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Metal-Organic Framework-Derived Metallic Carbon with Record High Radon Gas Capture Performance

CCS Chemistry 2024年第7期6卷 1789-1797页

作者： Shicheng Gong Yi Tao Lixi Chen Qiuting Xu Junhao Lu Fuyin Ma Xia Wang Guodong Li Jun Wan Guoxun Ji Linfeng He Xiaohui Yu Duo Zhang Xuhui Sun Zhifang Chai Shuao Wang State Key laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)and Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123 Institute of Functional nano&Soft Materials laboratory(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials and DevicesJiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123 School of Environment and Material engineering Yantai UniversityYantai 264005 Xi’an Research Institute of Hi-technology Hong Qing TownXi’an 710025 Shanghai Institute of Measurement and Testing technology Shanghai 201203 engineering Institute of Advanced Manufacturing and modern Equipment technology Jiangsu UniversityZhenjiang 212013

Developing efficient adsorbents for radon(Rn)capture from the ambient environment is of paramount importance for public ***,it poses a great challenge due to the chemical inertness and extremely low molar concentration of Rn in ***,we report a zeolite imidazolate frameworkderived metallic carbon adsorbent(Zn@NPC)with record high Rn removal performance under ambient *** one-step pyrolysis,the prepared Zn@NPC possesses pores with a preference for Rn and atomically dispersed Zn sites,achieving a high Rn removal efficiency that doubles in adsorption coefficient(9.47 L·g^(−1))and triples in adsorption kinetic coefficient(20.25 mL·g^(−1)·min^(−1))over the benchmark Rn adsorbent coconut activated *** functional theory calculations elucidate the important role of the metal polarization effect,which cooperates with the pore size confinement effect to boost the overall Rn adsorption *** work launches a promising alternative for practical Rn capture.

关键词： radon removal metal-organic frameworks microporous carbon synergistic effect dynamic adsorption

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All-in-one photoelectric logic gates by Dember photodetectors

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光子学研究:英文版 2023年第7期11卷 1148-1153页

作者： GUOYANG CAO CHANGLEI WANG YU LUO XIAOFENG LI School of Optoelectronic science and engineering&collaborative innovation center of suzhou nano science and technology Soochow UniversitySuzhou 215006China Key laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key laboratory of modern Optical Technologies of the Ministry of Education Soochow UniversitySuzhou 215006China School of Electrical and Electronic engineering Nanyang Technological UniversitySingapore 639798Singapore

Photoelectric logic gates(PELGs) are the key component in integrated electronics due to their abilities of signal conversion and logic operations. However, traditional PELGs with fixed architectures can realize only very limited logic functions with relatively low on–off ratios. We present a self-driving polarized photodetector driven by the Dember effect, which yields ambipolar photocurrents through photonic modulation by a nested grating. The ambipolar response is realized by exciting the whispering-gallery mode and localized surface plasmon resonances,which leads to reverse spatial carrier generation and therefore the contrary photocurrent assisted by the Dember effect. We further design a full-functional PELG, which enables all five basic logic functions(“AND”, “OR”,“NOT”, “NAND”, and “NOR”) simultaneously in a single device by using one source and one photodetector only. Such an all-in-one PELG exhibits a strong robustness against structure size, incident wavelength, light power, and half-wave plate modulation, paving a way to the realization of ultracompact high-performance PELGs.

关键词： effect realization operations

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Flexible electrochromic fiber with rapid color switching and high optical modulation

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nano Research 2023年第4期16卷 5473-5479页

作者： Tianxue Zhu Jiaqing Xiong Jingwei Chen Xinran Zhou Guofa Cai Yuekun Lai Pooi See Lee national engineering laboratory for modern silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China School of Materials science and engineering Nanyang Technological University50 Nanyang AvenueSingapore 639798Singapore College of Chemical engineering Fuzhou UniversityFuzhou 350116China Qingyuan innovation laboratory Quanzhou 362801China innovation center for Textile science and technology Donghua UniversityShanghai 201620China

Though flexible electrochromic devices have shown huge potential application in the fields of safety warning,display and smart windows,limited attention was paid on preparing flexible electrochromic fiber because of the difficulty in fabricating the multilayer electrochromic device structure in one-dimensional *** this study,a flexible electrochromic nylon fiber based on Ag nanowires(NWs)/PEDOT:PSS/WO3 nanoparticles(NPs)(PEDOT:PSS=poly(3,4-ethylenedioxythiophene):polystyrenesulfonic acid)is successfully fabricated,delivering rapid color switching(2.5 and 9 s for bleaching and coloration)and high optical modulation(65.5%at 633 nm),and sustainable to repeated mechanical *** NWs,PEDOT:PSS and WO3 NPs were dip-coated on the nylon fiber,resulting in an electrochromic fiber electrode with stable fiber resistance of 50-100Ω/10 cm,which can withstand mechanical deformation against 300 times of bending cycles with bending radius of 0.5 cm,and sustain 30 times of *** the galvanostatic tests,the capacitance of the electrochromic electrode can maintain 70%of the initial value even after 5,000 times of charge-discharge *** in knotted shape,the fiber still shows excellent color *** study provides a novel method to construct flexible electrochromic fiber and pave the way for the development of flexible optoelectronic devices,such as flexible and wearable displays.

关键词： flexible electrochromic fiber WO3 nanoparticle

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Large aperture phase-coded diffractive lens for achromatic and 16°field-of-view imaging with high efficiency

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Chinese Physics B 2022年第7期31卷 349-360页

作者： Gu Ma Peng-Lei Zheng Zheng-Wen Hu Suo-Dong Ma Feng Xu Dong-Lin Pu Qin-Hua Wang School of Optoelectronic science and engineering and collaborative innovation center of suzhou nano science and technology Soochow UniversitySuzhou 215006China Key laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province and Key laboratory of modern Optical Technologies of Education Ministry of China Soochow UniversitySuzhou 215006China CAS Key laboratory of Space Precision Measurement technology Xi’an 710119China

Diffractive lenses(DLs)can realize high-resolution imaging with light weight and compact *** DLs suffer large chromatic and off-axis aberrations,which significantly limits their practical *** many achromatic methods have been proposed,most of them are used for designing small aperture DLs,which have low diffraction *** the designing of diffractive achromatic lenses,increasing the aperture and improving the diffraction efficiency have become two of the most important design ***,a novel phase-coded diffractive lens(PCDL)for achromatic imaging with a large aperture and high efficiency is proposed and demonstrated experimentally,and it also possesses wide field-of-view(FOV)imaging at the same *** phase distribution of the conventional phase-type diffractive lens(DL)is coded with a cubic function to expand both the working bandwidth and the FOV of conventional *** proposed phase-type DL is fabricated by using the laser direct writing of grey-scale patterns for a PCDL of a diameter of 10 mm,a focal length of 100 mm,and a cubic phase coding parameter of 30π.Experimental results show that the working bandwidth and the FOV of the PCDL respectively reach 50 nm and 16°with over 8%focusing efficiency,which are in significant contrast to the counterparts of conventional DL and in good agreement with the theoretical *** work provides a novel way for implementing the achromatic,wide FOV,and high-efficiency imaging with large aperture DL.

关键词： achromatic imaging diffractive lens phase coding large aperture high efficiency

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Synergically enhanced piezocatalysis performance of eco-friendly(K_(0.52)Na_(0.48))NbO_(3) through ferroelectric polarization and defects

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矿物冶金与材料学报:英文版 2023年第10期30卷 2044-2054页

作者： Min Zhou Laijun Liang Dingze Lu Xiaomei Lu Zheng Wang Fengzhen Huang Pengfei Cheng Dongdong Liu Mengqi Tian Qiuping Wang Yunjie Zhang School of science Xi’an Polytechnic UniversityXi’an 710048China national laboratory of Solid State Microstructures and Physics School Nanjing UniversityNanjing 210093China collaborative innovation center of Advanced Microstructures Nanjing UniversityNanjing 210093China School of Advanced Materials and nanotechnology Xidian UniversityXi’an 710126China national engineering laboratory for modern silk College of Textile and Clothing EngineeringSoochow UniversitySuzhou 215123China

Piezocatalysis has attracted unprecedented research interest as a newly emerging catalysis ***,the inherent insulating property of ferroelectric materials ultimately leads to the poor vibration-electricity conversion ***,this work reports the(K_(0.52)Na_(0.48))NbO_(3) ferroelectric ceramics(KNNFCx),for which the FeCo modification strategy is *** substitution of the moderate amount of FeCo(x=0.015)at Nb site not only optimizes ferroelectricity but also produces beneficial defects,notably increasing Rhodamine B water purification efficiency to 95%.The pinning effect of monovalent oxygen vacancies on ferroelectric domains is responsible for the excellent ferroelectric polarization of KNNFC0.015 through the generation of an internal field to promote charge carriers separation and reduce nonradiative ***,the accompanying electron carriers can easily move to the material surface and participate in redox reactions because they have low activation ***,ferroelectric polarization and defects play synergetic roles in enhancing piezocatalytic performance.

关键词： piezocatalytic water purification ferroelectric polarization beneficial defects

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A General Synthetic Approach of Organic Lateral Heterostructures for Optical Signal Converters in All-Color Wavelength

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CCS Chemistry 2023年第2期5卷 423-433页

作者： Qiang Lv Xue-Dong Wang Wan-Ying Yang Kai-Li Wang Chao-Fei Xu Min Zheng Liang-Sheng Liao national engineering laboratory for modern silk College of Textile and Clothing EngineeringResearch Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/NanofabricationSoochow UniversitySuzhouJiangsu 215123 Institute of Functional nano&Soft Materials(FUNSOM) Soochow UniversitySuzhouJiangsu 215123 Jiangsu General science&technology Co. Ltd.Suzhou Industrial ParkSuzhouJiangsu 215123 Macao Institute of Materials science and engineering Macao University of Science and TechnologyTaipa 999078Macao SAR

Organic heterostructures with precisely defined compositions,architectures,and interfaces are considered promising building blocks for integrated optoelectronic ***,it remains a great challenge to rationally design and synthesize a heterostructure with tunable performance for promising applications such as optoelectronic ***,we report a universal strategy for the synthesis of organic lateral heterostructures(OLHs)with tunable function and optical *** fabricated cocrystals based on the tunable intermolecular distance(dπ–πfrom 3.33 to 3.48Å)ofBenzo[ghi]perylene(BGP)-based driven by arene-perfluoroarene interaction or charge transfer interaction;these different components were selectively constructed into organic solid solution microwires or ***,the solid solution microwires obtained could be epitaxially grown on the BGP-tetrabromophthalicanhydride trunk microwire to construct a series of OLHs microwires,which led to the successful demonstration of both photonic signal conversion and optical logic gate in all-color *** work gives a new insight into the fine synthesis of heterostructures with tunable structures/performances,providing predictable synthetic pathways to multifunctional organic heterostructures for the future realization of integrated optoelectronics.

关键词： organic heterostructure low-dimensional structure crystal epitaxial growth integrated photonics

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Epitaxy of Ⅲ-nitrides on two-dimensional materials and its applications

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Chinese Physics B 2022年第11期31卷 23-35页

作者：徐俞王建峰曹冰徐科 suzhou Institute of nano-Tech and nano-Bionics(SInano) Chinese Academy of Sciences(CAS)Suzhou 215123China Shenyang national laboratory for Materials science Shenyang 110010China School of Optoelectronic science and engineering&collaborative innovation center of suzhou nano science and technology Soochow UniversitySuzhou 215006China Key laboratory of Advanced Optical Manufacturing Technologies of Jiangsu Province&Key laboratory of modern Optical Technologies of Education Ministry of China Soochow UniversitySuzhou 215006China Jiangsu Institute of Advanced Semiconductors Ltd Suzhou 215123China

Ⅲ-nitride semiconductor materials have excellent optoelectronic properties,mechanical properties,and chemical stability,which have important applications in the field of optoelectronics and ***-dimensional(2D)materials have been widely focused in recent years due to their peculiar *** the property of weak bonding between layers of 2D materials,the growth ofⅢ-nitrides on 2D materials has been proposed to solve the mismatch problem caused by heterogeneous epitaxy and to develop substrate stripping techniques to obtain high-quality,low-cost nitride materials for high-quality nitride devices and their extension in the field of flexible *** this progress report,the main methods for the preparation of 2D materials,and the recent progress and applications of different techniques for the growth ofⅢ-nitrides based on 2D materials are reviewed.

关键词： nitrides two-dimensional materials van der Waals forces

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Hierarchical charge distribution controls self-assembly process of silk in vitro

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Frontiers of Materials science 2015年第4期9卷 382-391页

作者： YiZHANG Cencen ZHANG Lijie LIU David L. KAPLAN Hesun ZHU Qiang LU national engineering laboratory for modern silk & collaborative innovation center of suzhou nano science and technology Soochow University Suzhou 215123 China College of Textile and Clothing engineering Soochow University Suzhou 215123 China Department of Biomedical engineering Tufts University Medford MA 02155 USA Textile College Henan Institute of Engineering Zhengzhou 450007 China Research center of Materials science Beijing Institute of Technology Beijing 100081 China

silk materials with different nanostructures have been developed without the understanding of the inherent transformation mechanism. Here we attempt to reveal the conversion road of the various nanostructures and determine the critical regulating factors. The regulating conversion processes influenced by a hierarchical charge distribution were investigated, showing different transformations between molecules, nanoparticles and nanofibers. Various repulsion and compressive forces existed among silk fibroin molecules and aggregates due to the exterior and interior distribution of charge, which further controlled their aggregating and deaggregating behaviors and finally formed nanofibers with different sizes. Synergistic action derived from molecular mobility and concentrations could also tune the assembly process and final nanostructures, it is suggested that the complicated silk fibroin assembly processes comply a same rule based on charge distribution, offering a promising way to develop silk-based materials with designed nanostructures.

关键词： silk self-assembly charge nanostructure nanofiber

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Angular filtering by volume Bragg grating in photothermorefractive glass for nanosecond laser pulse

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Chinese Optics Letters 2019年第4期17卷 15-18页

作者：熊宝星高帆张翔袁孝 School of Optoelectronic science and engineering Soochow University Jiangsu Provincial Key laboratory of Advanced Optical Manufacturing Technologies and Key laboratory of modern Optical Technologies of the Ministry of Education collaborative innovation center of suzhou nano science and technology Soochow University

The two-dimensional angular filter based on volume Bragg gratings in photothermorefractive glass for a nanosecond(ns) laser pulse is demonstrated. The experimental results show that the near-field beam quality of the laser pulse was effectively improved. The near-field modulation and contrast ratio were improved by 1.75 and4.48 times, respectively. The power spectral density curves showed that the spatial frequencies more than0.9 mm^(-1)in the x direction and 1.2 mm^(-1)in the y direction were effectively suppressed.

关键词： two-dimensional angular Bragg gratings effectively suppressed

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通过共晶工程的选择性外延生长有机异质结构实现光信号定向转换

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science China Materials 2023年第10期66卷 3968-3976页

作者：吕强王雪东余悦俞燕君郑敏廖良生 Institute of Functional nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China national engineering laboratory for modern silk College of Textile and Clothing EngineeringResearch Center of Cooperative Innovation for Functional Organic/Polymer Material Micro/NanofabricationSoochow UniversitySuzhou 215123China Macao Institute of Materials science and engineering Macao University of Science and TechnologyTaipa 999078Macao SARChina

分层有机纳米结构(HONs)是一种将具有不同功能的多个成分集成在一个系统中的纳米结构,其在光电子应用中引起了极大的关注.然而,由于不同材料之间结构不相容性的难题,构建具有超低晶格失配率(η)的HONs仍然面临巨大挑战.共晶工程提供了... 详细信息

分层有机纳米结构(HONs)是一种将具有不同功能的多个成分集成在一个系统中的纳米结构,其在光电子应用中引起了极大的关注.然而,由于不同材料之间结构不相容性的难题,构建具有超低晶格失配率(η)的HONs仍然面临巨大挑战.共晶工程提供了探索合理制备HONs的有力手段,但迄今为止尚未得到系统的证明.在这里,我们展示了一种用于HONs的超低晶格失配异质外延的共晶工程策略.该策略具备足够的通用性,可实现多种材料的集成从而得到不同空间取向的异质结构.通过实验合成了一系列典型HONs,包括三嵌段(η_(1)=0.7%)、分支(η_(2)=0.8%)和核/壳(η_(3)=0.6%)纳米结构,其晶格失配率远低于先前报道的HONs(5%-10%).此外,我们选择性地合成了核/壳的子结构,包括三嵌段和三明治状纳米线,揭示了界面能在HONs形成过程中的诱导作用.作为概念验证,制备所得的不同异质结构成功实现了光子信号的定向转换,为构建下一代集成光电器件奠定了坚实的基础.

关键词： organic heterostructures epitaxy lattice mismatch cocrystal integrated photonics

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