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Hydrodechlorination of trifluoro-trichloroethane to chlorotrifluoroethylene:Revealing the deactivation mechanism and regeneration strategy of Pd-Cu/AC catalyst

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Chinese Journal of Chemical Engineering 2024年第6期70卷 261-268页

作者： Song Tian Yicheng Chen Xiaoyu Wen Bingcheng li Jian Lu zile li Feng Feng Qingtao Wang Qunfeng Zhang Xiaonian li State Key Laboratory Breeding Base of Green Chemistry Synthesis Technology Institute of Industrial Catalysis of Zhejiang University of TechnologyHangzhou 310014China State Key Laboratory of Fluorine&Nitrogen Chemicals Xi'an Modern Chemistry Research InstituteXi'an 710065China

Chlorotrifluoroethylene(CTFE)is a vital fluorinated olefinic monomer produced through the catalytic hydrodechlorination of trichlorotrifluoroethane(CFC-113),an eco-friendly ***,hydrodechlorination catalysts for olefin production often suffer from poor *** Pd/AC catalyst and Pd-Cu/AC catalyst prepared by co-impregnation method exhibited poor stability,Pd-Cu/AC catalyst with CFC-113 conversion dropping to around 37%after 50 h of hydrodechlorination ***-Emmett-Teller,transmission electron microscopy,X-ray photoelectron spectroscopy,and X-ray diffraction of fresh and deactivated Pd/AC catalysts indicate that the deactivation of Pd/AC catalysts is due to high-temperature agglomeration of *** analysis of fresh and deactivated Pd-Cu/AC catalysts using Brunauer-Emmett-Teller,transmission electron microscopy,and thermogravimetric analysis techniques revealed decreased dispersion of active sites,reduced surface area,catalyst aggregation deactivation,and a significant decrease in Cu ***,the results of NH3-TPD revealed that the acid sites of the catalyst increased significantly.X-ray diffraction spectra indicated the formation of new species,basic copper chloride(Cu_(2)(OH)_(3)Cl),during the *** the reaction progressed,these new species agglomerated,leading to a gradual loss of catalyst ***,the deactivated catalyst was successfully reactivated using a simple alkaline washing method.

关键词： CFC-113 Hydrodechlorination Chlorotrifluoroethylene Catalyst deactivation

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Metasurface-based nanoprinting: principle, design and advances

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Opto-Electronic Science 2022年第10期1卷 1-41页

作者： Rao Fu Kuixian Chen zile li Shaohua Yu Guoxing Zheng School of Electronic Information and School of Microelectronics Wuhan UniversityWuhan 430072China Peng Cheng Laboratory Shenzhen 518055China Wuhan Institute of Quantum Technology Wuhan 430206China Hubei Luojia Laboratory Wuhan 430079China

Metasurface-based nanoprinting(meta-nanoprinting)has fully demonstrated its advantages in ultrahigh-density gray-scale/color image recording and display.A typical meta-nanoprinting device usually has image resolutions reaching 80 k dots per inch(dpi),far exceeding conventional technology such as gravure printing(typ.5 k dpi).Besides,by fully exploit-ing the design degrees of freedom of nanostructured metasurfaces,meta-nanoprinting has been developed from previ-ous single-channel to multiple-channels,to current multifunctional integration or even dynamic *** this review,we overview the development of meta-nanoprinting,including the physics of nanoprinting to manipulate optical amplitude and spectrum,single-functional meta-nanoprinting,multichannel meta-nanoprinting,dynamic meta-nanoprinting and mul-tifunctional metasurface integrating nanoprinting with holography or metalens,*** of meta-nanoprinting such as image display,vortex beam generation,information decoding and hiding,information encryption,high-density optical storage and optical anti-counterfeiting have also been ***,we conclude the opportunities and chal-lenges/perspectives in this rapidly developing research field of meta-nanoprinting.

关键词： metasurface nanoprinting structural-color hologram multifunctional device

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Zero-order-free meta-holograms in a broadband visible range

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Photonics Research 2020年第5期8卷 723-728页

作者： RAO FU liANGUI DENG ZHIQIANG GUAN SHENG CHANG JIN TAO zile li GUOXING ZHENG Electronic Information School Wuhan UniversityWuhan 430072China NOEIC State Key Laboratory of Optical Communication Technologies and NetworksWuhan Research Institute of Posts and TelecommunicationsWuhan 430074China School of Physics and Technology Center for Nanoscience and Nanotechnologyand Key Laboratory of Artificial Micro-and Nano-structures of Ministry of EducationWuhan UniversityWuhan 430072China

The unwanted zero-order light accompanied by the birth of diffractive optical elements and caused mainly by fabrication errors and wavelength variations is a key factor that deteriorates the performance of diffraction-related optical devices such as holograms,gratings,beam shapers,beam splitters,optical diffusers,and diffractive ***,inspired by the unique characteristic of nano-polarizer-based metasurfaces for both positive and negative amplitude modulation of incident light,we propose a general design paradigm to eliminate zero-order diffraction without burdening the metasurface design and *** experimentally demonstrated metahologram,which projects a holographic image with a wide angle of 70°×70°in the for field,presents a very low zero-order intensity(only 0.7%of the total energy of the reconstructed image).More importantly,the zero-orderfree meta-hologram has a large tolerance limit for wavelength variations(under a broadband illumination from520 to 660 nm),which brings important technical *** strategy proposed could significantly relieve the fabrication difficulty of metasurfaces and be viable for various diffractive-optics-related applications includingholography,laser beam shaping,optical data storage,vortex beam generation,and so on.

关键词： visible illumination holographic

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Perovskite single-pixel detector for dual-color metasurface imaging recognition in complex environment

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light(Science & Applications) 2023年第12期12卷 2723-2731页

作者： Jiahao Xiong Zhi-Hong Zhang zile li Peixia Zheng Jiaxin li Xuan Zhang Zihan Gao Zhipeng Wei Guoxing Zheng Shuang-Peng Wang Hong-Chao liu Institute of Applied Physics and Materials Engineering University of MacaoTaipaMacao SARChina State Key Laboratory of High Power Semiconductor Lasers Changchun University of Science and TechnologyChangchunChina Electronic Information School and School of MicroelectronicsWuhan UniversityWuhanChina Peng Cheng Laboratory ShenzhenChina

Highly efficient multi-dimensional data storage and extraction are two primary ends for the design and fabrication of emerging optical *** metasurfaces show great potential in information storage due to their modulation for different degrees of freedom of light,a compact and efficient detector for relevant multi-dimensional data retrieval is still a challenge,especially in complex ***,we demonstrate a multi-dimensional image storage and retrieval process by using a dual-color metasurface and a double-layer integrated perovskite single-pixel detector(DIP-SPD).Benefitting from the photoelectric response characteristics of the FAPbBr2.4l0.6 and FAPbl3 films and their stacked structure,our filter-free DIP-SPD can accurately reconstruct different colorful images stored in a metasurface within a single-round measurement,even in complex environments with scattering media or strong background *** work not only provides a compact,filter-free,and noise-robust detector for colorful image extraction in a metasurface,but also paves the way for color imaging application of perovskite-like bandgap tunable materials.

关键词： materials perovskite complex

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论集体建设用地二级市场的法律构造

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广西大学学报（哲学社会科学版） 2022年第5期44卷 144-158页

作者：高圣平李子乐中国人民大学民商事法律科学研究中心中国人民大学法学院

集体建设用地二级市场是推进土地要素市场化配置的重要一环。《土地管理法》《土地管理法实施条例》虽然赋予了集体经营性建设用地与国有建设用地同等权能,但对集体建设用地二级市场的交易规则却未作规定,只是借助“参照同类用途的国有... 详细信息

集体建设用地二级市场是推进土地要素市场化配置的重要一环。《土地管理法》《土地管理法实施条例》虽然赋予了集体经营性建设用地与国有建设用地同等权能,但对集体建设用地二级市场的交易规则却未作规定,只是借助“参照同类用途的国有建设用地执行”一笔带过,增加了法律适用上的困难。集体建设用地二级市场的入市范围包括集体经营性建设用地使用权,至于其设立方式则在所不问,并不仅限于出让方式,以出租、入股方式取得的集体经营性建设用地使用权亦可进入二级市场。在解释上,符合入市条件的乡镇企业建设用地使用权亦属集体经营性建设用地使用权,可以直接进入二级市场。集体建设用地二级市场中的再流转方式既包括发生集体经营性建设用地使用权转移效果的转让、互换、出资、赠与,也包括产生创设新物权——抵押权效果的抵押,还包括仅产生债法效果的出租。这些再流转方式适用或者参照适用《民法典》《土地管理法》《城市房地产管理法》《不动产登记暂行条例》等的规定。

关键词：集体经营性建设用地集体建设用地使用权土地二级市场

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Malus-metasurface-assisted polarization multiplexing

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light(Science & Applications) 2020年第1期9卷 1038-1046页

作者： liangui Deng Juan Deng Zhiqiang Guan Jin Tao Yang Chen Yan Yang Daxiao Zhang Jibo Tang Zhongyang li zile li Shaohua Yu Guoxing Zheng Hongxing Xu Cheng-Wei Qiu Shuang Zhang Electronic Information School Wuhan University430072 WuhanChina NOEIC State Key Laboratory of Optical Communication Technologies and NetworksWuhan Research Institute of Posts&Telecommunications430074 WuhanChina School of Physics and Technology Wuhan University430072 WuhanChina Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore Integrated Circuit Advanced Process Center Institute of MicroelectronicsChinese Academy of Sciences100029 BeijingChina School of Physics&Astronomy University of BirminghamBirmingham B152TTUK

Polarization optics plays a pivotal role in diffractive,refractive,and emerging flat optics,and has been widely employed in contemporary optical industries and daily *** polarization manipulation leads to robust control of the polarization direction of ***,polarization control has been studied largely independent of the phase or intensity of ***,we propose and experimentally validate a Malus-metasurface-assisted paradigm to enable simultaneous and independent control of the intensity and phase properties of light simply by polarization *** orientation degeneracy of the classical Malus’s law implies a new degree of freedom and enables us to establish a one-to-many mapping strategy for designing anisotropic plasmonic nanostructures to engineer the Pancharatnam–Berry phase profile,while keeping the continuous intensity modulation *** proposed Malus metadevice can thus generate a near-field greyscale pattern,and project an independent far-field holographic image using an ultrathin and single-sized *** concept opens up distinct dimensions for conventional polarization optics,which allows one to merge the functionality of phase manipulation into an amplitudemanipulation-assisted optical component to form a multifunctional nano-optical device without increasing the complexity of the *** can empower advanced applications in information multiplexing and encryption,anti-counterfeiting,dual-channel display for virtual/augmented reality,and many other related fields.

关键词： optics enable unchanged

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Cascaded metasurface for separated information encryption[Invited]

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Chinese Optics Letters 2023年第2期21卷 9-13页

作者：汪嘉豪朱国栋张为国周舟李子乐郑国兴 Electronic Information School Wuhan UniversityWuhan 430072China Chongqing Institute of Green and Intelligent Technology Chinese Academy of SciencesChongqing 400714China Peng Cheng Laboratory Shenzhen 518055China Wuhan Institute of Quantum Technology Wuhan 430206China

For a conventional cascaded metasurface,the combination channel and each single channel are mutually dependent because the phase modulation of a cascaded metasurface is the sum of each single *** we propose a cascaded metasurface that can independently encode information into multiple *** on the orientation degeneracy of anisotropic metasurfaces,each single metasurface can produce a quick-response(QR)image in the near field,governed by the Malus law,while the combined channel can produce a holographic image in the far field,governed by geometric *** independent and physically separated trichannel design makes information encryption safer.

关键词： cascaded metasurfaces optical encryption holography nanoprinting

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电化学芳烃C(sp^(2))—H胺化反应的研究进展

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有机化学 2024年第3期44卷 871-891页

作者：朱子乐李鹏飞仇友爱南开大学化学学院元素有机化学国家重点实验室天津300071

苯胺及其衍生物在人类生活和工业生产中被广泛地使用,促使人们探索从相应的C(sp2)—H键直接构建芳香C(sp^(2))—N键的反应方法.近年来,有机电化学作为一种可控、可持续、环境友好和易于扩展规模的方法,受到越来越多的关注,同时也为芳烃... 详细信息

苯胺及其衍生物在人类生活和工业生产中被广泛地使用,促使人们探索从相应的C(sp2)—H键直接构建芳香C(sp^(2))—N键的反应方法.近年来,有机电化学作为一种可控、可持续、环境友好和易于扩展规模的方法,受到越来越多的关注,同时也为芳烃的胺化提供了新的反应模式.在此篇综述中,总结了电化学芳香族C(sp^(2))—H胺化反应中常见的机理途径,根据所涉及的胺源类型对反应实例进行了分类,并对该领域的前景和挑战提供了见解.

关键词：电化学胺化芳烃苯胺 C—H键胺化

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主动式液晶超表面研究进展

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应用光学 2022年第4期43卷 744-759页

作者：彭畅李子乐贺志学郑国兴武汉大学电子信息学院湖北武汉430072 鹏城实验室电路与系统部广东深圳518055

超表面具有亚波长尺度下精密高效的光波操控能力,但在其单独实现主动式调控方面,目前仍有诸多技术困难亟待克服。液晶与超表面的结合有望发挥各自的长处,实现一种分辨率高、衍射角大、超紧凑的新型主动式光调控器件。以液晶与超表面两... 详细信息

超表面具有亚波长尺度下精密高效的光波操控能力,但在其单独实现主动式调控方面,目前仍有诸多技术困难亟待克服。液晶与超表面的结合有望发挥各自的长处,实现一种分辨率高、衍射角大、超紧凑的新型主动式光调控器件。以液晶与超表面两部分功能设计的独立与否作为分类依据,回顾了近年来主动式液晶超表面的研究进展,具体包括液晶波片与偏振敏感超表面结合、液晶环境与共振型超表面结合、液晶与超表面光学性质互补等。最后对主动式液晶超表面所面临的挑战以及发展前景进行了讨论和展望。

关键词：主动式超表面液晶波前操控光谱调控动态显示

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Full-space Cloud of Random Points with a Scrambling Metasurface

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light(Science & Applications) 2018年第1期7卷 467-474页

作者： zile li Qi Dai Muhammad Q.Mehmood Guangwei Hu Boris Luk’yanchuk Jin Tao Chenglong Hao Inki Kim Heonyeong Jeong Guoxing Zheng Shaohua Yu Andrea Alù Junsuk Rho Cheng-Wei Qiu School of Electronic Information Wuhan UniversityWuhan 430072China NOEIC State Key Laboratory of Optical Communication Technologies and NetworksWuhan Research Institute of Posts and TelecommunicationsWuhan 430074China Department of Electrical Engineering Information Technology University of the PunjabFerozpur Road54000 LahorePakistan Department of Electrical and Computer Engineering National University of Singapore4 Engineering Drive 3Singapore 117583Singapore Advanced Science Research Center City University of New YorkNew York 10031USA Data Storage Institute A*STAR(Agency for ScienceTechnology and Research)2 Fusionopolis Way#08-01Innovis 138634Singapore Department of Mechanical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea Department of Chemical Engineering Pohang University of Science and Technology(POSTECH)Pohang 37673Republic of Korea National Institute of Nanomaterials Technology(NINT) Pohang 37673Republic of Korea

With the rapid progress in computer science,including artificial intelligence,big data and cloud computing,full-space spot generation can be pivotal to many practical applications,such as facial recognition,motion detection,augmented reality,*** opportunities may be achieved by using diffractive optical elements(DOEs)or light detection and ranging(liDAR).However,DOEs suffer from intrinsic limitations,such as demanding depth-controlled fabrication techniques,large thicknesses(more than the wavelength),Lambertian operation only in half space,*** nevertheless relies on complex and bulky scanning systems,which hinders the miniaturization of the spot ***,inspired by a Lambertian scatterer,we report a Hermitian-conjugate metasurface scrambling the incident light to a cloud of random points in full space with compressed information density,functioning in both transmission and reflection *** 4044 random spots are experimentally observed in the entire space,covering angles at nearly 90°.Our scrambling metasurface is made of amorphous silicon with a uniform subwavelength height,a nearly continuous phase coverage,a lightweight,flexible design,and low-heat ***,it may be mass produced by and integrated into existing semiconductor foundry *** work opens important directions for emerging 3D recognition sensors,such as motion sensing,facial recognition,and other applications.

关键词： conjugate directions amorphous

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