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Laser-induced phase segregation of inorganic halide perovskite alloy nanowires for optical switch

Nano Research 2025年第2期18卷 878-886页

作者： Qihang Lv Xia Shen Xuyang Li Jianzhe Liu Zhaohui Shan Liantuan Xiao Pengfei Guo Johnny CHo College of Physics and Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China Huangshan Bright Semiconductor Co. Ltd.Huangshan 245021China Department of Materials Science and Engineering City University of Hong KongKowloonHong Kong 999077China Institute for Materials Chemistry and Engineering Kyushu UniversityFukuoka 819-0395Japan

Inorganic perovskitenanostructures have attracted considerable attention for their tunable band gaps and excellent optoelectronic *** is inevitable that phase segregation of halide perovskite usually occurs in mixed-halide perovskites under a focused laser llumination,which caused by photo-induced halide-ion ***,we reported an uniform perovskite alloy nanowires via a chemical vapor deposition(CvD)*** characterization reveals that these perovskite nanowires have independent linear morphology_with high-quality ***-photoluminescence(PL)spectra exhibit that these nanowire structures show a dual-wavelength emissions at 690 and 570 nm,***,time-dependent PL intensity of the emission peak at 690 nm increased by the decrease of the emission peak at 570 nm under a focused laser llumination,indicating the formation of phase segregation at the excited ***,based on these as-grown halide perovskite CsPbBr2.52lo.48 nanowires,a reasonably optical switch is designed and *** optical switch may have potential applications in timed blasting system and time-delay circuit in the future.

关键词： perovskite alloy nanowires phase segregation dual-wavelength emission optical switch nanophotonics

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Regulating Molecular Structure of S,N-Heteroacene Non-fullerene Acceptors to Achieve Efficient Photoelectric Properties

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Chinese Journal of Chemistry 2025年第1期43卷 13-22页

作者： Mingtao Liu Peipei Zhu Shiting Lai Xiage Zhang Yuang Fu Ling Xue Dan Liu Kui Feng Xinhui Lu Xugang Guo Xunfan Liao Yiwang Chen Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education College of Chemistry and MaterialsJiangxi Normal University99 Ziyang AvenueNanchangJiangxi330022 China Department of Materials Science and Engineering Southern University of Science and Technology(SUSTech)ShenzhenGuangdong518055 China Department of Physics Chinese University of Hong KongNew TerritoriesKowloonHong Kong999077 China

The ternary strategy has demonstrated its efficacy in improving charge transport in organic solar cells(OSCs).Here,three novel non-fullerene acceptors,SN6C9-4F,SN6C9-4Cl and SN6C10-4F,based on S,N-heteroacene linear backbone were designed and *** three acceptors exhibit excellent molecular coplanarity,high crystallinity and possess a deep-lying lowest unoccupied molecular orbital energy level,which is beneficial for charge transport and injection in organic field-effect transistors(OFETs).Notably,the OFET devices based on all three acceptors achieved impressive electron mobilities,with SN6C10-4F achieving up to 0.73 cm^(2)·V^(-1)·s^(-1),which is one of the highest values among A-D-A type small *** addition,the OSCs device based on PBDB-T:SN6C9-4F exhibited the best power conversion efficiency of 12.07%owing to its optimal morphology and enhanced charge ***,the incorporation of SN6C9-4F into the efficient PM6:L8-BO binary system to form ternary OSCs resulted in extended absorption range,enhanced donor crystallization,improved and more balanced charge transport,ultimately leading to an improvement of PCE from 17.78%to 18.32%.This study highlights the potential of developing acceptors with distinct structures from Y-series acceptors to broaden absorption and regulate donor crystallization,providing a novel approach to enhance the PCE of OSCs.

关键词： S,N-Heteroacene Optoelectronic devices High electron mobility Ternary strategy Regulate crystallinity

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Atomic indium decorated graphene for dendrite-free sodium anodes towards high-energy-density sodium-metal batteries

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Journal of Energy Chemistry 2025年第5期104卷 44-51页

作者： Pengchao Wen Junwei Sun Yaguang Li Xiaoyu Shi Huijuan Huang Pengfei Lu Jieqiong Qin Yuejiao Li Qianwen Yin Xiaofei Yang Haodong Shi Yan Yu Zhong-Shuai Wu State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian National Laboratory for Clean Energy Chinese Academy of Sciences Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and Engineering CAS Key Laboratory of Materials for Energy Conversion University of Science and Technology of China College of Science Henan Agricultural University Division of Energy Storage Dalian Institute of Chemical Physics Chinese Academy of Sciences University of Chinese Academy of Sciences

Na metal batteries （SMBs） have emerged as a fascinating choice for large-scale energy ***,dendrite formation on Na metal anode has been acknowledged to cause inferior cycling stability and safety ***,we report the design of atomic indium-decorated graphene （In/G） to inhibit the growth of Na dendrites and substantially improve the stability of high-energy-density *** from the high-valence In-O-C configuration and evenly distributed sodiophilic sites,the In/G promotes uniform nucleation and in-plane growth of Na on the electrode surface,resulting in the intrinsic suppression of Na ***,the In/G@Na||Na batteries exhibit excellent long-term cyclability with 160 h at 8 mA cm-2and ultralow overpotential of 110 mV at 10 mA *** Na3V2（PO4）3||In/G@Na full batteries show exceptionally high reversible discharge capacity of 61 mAh g-1at an ultrahigh rate of 40 C and extremely low capacity decay rate of only 0.021%per cycle over 300 cycles at 1 ***,this strategy provides a new direction for the development of next-generation high-energydensity SMBs.

关键词： Atomic indium decorated graphene Dendrite-free anode High energy density Sodium metal batteries

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Enhanced methanol production from photothermal CO_(2) reduction via multilevel interface design

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Nano Research 2025年第2期18卷 235-241页

作者： Hongmin Wang Bo Shang Chungseok Choi Sungho Jeon Yuanzuo Gao Tyler Wang Nia J.Harmon Mengxia Liu Eric A.Stach Hailiang Wang Department of Chemistry Yale UniversityNew HavenCT 06520USA Energy Sciences Institute Yale UniversityWest HavenCT 06516USA School of Materials Science and Engineering Southeast UniversityNanjing 211189China Current address:SKKU Advanced Institute of Nanotechnology and Department of Nanoengineering Sungkyunkwan UniversitySuwon 16419Republic of Korea Department of Materials Science and Engineering University of PennsylvaniaPhiladelphiaPA 19104USA Department of Physics Yale UniversityNew HavenCT 06511USA Department of Electrical Engineering Yale UniversityNew HavenCT 06511USA

Photothermal CO_(2) hydrogenation is a promising route to produce methanol as a sustainable liquid solar ***,most existing catalysts require a combination of solar irradiation and additional heat input to achieve a satisfactory reaction *** the few that can be driven solely by light,their reaction rates are one order of magnitude *** develop a photothermal catalyst with multilevel interfaces that achieves improvedmethanol production from photothermal CO_(2) hydrogenation without external *** catalyst features a layered structure comprising Cu/ZnO/Al_(2)O_(3)(CZA)covered by oxidized carbon black(oCB),where the oCB/CZA interface promotes efficient heat generation and transfer,and the Cu/oxide interface contributes to high catalytic *** a mild pressure of 8 bar,our oCB/CZA catalyst shows a methanol selectivity of 64.7%with a superior production rate of 4.91 mmol-geza-1-h-1,at least one order of magnitude higher than other photothermal catalysts solely driven by *** work demonstrates a photothermal catalyst design strategy for liquid solar fuel production.

关键词： photothermal catalysis CO_(2)hydrogenation methanol production solar fuel multilevel interface Cu/ZnO/Al_(2)O_(3)(CZA)catalyst

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Integrated study of morphology, structure, and dielectric behavior in PZT-SASF ceramics at the morphotropic phase boundary

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Ceramics International 2025年第13期51卷 17226-17237页

作者： Messai, Bahia Makhloufi, Rachid Keziz, Ahcen Benmakhlouf, Aymen Nouiri, Mourad Mohaymen Taha, Taha Abdel University of Biskra P.O. Box 145 Biskra07000 Algeria Department of Physics Physics and Chemistry of Materials Laboratory University Pole M'sila28000 Algeria Faculty of Science of Gabes University of Gabes Gabes6079 Tunisia Physics and Engineering Mathematics Department Faculty of Electronic Engineering Menoufia University Menouf32952 Egypt

This research explores the synthesis and electrical characterization of SrF2-modified lead zirconate titanate Pb1-xSrx[(Zr0.43Ti0.52) (Al0.5Sb0.5)0.05]O3-xF2x, referred to as PZT-SASF ceramics. The synthesis was completed using solid-state methods, focusing on properties near the morphotropic phase boundary (MPB). The samples were analyzed using various laboratory techniques. Phase formation was studied using powder X-ray diffraction (XRD). This analysis revealed the coexistence of tetragonal and rhombohedral phases. Microstructural examination with scanning electron microscopy (SEM) showed a non-uniform distribution of large grains and some micro-sized pores. Impedance and electric modulus measurements were performed over a frequency range of 0.1 kHz–1 MHz and temperatures from 300 to 700 K. The results demonstrated the influence of grain structure on capacitive and resistive properties. The Nyquist plot revealed how grains contribute to resistance and capacitance. An appropriate electrical circuit was used for equivalent circuit analysis. Fitting procedures were implemented across all temperatures to determine grain resistance and capacitance values. Incorporating Sr2+ ions at the Pb-site and F− ions at the O-site enhanced the dielectric constant at higher temperatures. Finally, the activation energy of the synthesized ceramics increased from 0.7 eV at x = 0.0 to 1.12 eV at x = 0.08 and then decreased to 0.97 eV at x = 0.1. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Activation energy

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Axial coordinated iron-nitrogen-carbon as efficient electrocatalysts for hydrogen evolution and oxygen redox reactions

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Chinese Chemical Letters 2025年第1期36卷 637-642页

作者： Yanan Zhou Li Sheng Lanlan Chen Wenhua Zhang Jinlong Yang School of Material Science and Chemical Engineering Institute of Mass SpectrometryNingbo UniversityNingbo 315211China Department of Chemical Physics University of Science and Technology of ChinaHefei 230026China Department of Material Science and Engineering University of Science and Technology of ChinaHefei 230026China Hefei National Laboratory for Physical Sciences at the Microscale CAS Key Laboratory of Materials for Energy Conversion and Synergetic Innovation Centre of Quantum Information and Quantum PhysicsUniversity of Science and Technology of ChinaHefei 230026China

Designing highly active electrocatalysts for the hydrogen evolution reaction(HER)and oxygen evolution and reduction reactions(OER and ORR)is pivotal to renewable energy ***,based on density functional theory(DFT)calculations,we systematically investigate the catalytic activity of iron-nitrogen-carbon based covalent organic frameworks(COF)monolayers with axially coordinated ligands(denotes as Fe N_(4)-X@COF,X refers to axial ligand,X=-SCN,-I,-H,-SH,-NO_(2),-Br,-ClO,-Cl,-HCO_(3),-NO,-ClO_(2),-OH,-CN and-F).The calculated results demonstrate that all the catalysts possess good thermodynamic and electrochemical *** different ligands axially ligated to the Fe active center could induce changes in the charge of the Fe center,which further regulates the interaction strength between intermediates and catalysts that governs the catalytic ***,FeN_(4)-SH@COF and Fe N_(4)-OH@COF are efficient bifunctional catalysts for HER and OER,FeN_(4)-OH@COF and FeN_(4)-I@COF are promising bifunctional catalysts for OER and *** findings not only reveal promising bifunctional HER/OER and OER/ORR catalysts but also provide theoretical guidance for designing optimum ironnitrogen-carbon based catalysts.

关键词： Axial coordinated ligands DFT calculation Hydrogen evolution reaction Oxygen evolution reaction Oxygen reduction reaction

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Recycling of borosilicate waste glasses through doping with bismuth (III) oxide (Bi₂O₃): Enhancing the structure and radiation shielding properties

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Ceramics International 2025年第5期51卷 6715-6723页

作者： Al-Buriahi, M.S. Alomayrah, Norah Kırkbınar, Mine Çalışkan, Fatih Mansour, Howaida Department of Physics Sakarya University Sakarya Turkey Department of Physics College of Science Princess Nourah bint Abdulrahman University P.O. Box 84428 Riyadh11671 Saudi Arabia Department of Metallurgical and Materials Engineering Faculty of Technology Sakarya University of Applied Sciences Sakarya Turkey Department of Physics Faculty of Women for Arts Science and Education Ain Shams University Cairo11757 Egypt

The present study successfully illustrated the radiation shielding capacities of borosilicate waste glasses enriched with Bismuth(III) oxide (Bi2O3) and their improved physical characteristics. The glass samples, designated as BSG, BSG-10B, and BSG-20B, were carefully fabricated by incorporating 10 % and 20 % Bi2O3 into borosilicate waste glass. This led to enhanced density and hardness, as evidenced by Vickers hardness measurements of 468, 509, and 567 HV, and densities of 2.11, 2.46, and 2.83 g/cm³, respectively. The current study verified that Bi2O3 effectively improved the radiation shielding properties, with the BSG-20B sample exhibiting superior Linear Attenuation Coefficient (LAC) and reduced Half Value Layer (HVL), particularly at lower photon energies, due to bismuth's high atomic number., owing to the high atomic number of bismuth. The PHITS code's accuracy in estimating mass attenuation coefficients (μ/ρ) was tested, with deviations below 2 % compared to the XCOM database, providing trustworthy simulation results. BSG-20B demonstrated comparable, if not better, performance across all photon energy levels compared to radiation shielding glasses used in commercial applications. This emphasizes its potential as an efficient material for protecting against radiation and as a sustainable solution for managing trash by reusing borosilicate waste. Finally, Among the samples tested, BSG-20B exhibited the best radiation shielding performance, with superior Linear Attenuation Coefficient (LAC) and reduced Half Value Layer (HVL), particularly at lower photon energies, demonstrating its potential as an efficient alternative to traditional radiation shielding materials. © 2024 Elsevier Ltd and Techna Group S.r.l.

关键词： Borosilicate glass

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Versatile BiFeO_(3) shining in piezocatalysis:From materials engineering to diverse applications

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Journal of Advanced Ceramics 2025年第3期14卷 1-27页

作者： Jian Dai Zhenhao Fan Hang Xie Yitao Jiao Fu Huang Ahmad Azmin Mohamad Yunfei Chang Yangke Long Dawei Wang School of Instrumentation Science and Engineering Harbin Institute of TechnologyHarbin 150080China Institute of Applied Physics and Materials Engineering University of MacaoAvenida da UniversidadeMacao 999078China Energy Materials Research Group(EMRG) School of Materials and Mineral Resources EngineeringUniversiti Sains MalaysiaNibong Tebal 14300Malaysia Zhengzhou Research Institute Harbin Institute of TechnologyZhengzhou 450046China Department of Transportation and Environment Shenzhen Institute of Information TechnologyShenzhen 518172China

The growing global demand for sustainable solutions to address energy and environmental challenges has spurred significant interest in catalytic *** has emerged as a sustainable technology for environmental remediation and energy conversion because of its unique characteristics of harvesting mechanical energy into electrochemical *** BiFeO_(3)(BFO)stands out among a range of piezocatalysts for its distinctive integration of piezoelectric,multiferroic,and optical *** review critically examines piezocatalytic mechanisms,including energy band theory,screening charge effects,and displacement current theory,revealing the intricate roles of internal charges,screening charges,and piezoelectric electrons in driving catalytic ***,the evolution of BFO-based piezocatalysis is systematically reviewed,emphasizing its structural characteristics,representative synthesis methods,performance optimization strategies,and diverse applications,such as organic pollutant degradation,H_(2) production,H_(2)O_(2)generation,CO_(2)reduction,and *** particular,the underestimated ferroelectric polarization effect of BFO on CO_(2)reduction is critically analyzed and *** review identifies critical challenges and outlines future research directions to advance high-efficiency BFO-based piezocatalytic ***,this comprehensive analysis underscores the potential of BFO in piezocatalysis,bridging materials engineering with practical applications and offering insights into future advancements.

关键词： BiFeO_(3)(BFO) piezocatalysis piezoelectric effect environmental remediation energy conversion

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Optoelectronic and anti-cancerous activity of Indole-7-carboxaldehyde

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Optical and Quantum Electronics 2025年第1期57卷 1-23页

作者： Lakhera, Shradha Rana, Meenakshi Dhuliya, Vivek Chowdhury, Papia Department of Physics School of Sciences Uttarakhand Open University Uttarakhand Haldwani263139 India Uttarakhand Haridwar249404 India Department of Physics and Materials Science and Engineering Jaypee Institute of Information Technology Uttar Pradesh Noida201309 India

Organic compounds have earned remarkable attention in the field of optoelectronics. Their flexible properties make them of high utility. Herein, we have tried to demonstrate the optoelectronic and biological importance of an organic indole derivative Indole-7-carboxaldehyde (I7C) with the help of density functional theory. Different applications like nonlinear optics (NLO), photovoltaics, light emitting activity, gas sensing, and anti-viral activity of I7C have been covered in this study. The high value of first-order hyperpolarizability (491.54 au) helped in the determination of the I7C as a potential NLO material. Different photovoltaic characteristics calculated for I7C like open-circuit voltage (2.33 V), fill factor (0.93), and light harvesting efficiency (42%), were eligible to justify the superior characteristics of I7C to be used as photosensitizing material in photovoltaic devices. The computed values of hole and electron reorganization energies are − 175.34 eV and − 171.43 eV respectively and radiative lifetime of 2.04 ns supported the light-emitting behavior of I7C. The ammonia sensing capability of the I7C was determined using the adsorption energy (540.14 eV). Finally, the molecular docking analysis of I7C with carcinogenetic protein cytochrome P450 2A6 enzyme gave the well-inhibiting efficiency of I7C against the cancer proteins and justifies the anti-cancerous nature of I7C. Thus, the overall study was successful in theoretically predicting the optoelectronic and biological importance of the title molecule. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2025.

关键词： Laser beams

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Multi-objective optimization of ultra-high performance concrete based on life-cycle assessment and machine learning methods

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Frontiers of Structural and Civil engineering 2025年第1期19卷 143-161页

作者： Min WANG Mingfeng DU Xiaoying ZHUANG Hui LV Chong WANG Shuai ZHOU China Merchants Chongqing Communications Technology Research and Design Institute Co. Ltd.Chongqing 400067China College of Materials Science and Engineering Chongqing UniversityChongqing 400045China Department of Mathematics and Physics Leibniz Universität HannoverHannover 30167Germany Department of Geotechnical Engineering College of Civil EngineeringTongji UniversityShanghai 200092China

Ultra-high performance concrete(UHPC)has gained a lot of attention lately because of its remarkable properties,even if its high cost and high carbon emissions run counter to the current development *** lower the cost and carbon emissions of UHPC,this study develops a multi-objective optimization framework that combines the non-dominated sorting genetic algorithm and 6 different machine learning methods to handle this *** key features of UHPC are filtered using the recursive feature elimination approach,and Bayesian optimization and random grid search are employed to optimize the hyperparameters of the machine learning prediction *** optimal mix ratios of UHPC are found by applying the multi-objective algorithm non-dominated sorting genetic algorithm-Ⅲ and multiobjective evolutionary algorithm based on adaptive geometric *** results are evaluated by technique for order preference by similarity to ideal solution and validated by *** outcomes demonstrate that the compressive strength and slump flow of UHPC are correctly predicted by the machine learning *** multiobjective optimization produces Pareto fronts,which illustrate the trade-off between the mix’s compressive strength,slump flow,cost,and environmental sustainability as well as the wide variety of possible *** research contributes to the development of cost-effective and environmentally sustainable UHPC,and aids in robust,intelligent,and sustainable building practices.

关键词： ultra-high performance concrete machine learning multi-objective optimization life-cycle assessment

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