IR...

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3rd International Computing Imaging Conference, CITA 2023

作者： Liu, YueBo Yan, JiaHui Liao, WenYuan Niu, Hao Chen, XiYu Wang, HongYue Lai, CanXiong Yang, ShaoHua Reliability Physics and Application Technology of Electronic Component Key Laboratory China Electronic Product Reliability and Environmental Testing Research Institute Guangzhou511370 China

ISBN: (纸本)9781510671409

HgCdTe infrared focal plane array imaging detectors have been widely used in a variety of fields such as night vision surveillance, remote sensing mapping and astronomical observation. In recent years, with the development of semiconductor manufacturing processes, the array size of HgCdTe IR focal plane array imaging detectors has gradually increased, and the preparation process has become increasingly complex. During the preparation process, impurity ions can enter the HgCdTe material and cause degradation of device performance or even device failure. This work investigates the distribution of impurity elements in HgCdTe IR focal plane array detectors prepared by both processes and the mechanism by which impurity elements cause device failure. © 2023 SPIE.

关键词： Secondary ion mass spectrometry

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Hybrid peroxi-coagulation/ozonation process for highly efficient removal of organic contaminants

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Chinese Chemical Letters 2023年第10期34卷 86-92页

作者： Shasha Li Jinxin Xie Jinyu Gu Minghua Zhou Key Laboratory of Pollution Process and Environmental Criteria Ministry of EducationCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China Tianjin Key Laboratory of Environmental Technology for Complex Trans-Media Pollution College of Environmental Science and EngineeringNankai UniversityTianjin 300350China Tianjin Advanced Water Treatment Technology International Joint Research Center College of Environmental Science and EngineeringNankai UniversityTianjin 300350China

Aromatic compounds such as phenols presented widely in coal chemical industry wastewater(CCW)render the treatment facing great challenge due to their biorefractory characteristics and potential risks to the environment and human ***-based advanced oxidation processes show promising for these pollutants removal,but the mineralization via ozonation alone is unsatisfactory and not ***,a hybrid peroxi-coagulation/ozonation process(denoted as PCO)was developed using sacrificial iron plate as an anode and carbon black modified carbon felt as cathode in the presence of *** enhanced phenol removal of∼100%within 20 min and phenol mineralization of∼80%within 60 min were achieved with a low energy consumption of 0.35 kWh/g *** this novel process,synergistic effect between ozonation and peroxi-coagulation was observed,and beside O_(3) direct oxidation,peroxone played a dominant role for phenol *** the PCO process,the hydrolyzed Fe species enhanced the generation of reactive oxygen species(ROS),while•OH was dominantly responsible for pollutant *** process also illustrated high resistance to high ionic strength and better performance for TOC removal in real wastewater when compared with ozonation and peroxi-coagulation ***,this process is more cost-effective,being very promising for CCW treatment.

关键词： Coal chemical industry wastewater Phenol removal Catalytic ozonation Peroxi-coagulation Reactive oxygen species

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Green-synthesized, biochar-supported nZVI from mango kernel residue for aqueous hexavalent chromium removal: Performance, mechanism and regeneration

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Chinese Journal of Chemical engineering 2024年第7期71卷 91-101页

作者： Yuting Zhang Yuwei Tang Ruiping Yan Shuang Liang Zhongmou Liu Yadong Yang Key Laboratory of Songliao Aquatic Environment Ministry of EducationJilin Jianzhu UniversityChangchun 130118China School of Environmental Science and Engineering Yancheng Institute of TechnologyYancheng 224051China

A biochar-supported green nZVI(G-nZVI@MKB)composite was synthesized using mango kernel waste with“dual identity”as reductant and biomass of *** G-nZVI@MKB with a Fe/C mass ratio of 2.0(G-nZVI@MKB2)was determined as the most favorable composite for hexavalent chromium(Cr(VI))*** influencing parameters were discussed,and 99.0%of Cr(VI)removal occurred within 360 min under these optimized ***-second order kinetic model and intra-particle diffusion model well depicted Cr(VI)removal *** XRD,FTIR,SEM,and XPS analyses verified the key roles of G-nZVI and functional groups,as well as the primary removal mechanisms involving electrostatic attraction,reduction,and complexation.G-nZVI@MKB2 exhibited good stability and reusability with only a 16.4%decline in Cr(VI)removal after five *** study offered evidence that mango kernel could be recycled as a beneficial resource to synthesize green nZVI-loaded biochar composite for efficient Cr(VI)elimination from water.

关键词： Synthesis Biochar-supported nZVI Hexavalent chromium Reduction Regeneration

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Oxygen vacancy-rich CoMoO4/Carbon nitride S-scheme heterojunction for boosted photocatalytic H_(2)production:Microstructure regulation and charge transfer mechanism

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Journal of Materials Science & technology 2024年第31期198卷 176-185页

作者： Jiani Qin Yanli Dong Xiaojuan Lai Bo Su Bao Pan Chuanyi Wang Sibo Wang School of Environmental Science and Engineering Shaanxi University of Science and TechnologyXi'an 710021China Key Laboratory of Chemical Additives for China National Light Industry School of Chemistry and Chemical EngineeringShaanxi University of Science and TechnologyXi'an 710021China State Key Laboratory of Photocatalysis on Energy and Environment College of ChemistryFuzhou UniversityFuzhou 350116China

Developing highly efficient S-scheme photocatalysts is a subject of immense interest for harnessing solar energy towards sustainable hydrogen ***,a novel S-scheme heterojunction of oxygen vacancy-rich CoMoO_(4)/CN(CMO/CN)photocatalyst was rationally constructed through loading CoMoO_(4)nanorods on carbon nitride(CN)nanosheets via a direct one-pot calcination *** CMO/CN S-scheme heterojunction exhibited enhanced surface area,fine CN dispersion,rich oxygen vacancies,and accelerated charge separation/transfer efficiency,which were conducive to improving photocatalytic H_(2)evolution *** note,the optimal 3%CMO/CN sample displayed the highest H_(2)production rate of 8.35 mmol g^(-1)h^(-1),which is 4.6 folds that of pristine *** situ irradiated X-ray photoelectron spectroscopy(XPS)and electron paramagnetic resonance(EPR)characterizations confirmed the S-scheme charge transfer path between CN and CMO,which greatly promoted spatial charge *** functional theory(DFT)calculations together with contact angle tests revealed the reduced activation energies for H_(2)O dissociation and enhanced hydrophilicity of the CMO/*** CMO/CN photocatalysts also presented high stability and fine *** work may provide insights into the combination of defect engineering and heterojunction designing for high-efficiency solar-to-chemical energy conversion.

关键词： S-scheme CoMoO_(4) Carbon nitride Oxygen vacancy Photocatalysis

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Dynamic coupling of ferrihydrite transformation and associated arsenic desorption/redistribution mediated by sulfate-reducing bacteria

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Journal of environmental Sciences 2024年第1期36卷 39-50页

作者： Wenjing Zhou Huiyan Zhu Shiwen Hu Bowei Zhang Kun Gao Zhi Dang Chongxuan Liu State Environmental Protection Key Laboratory of Integrated Surface Water-Groundwater Pollution Control School of Environmental Science and EngineeringSouthern University of Science and TechnologyShenzhen 518055China The Key Lab of Pollution Control and Ecosystem Restoration in Industry Clusters Ministry of EducationSouth China University of TechnologyGuangzhou 510006China

Sulfate-reducing bacteria play an important role in the geochemistry of iron(oxyhydr)oxide and arsenic(As)in natural environments;however,the associated reaction processes are yet to be fully *** this study,batch experiments coupled with geochemical,spectroscopic,microscopic,and thermodynamic analyses were conducted to investigate the dynamic coupling of ferrihydrite transformation and the associated As desorption/redistribution mediated by Desulfovibrio vulgaris(***).The results indicated that *** could induce ferrihydrite transformation via S^(2-)-driven and direct reduction *** the absence of SO_(4)^(2-),*** directly reduced ferrihydrite,and As desorption and re-sorption occurred simultaneously during the partial transformation of ferrihydrite to *** increase in SO_(4)^(2-)loading promoted the S^(2-)-driven reduction of ferrihydrite and accelerated the subsequent mineralogical *** the low and medium SO_(4)^(2-)treatments,ferrihydrite was completely transformed to a mixture of magnetite and mackinawite,which increased the fraction of As in the residual phase and stabilized *** the high SO_(4)^(2-)treatment,although the replacement of ferrihydrite by only mackinawite also increased the fraction of As in the residual phase,22.1%of the total As was released into the solution due to the poor adsorption affinity of As to mackinawite and the conversion of As^(5+)to As^(3+).The mechanisms of ferrihydrite reduction,mineralogy transformation,and As mobilization and redistribution mediated by sulfate-reducing bacteria are closely related to the surrounding SO_(4)^(2-)*** results advance our understanding of the biogeochemical behavior of Fe,S,and As,and are helpful for the risk assessment and remediation of As contamination.

关键词： Sulfate-reducing bacteria Arsenic Ferrihydrite Transformation Redistribution

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