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Dual-compressed photoacoustic single-pixel imaging

National science Review 2023年第1期10卷 187-195页

作者： Yuning Guo Baowen Li Xiaobo Yin Department of Mechanical Engineering University of Colorado Department of Material Science and Engineering Department of Physics Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Materials Science and Engineering Program University of Colorado

Photoacoustic imaging,an acoustic imaging modality with potentially optical resolution in an optical turbid medium,has attracted great ***,the convergence of wavefront optimization and raster scanning in computational photoacoustic imaging leads to the challenge of fast mapping,especially for a spatial resolution approaching the acoustic deep-subwavelength *** a sparse sampling paradigm,compressive sensing has been applied in numerous fields to accelerate data acquisition without significant quality *** this work,we propose a dual-compressed approach for photoacoustic surface tomography that enables high-efficiency imaging with 3D spatial resolution unlimited by the acoustics in a turbid *** dual-compressed photoacoustic imaging with single-pixel detection,enabled by spatially optical modulation with synchronized temporally photoacoustic coding,allows decoding of the fine optical information from the modulated acoustic signal even when the variance of original photoacoustic signals is *** perform a proof-of-principle numerical demonstration of dual-compressed photoacoustic imaging, that resolves acoustic sub-acoustic-wavelength details with a significantly reduced number of measurements,revealing the potential for dynamic *** dual-compressed concept,which transforms unobtrusive spatial difference into spatio-temporal detectable information,can be generalized to other imaging modalities to re alize efficient,high-spatial-resolution imaging.

关键词： photoacoustic imaging compressive sensing single-pixel imaging surface tomography

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Texture development and surface reconstruction of BiVO_(4)photoanode via one-pot hydrothermal reaction for enhanced photoelectrochemical water splitting

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Journal of Advanced Ceramics 2025年第3期14卷 133-141页

作者： Sung Won Hwang Yoo Jae Jeong Runfa Tan Indhujasri Saravanan Hyun Soo Han Dong Hoe Kim In Sun Cho Department of Energy Systems Research Ajou UniversitySuwon 16499Republic of Korea Department of Material Science&Engineering Ajou UniversitySuwon 16499Republic of Korea Department of Mechanical Engineering Stanford UniversityStanford 94305USA Department of Material Science&Engineering Korea UniversitySeoul 02841Republic of Korea Materials Science and Engineering Program University of Colorado BoulderBoulder 80303USA

The simultaneous optimization of the bulk and surface characteristics of photoelectrodes is essential to maximize their photoelectrochemical(PEC)*** report a novel one-pot hydrothermal synthesis of textured and surface-reconstructed BiVO_(4)photoanodes(ts-BVO),achieving significant improvements in PEC water *** controlling precursor molarity and ethylene glycol(EG)addition,we developed a stepwise dual reaction(SDR)mechanism,which enables simultaneous bulk texture development and surface *** optimized CoBi/ts-BVO photoanode exhibited a photocurrent density of 4.3 mA∙cm^(−2)at 1.23 V *** hydrogen electrode(RHE)with a high Faradaic efficiency of 98%under one sun *** with nontextured BiVO_(4),the charge transport efficiency increased from 8%to 70%,whereas the surface charge transfer efficiency improved from 9%to 85%.These results underscore the critical role of both bulk and surface engineering in enhancing PEC *** findings offer a streamlined approach for improving the intrinsic properties of photoanodes in solar water splitting.

关键词： BiVO_(4) hydrothermal texture surface reconstruction ethylene glycol(EG) photoelectrochemical water splitting

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Simultaneous improving luminescence intensity and stability of CsPbBr_(3):SCN−@Eu/Zr-Uio-66-NH_(2) with tunable emissions from blue to green and applications in indoor photovoltaics

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Nano Research 2024年第8期17卷 6879-6887页

作者： Minze Li Yao Sun Honglai Lu Peifen Zhu Ruihong Wang Guofeng Wang Key Laboratory of Functional Inorganic Material Chemistry Ministry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China Department of Electrical Engineering and Computer Science University of MissouriColumbiaMO 65211USA

The construction of stable and efficient materials that emit blue and green light remains a *** the blue light materials reported,metal-organic framework(MOF)materials are rarely reported as blue phosphors due to their weak luminescence *** on the construction of CsPbBr_(3)@MOF(CPB@MOF),an innovative idea was proposed to simultaneously enhance the green luminescence of CPB and the blue luminescence of MOF through the interaction between CPB and MOF for the first *** expected,the blue luminescence from CPB:7%SCN−@0.5%MOF:Eu as well as the green luminescence from 5%CPB:7%SCN−@MOF:Eu was sufficient to construct high-performance light-emitting diode(LED)devices and further excite solar cells to generate stable photoelectric *** white LED(WLED)device with excellent color quality(color rendering index(CRI)=96.2)and correlated color temperature(CCT=9688 K)can be constructed by using the obtained blue-emitting CPB:7%SCN-@0.5%MOF:Eu,green-emitting 5%CPB:7%SCN−@MOF:Eu,and red-emitting PPB:30%Mn^(2+).The density functional theory(DFT)theoretical calculation results indicate that the p orbital of Pb plays the major role in the conduction band,and the p orbital of Br plays the major role in the valance band of CPB and CPB:SCN−.While the p orbital of O plays the major role in both the conduction band and valance band of *** heat capacity of CPB and CPB:SCN−separately reaches the Dulong–Petit limit at 200 and 400 K,indicating that the thermal stability of CsPbBr_(3)increases after SCN−doping.

关键词： CsPbBr_(3):SCN−@Uio-66-NH_(2) composites luminescence stability white light-emitting diodes(WLEDs) indoor photovoltaics density functional theory(DFT)calculation

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Highly sensitive Fe^(3+)luminescence detection via single-ion adsorption

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Chinese Chemical Letters 2024年第1期35卷 431-434页

作者： Yujing Li Xiaojun Zhang Zicheng Wang Lina Zhao Yuxin Li Key Laboratory of Function Inorganic Material Chemistry(MOE) School of Chemistry and Material Scienceand School of Civil EngineeringHeilongjiang UniversityHarbin 150080China Department of Food&Environmental Engineering East University of HeilongjiangHarbin 150066China

To achieve a lower detection limit has always been a goal of analytical ***,we demonstrate the first picomolar level detection capability for Fe3+ion via luminescence detection *** results of structural analysis and theoretical calculation show that Fe3+ions are adsorbed on the central node of Eu-DBM(DBM=dibenzoylmethane)sensor in the form of single ion at ultralow ***,the pathways of photo-induced charge and energy transfer of the obtained Eu-DBM@Fe^(3+)material have been changed,from the initial DBM-to-Eu^(3+)before Fe^(3+)adsorption to the ultimate DBM-to-Fe^(3+)after adsorption process,which quenches the luminescence of Eu3+*** work not only obtains the highly sensitive luminescence detection ability,but also innovatively proposes the single-ion adsorption mechanism,both of which have important scientific and application values for the development of more efficient detection agents in the future.

关键词： Luminescence detection Lanthanide complex High sensitivity Fe^(3+)ion Single-ion adsorption

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Precise Fabrication of Tetrametallic Metal-Organic Frameworks and Multivariate Hybrids for Enhanced Photothermal Tandem Catalysis

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Chemical Research in Chinese Universities 2024年第6期40卷 1141-1150页

作者： FAN Yiwen WANG Yang WANG Huijuan CHEN Yuzhen LI Zhibo Department of Chemistry College of Chemistry and Chemical EngineeringQingdao University of Science and TechnologyQingdao 266071P.R.China Experimental Center of Engineering and Material Science University of Science and Technology of ChinaHefei 230026P.R.China

Multiple metal sites doped in metal-organic frameworks (MOFs) are essential for their promising application in cascade ***,precision synthesis of tetrametallic MOFs with total coordination and regular shapes is challenging due to the different coordination abilities of four metal ***,a series of tetrametallic MOFs (t-MOFs) with four regular morphologies is successfully constructed by regulating the metal ratio,amount of morphologic modulating reagent or growth *** t-MOFs can be flexibly oxidized to afford porous metal oxides (MxCo_(3)O_(4),M=CuZnNi) under air or reduced to carbon-encapsulated CuCoNi under H_(2)/Ar for different reactions to maximize the value-in-use of *** particular,the t-MOF@MxCo_(3)O_(4) obtained upon the surface oxidation of t-MOF well integrates the Lewis-base sites from MOF core with photothermal oxidation activity from MxCo_(3)O_(4) *** hybrid effectively catalyzes the cascade reaction of styrene oxidation coupling Knoevenagel condensation under visible ***,the by-product,benzaldehyde,is successfully converted to easily separated benzylidene malononitrile to finally obtain pure styrene epoxide (SO).In MxCo_(3)O_(4),Ni species afford good photothermal effect,Cu and Co species provide catalytic activity,and Zn species increase SO *** host-object coordination and the synergy among objects may greatly boost more complex reactions in the future.

关键词： Metal-organic framework Multimetallic site Photothermal catalysis Cascade reaction Host-object coordination

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Surface structural engineering of carbonyl iron powder for enhancing microwave absorption and anti-oxidation performance

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Journal of materials science & Technology 2024年第11期178卷 201-209页

作者： Ming-Lu Huang Cheng-Long Luo Chang Sun Kun-Yan Zhao Yingqing Ou Ming Wang Chongqing Key Laboratory of Soft-Matter Material Chemistry and Function Manufacturing School of Chemistry and Chemical EngineeringSouthwest UniversityChongqing 400715China Department of Chemistry National University of Singapore3 Science Drive 3117543Singapore

Surface structural engineering is desirable in modifying the surface performance of carbonyl iron powder(CIP)to enhance microwave absorption(MA)and anti-oxidation ***,the surface shape-dependent CIP absorbers are designed via surface coating with zinc oxide(ZnO)nanoparticles and then a thermal annealing *** morphology of ZnO nanoparticles which can be easily regulated by controlling the annealing temperature ultimately affects the MA performance of CIP coating with ZnO nanoparticles(CIP@ZnO).The core-shell CIP@ZnO particles with cubic cone ZnO nanoparticles exhibit ex-cellent MA performance and thermal stability in comparison to the original ***,the CIP@ZnO annealed at 350 ℃(CIP@ZnO-350)samples which have the cubic cone ZnO nanoparticles exhibit a min-imum reflection loss(RLmin)of-55.35 dB at a thickness of 2.1 mm and a maximum effective absorp-tion bandwidth(EAB)of 7.09 GHz at a thickness of 2.0 *** addition,the antioxidant property of the CIP@ZnO composite particles is abruptly enhanced,which breaks the restriction of the application of CIP at high *** superior MA performance of CIP@ZnO particles with cubic cone ZnO nanoparti-cles comes from the enhancement in surface shape-dependent multiple microwave scattering,interfacial polarization,and electromagnetic-dielectric synergism between ZnO and CIP.

关键词： Microwave absorption Carbonyl iron powder Anti-oxidation Interfacial polarization Surface structural engineering

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Temperature-and Pressure-Dependent Emissions and Crystal-Glass Transition of a Hybrid Manganese Bromide

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Chinese Journal of chemistry 2025年第5期43卷 501-507页

作者： Kai Li Zi-Ying Li Hui-Rong Dong Yan Chen Zhi-Gang Li Yong-Qiang Chen Rui Feng Wei Li Department of Chemistry and Chemical Engineering Jinzhong UniversityJinzhongShanxi030619 China School of Materials Science and Engineering Smart Sensing Interdisciplinary Science CenterNankai University&TKL of Metal and Molecule Based Material ChemistryTianjin300350 China

Comprehensive Summary Herein,the temperature-and pressure-stimulated responsive behavior as well as crystal-glass phase transition of a new zero-dimensional hybrid manganese bromide[4-MTPP]2[MnBr4][4-MTPP+=(4-methoxybenzyl)tris(phenyl)phosphonium]were *** experiment results demonstrate that[4-MTPP]2[MnBr4]shows typical green photoluminescence emission centered at 522.4 nm excited by UV light.

关键词： Hybrid manganese halides Photoluminescence Stimuli-responsive behavior Crystal-glass phase transition

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TiO_(2)photocatalytic ceramic membranes for water and wastewater treatment:Technical readiness and pathway ahead

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Journal of materials science & Technology 2024年第16期183卷 152-164页

作者： Chin Ho Kirk Peikui Wang Chiang Yon Douglas Chong Qi Zhao Jianguo Sun John Wang Department of Material Science and Engineering Faculty of EngineeringNational University of Singapore117574Singapore Department of Chemistry University of SherbrookeCanada ST Engineering Advanced Material Engineering Pte.Ltd. 619523Singapore National University of Singapore(NUS)Research Institute(Chongqing) Chongqing Liang Jiang New AreaChongqing401120China

TiO_(2)is one of the best-known environmentally friendly photocatalysts that has demonstrated the great potential to degrade a wide variety of organic foulants in water and wastewater treatment when placed under UV ***,TiO_(2)-based photocatalytic membranes are at the forefront of photodegra-dation research and technical *** membrane setup provides a high contact surface area for ef-fective filtration and degradation,without the necessary hassle of photocatalyst recovery after water and wastewater ***,TiO_(2)photocatalytic ceramic membranes have become an emerging re-search area due to the inherent chemical and mechanical stability of ceramic membranes,which enables them to outperform polymeric *** the recent shift from polymeric to ceramic membranes in industrial applications,TiO_(2)photocatalytic ceramic membranes will become a key player among the next-generation ceramic membranes,as they are capable of multiple *** review provides a timely and focused investigation into the fabrication and application of such TiO_(2)photocatalytic ceramic membranes for water and wastewater *** benefits of using photocatalytic ceramic membranes in filtration,such as a higher foulant removal efficiency,higher water permeability,and much improved antifouling capabilities,are highlighted and ***,the current research,technical readiness,and remaining gaps are identified,and a set of critical insights are provided using the available data to guide the developmental pathway of practical TiO_(2)photocatalytic ceramic membranes for water and wastewater treatment.

关键词： Water treatment Photocatalytic ceramic membranes Antifouling Titanium dioxide(TiO_(2))

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A Self-Healing Elastomer with Extremely High Toughness Achieved by Acylsemicarbazide Hydrogen Bonding and Cu^(2+)-Neocuproine Coordination Interactions

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Chinese Journal of Polymer science 2024年第10期42卷 1425-1434,I0007页

作者： Xiao-Ming An Yi-Ping Wang Tang-Song Zhu Chong Xing Xu-Dong Jia Qiu-Hong Zhang Key Laboratory of High Performance Polymer Material and Technology of MOE Department of Polymer Science and EngineeringSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing210093China State Key Laboratory of Coordination Chemistry Nanjing UniversityNanjing210093China

Elastomers with high mechanical toughness can guarantee their durability during service ***-healing ability,as well as recyclability,can also extend the life of materials and save the consuming cost of the *** efforts have been dedicated to promoting the mechanical toughness as well as the self-healing capability of elastomers at the same time,while it remains a challenge to balance the trade-off between the above properties in one *** we proposed a molecular design driven by dual interactions of acylsemicarbazide hydrogen bonding and Cu^(2+)-neocuproine coordination *** introducing the reversible multiple hydrogen bonds and strong coordination bonds,we successfully fabricated an extremely tough and self-healing *** elastomer can achieve an impressive top-notch toughness of 491 MJ/m^(3).Furthermore,it boasted rapid elastic restorability within 10 min and outstanding crack tolerance with high fracture energy(152.6kJ/m^(2)).Benefiting from the combination of dynamic interactions,the material was able to self-repair under 80℃conveniently and could be reprocessed to restore the exceptional mechanical properties.

关键词： Metal-ligand coordination Hydrogen bond Ultra-tough elastomer Self-healing

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Organic Polymer Framework Enhanced PEO-Based Electrolyte for Fast Li^(+)Migration in All-Solid-State Lithium-ion Batteries

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Chinese Journal of chemistry 2024年第24期42卷 3308-3316页

作者： Jun Chen Quan Zhou Xiaoyan Xu Chuncai Zhou Guorong Chen Yan Li School of Material Science and Engineering Tongji UniversityShanghai 201804China Research Center of Nano Science and Technology Department of ChemistryCollege of SciencesShanghai UniversityShanghai 200444China

With the rapid development of solid-state batteries,solid-state polymer electrolytes(SPEs)have attracted widespread attention due to their excellent environmental friendliness,designability,and forming film ***,due to the limited conductive path of polymers,lithium-ion diffusion kinetics are limited,and low ion conductivity is a huge challenge for SPEs in practical *** work provides a polyethylene oxide(PEO)based polymer electrolyte,which has multiple paths of ion diffusion caused by organic polymer framework of poly(hexaazatrinaphthalene)(PHATN).The unique porous channel,the specific surface characteristics,the coordination of-C=N-groups in PHATN with Li^(+),combined with the mobility of PEO segments,make the SPEs have a good ability to conduct Li^(+).Interestingly,the PHATN-PEO/lithium bis(trifluoromethanesulfonyl)imide(LiTFSI)composite electrolytes exhibit excellent electrochemical *** room temperature,the conductivity of PHATN-PEO electrolyte can reach 1.03×10^(–4)S·cm^(–1),which is greatly improved compared with 3.9×10^(–6)S·cm^(–1)of ***,the lithium-ion transference number of PHATN-PEO electrolyte achieves 0.61,and the electrochemical window increases to 4.82 *** LFP/1%PH-PEO/Li solid-state batteries show good electrochemical *** work reveals an efficient stratagem for the design of polymer solid-state electrolytes.

关键词： Solid polymer electrolytes Poly(hexaazatrinaphthalene) PEO Framework Mobility Coordination

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