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Chinese Journal of Chemical Engineering 2023年第11期63卷 140-147页

作者： Chongfu Wu Changsheng Chen Zhaoyang Qi Jie Chen Qinglian Wang Changshen Ye Ting Qiu College of Chemical Engineering Fuzhou UniversityFuzhou 350108China qingyuan innovation laboratory Quanzhou 362801China Engineering Research Center of Reactive Distillation Fujian Province Higher Education InstitutesFuzhou 350108China

The ultra-deep desulfurization of oil needs to be solved urgently due to various problems,including environmental pollution and environmental protection *** desulfurization(ODS)was considered to be the most promising *** facile synthesis of highly efficient and stable HPW-based heterogeneous catalysts for oxidative desulfurization is still a challenging *** this paper,pentamethylene hexamine(PEHA)and phosphotungstic acid(HPW)were combined by a simple one-step method to prepare a heterogeneous catalyst of PEHA-HPW for the production of ultra-deep desulfurization fuel *** composite material exhibited excellent catalytic activity and high recyclability,which could reach a 100% dibenzothiophene(DBT)removal rate in 30 min and be recycled at least 5 *** and DFT simulations were used to better examine the ODS mechanism of *** was proved that the rich amino groups on the surface of PEHA-HPW play a crucial *** work provides a simple and feasible way for the manufacture of efficient HPW-based catalysts.

关键词： Oxidation Catalyst Desulfurization Fuel Phosphotungstic acid Amino

Triggering in-plane defect cluster on MoS_(2) for accelerated dinitrogen electroreduction to ammonia

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Journal of Energy Chemistry 2021年第11期30卷 359-366,I0008页

作者： Wanru Liao Ke Xie Lijuan Liu Xiuyun Wang Yu Luo Shijing Liang Fujian Liu Lilong Jiang National Engineering Research Center of Chemical Fertilizer Catalyst Fuzhou UniversityFuzhou 350002FujianChina qingyuan innovation laboratory Quanzhou 362801FujianChina College of Chemistry Fuzhou UniversityFuzhou 350108FujianChina

Electrochemical nitrogen reduction reaction (eNRR) is an alternative promising manner for sustainable N2 fixation with low-emission. The major challenge for developing an efficient electrocatalyst is the cleaving of the stable Ntriple bondN triple bonds. Herein, we design a new MoS_(2) with in-plane defect cluster through a bottom-up approach for the first time, where the defect cluster is composed of three adjacent S vacancies. The well-defined in-plane defect clusters could contribute to the strong chemical adsorption and activation towards inert nitrogen, achieving an excellent eNRR performance with an ammonia yield rate of 43.4 ± 3 μg h^(−1) mgcat.^(−1) and a Faradaic efficiency of 16.8 ± 2% at −0.3 V (vs. RHE). The performance is much higher than that of MoS_(2) with the edge defect. Isotopic labeling confirms that N atoms of produced NH4+ originate from N2. Furthermore, the in-plane defect clusters realized the alternate hydrogenation of nitrogen in a side-on way to synthesize ammonia. This work provides a prospecting strategy for fine-tuning in-plane defects in a catalyst, and also promotes the progress of eNRR.

关键词： In-plane defect clusters Ammonia synthesis MoS_(2) Electrocatalysis Isotopic labeling

Reversible Chain Transfer Catalyzed Polymerization with Alkyl Iodides Generated from Alkyl Bromides by in Situ Halogen Exchange

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Chinese Journal of Polymer Science 2021年第9期39卷 1161-1168页

作者： Dan-Ni Gao Yu-Lai Zhao Jing-Yu Cai Lin-Xi Hou Long-Qiang Xiao Department of Materials-Oriented Chemical Engineering School of Chemical EngineeringFuzhou UniversityFuzhou 350116China qingyuan innovation laboratory Quanzhou 362801China Fujian Key laboratory of Advanced Manufacturing Technology of Specialty Chemicals Fuzhou UniversityFuzhou 350116China

Reversible chain transfer catalyzed polymerization(RTCP)is a practical and efficient process for the precise synthesis of polymers with special architecture by using simple phenols(2,4,6-trimethylphenol,TMP)or hydrocarbons(xanthene,XT)as efficient ***,alkyl iodide(R-1),which was gen erated from in situ bromine-iodine transformation of alkyl bromide(R-Br)with sodium iodide(Nal),was served as initiator to mediate RTCP with TMP or *** and other functional methacrylates,including GMA,DEAM,DMAEMA and BzMA,were successfully initiated by combining orga no catalysts and azo in itiators to yield polymers with low-polydispersity(M_(w)/M_(n)=1.1-1.5)and ideal mono mer conversions(50%-90%)at moderate *** over,3-armstar polymers were also obtained by this *** high chain-end fidelity of the obtained poly(methyl methacrylate)with iodine as chain-end group(PMMA-I)was confirmed by chain-extension *** en vironme ntally frie ndly initiators and orga no catalysts exhibit powerful polymerization properties toward RTCP,providing a sign ificant method to synthesize functional polymers.

关键词： Reversible chain transfer catalyzed polymerization Organocatalyst Halogen exchange

Bimetallic PtSn nanoparticles confined in hierarchical ZSM-5 for propane dehydrogenation

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Chinese Journal of Chemical Engineering 2022年第1期35卷 384-391页

作者： Tianlei Wang Zhikang Xu Yuanyuan Yue Tinghai Wang Minggui Lin Haibo Zhu National Engineering Research Center of Chemical Fertilizer Catalyst School of Chemical EngineeringFuzhou UniversityFuzhou 350002China qingyuan innovation laboratory Quanzhou 362801China State Key laboratory of Coal Conversion Institute of Coal ChemistryChinese Academy of SciencesTaiyuan 030001China

A series of PtSn/hierarchical ZSM-5 catalysts were developed for propane dehydrogenation,in which the PtSn bimetallic particles are confined in the mesopores of hierarchical ZSM-5 *** synthesis of PtSn/hierarchical ZSM-5 catalysts was achieved via the loading of Pt and Sn species onto the hierarchical ZSM-5 catalysts that are obtained through a desilication of conventional *** PtSn/hierarchical ZSM-5 catalysts were fully characterized by XRD,N_(2) adsorption,STEM,XPS,and CO-IR techniques,which reveals that highly dispersed PtSn bimetallic nanoparticles are enclosed into mesopores of hierarchical *** catalytic performance of PtSn/hierarchical ZSM-5 is greatly affected by the concentrations of alkali solution in the desilication process and Sn/Pt ratios in PtSn bimetallic *** PtSn1.00/ZSM-5(0.8)catalyst shows the highest efficiency in propane dehydrogenation,which gives an initial conversion of 46%and selectivity of 98%at 570℃.The high efficiency in these PtSn/hierarchical ZSM-5 catalysts for propane dehydrogenation is mainly ascribed to the confinement of PtSn particles in the mesopores of hierarchical ZSM-5 zeolite.

关键词： Hierarchical ZSM-5 Propane dehydrogenation Desilication PtSn particles

In sight of K-deficient layered K_(x)MnO_(2) cathode for potassium-ions batteries

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Journal of Energy Chemistry 2022年第1期31卷 335-343,I0009页

作者： Tiezhong Liu Shuang Hou Youpeng Li Shoufeng Xue Junhua Hu Haikuo Fu Chenghao Yang Lingzhi Zhao Guangdong Provincial Engineering Technology Research Center for Low Carbon and Advanced Energy Materials Institute of Semiconductor Science and TechnologySouth China Normal UniversityGuangzhou 510631GuangdongChina Guangzhou Key laboratory for Surface Chemistry of Energy Materials New Energy Research InstituteSchool of Environment and EnergySouth China University of Technology Guangzhou 510631GuangdongChina Institute of Science and Technology innovation South China Normal UniversityQingyuan 511517GuangdongChina SCNU qingyuan Institute of Science and Technology In novation Co. Ltd.Qingyuan 511517GuangdongChina School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001HenanChina(Qingyuan Jiazhi New Materials Research Institute Co.Ltd.Qingyuan 511517GuangdongChina

Potassium-ions batteries(PIBs)are attracting increasing attention as up-and-coming youngster in largescale grid-level energy storage benefiting from its low-cost and high energy ***,enough researches regarding indispensable cathode materials for PIBs are badly ***,we synthesize K-deficient layered manganese-based oxides(P2-K_(0.21)MnO_(2) and P3-K_(0.23)MnO_(2))and investigate them as cathode of PIBs for the first *** the newcomer of potassium-containing layered manganese-based oxides(K_(x)MnO_(2))group,P2-K_(0.21)MnO_(2) delivers high discharge capacity of 99.3 mAh g^(-1) and P3-K_(0.23)MnO_(2) exhibits remarkable capacity retention rate of 75.5%.Besides,in-situ XRD and ex-situ XRD measurements reveal the reversible phase transition of P2-K_(0.21)MnO_(2) and P3-K_(0.23)MnO_(2) with the potassium-ions extraction and reinsertion,*** work contributes to a better understanding for the potassium storage in K-deficient layered K_(x)MnO_(2)(x≤0.23),possessing an important basic scientific significance for the exploitation and application of layered K_(x)MnO_(2) in PIBs.

关键词： Potassium-ions battery Cathode Layered K_(x)MnO_(2) P2/P3-type structure Low potassium content

锌离子传导聚合物缓冲层:抑制锌离子水电池锌负极寄生反应

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Science China Materials 2023年第12期66卷 4605-4614页

作者：陈丹灵王辉波任丽朱梦宇白正帅李春新施灿盛王汇才汤育欣张焱焱 College of Chemical Engineering Fuzhou UniversityFuzhou 350116China qingyuan innovation laboratory Quanzhou 362801China

由于锌金属在电解液中热力学不稳定而自发地发生寄生反应(析氢、枝晶生长等),水系锌离子电池的商业化应用受到了阻碍.因此,我们构建了一种高粘附性的锌离子传导聚合物聚乙烯醇缩甲醛(PVF)缓冲层,来抑制这些寄生反应的发生,从而提高锌沉... 详细信息

由于锌金属在电解液中热力学不稳定而自发地发生寄生反应(析氢、枝晶生长等),水系锌离子电池的商业化应用受到了阻碍.因此,我们构建了一种高粘附性的锌离子传导聚合物聚乙烯醇缩甲醛(PVF)缓冲层,来抑制这些寄生反应的发生,从而提高锌沉积的可逆性.这种致密的人工缓冲层不仅能有效隔绝电解质与锌负极之间的直接接触,还能适应锌沉积/剥离过程中的体积膨胀,并引导锌成核过程.具体来说,PVF层可提高成核过电位,并促进Zn2+的三维扩散过程,使PVF层下的Zn2+沉积通量均匀化.我们设计的PVF@Zn具有高循环稳定性和不易生成枝晶的特点,基于该电极的对称电池的长循环寿命超过5200 h,比Zn负极电池提高了近35倍,甚至可以在40.0 mA cm^(−2)的超高电流密度下稳定运行.此外,PVF@Zn||NVO全电池在1.0 A g^(−1)的条件下进行2400个循环后,仍能保持172.4 mA h g^(−1)的比容量.这种通过消除自发寄生反应并调节锌均匀沉积及成核的策略,为设计实用化高性能锌负极提供了重要借鉴.

关键词： buffer polymer layer polyvinyl formal spontaneous parasitic reactions Zn dendrite hydrogen evolution nucleation overpotential

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

Multi-region calcium imaging in freely behaving mice with ultra-compact head-mounted fluorescence microscopes

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National Science Review 2024年第1期11卷 161-173页

作者： Feng Xue Fei Li Ke-ming Zhang Lufeng Ding Yang Wang Xingtao Zhao Fang Xu Danke Zhang Mingzhai Sun Pak-Ming Lau qingyuan Zhu Pengcheng Zhou Guo-Qiang Bi Department of Precision Machinery and Precision Instruments University of Science and Technology of China Hefei National laboratory for Physical Sciences at the Microscale University of Science and Technology of China Interdisciplinary Center for Brain Information the Brain Cognition and Brain Disease Institute Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Faculty of Life and Health Sciences Shenzhen Institutes of Advanced Technology Chinese Academy of Sciences School of Life Sciences University of Science and Technology of China Institute of Semiconductors Chinese Academy of Sciences Department of Modern Life Sciences and Biotecnology Xiongan Institute of Innovation Xiongan New Area Shenzhen-Hong Kong Institute of Brain Science-Shenzhen Fundamental Research Institutions Suzhou Institute for Advanced Research University of Science and Technology of China Institute of Artiflcial Intelligence Hefei Comprehensive National Science Center

To investigate the circuit-level neural mechanisms of behavior, simultaneous imaging of neuronal activity in multiple cortical and subcortical regions is highly desired. Miniature head-mounted microscopes offer the capability of calcium imaging in freely behaving animals. However, implanting multiple microscopes on a mouse brain remains challenging due to space constraints and the cumbersome weight of the ***, we present TINIscope, a Tightly Integrated Neuronal Imaging microscope optimized for electronic and opto-mechanical design. With its compact and lightweight design of 0.43 g, TINIscope enables unprecedented simultaneous imaging of behavior-relevant activity in up to four brain regions in ***-of-concept experiments with TINIscope recorded over 1000 neurons in four hippocampal subregions and revealed concurrent activity patterns spanning across these regions. Moreover, we explored potential multi-modal experimental designs by integrating additional modules for optogenetics, electrical stimulation or local field potential recordings. Overall, TINIscope represents a timely and indispensable tool for studying the brain-wide interregional coordination that underlies unrestrained behaviors.

关键词： miniature microscope multiple sites calcium imaging multimodal integration hippocampus

Styrene epoxidation catalyzed by polyoxometalate/quaternary ammonium phase transfer catalysts: The effect of cation size and catalyst deactivation mechanism

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Chinese Journal of Chemical Engineering 2023年第3期55卷 192-201页

作者： Qiongna Xiao Yuyan Jiang Weiqiang Yuan Jingjing Chen Haohong Li Huidong Zheng College of Chemical Engineering Fuzhou UniversityFuzhou 350116China qingyuan innovation laboratory Quanzhou 362801China Engineering Research Center of Advanced Manufacturing Technology for Fine Chemicals Fujian Province UniversityFuzhou UniversityFuzhou 350116China College of Chemistry Fuzhou UniversityFuzhou 350116China

Catalytic epoxidation of alkenes is an important type of organic reaction in chemical industry,and the deep insight into catalyst deactivation will help to develop new epoxidation *** this work,series of quaternary ammoniums bearing different cationic sizes,***+(methyltrioctylammonium,[(C_(8)H_(17))_(3)CH_(3)N]+),HTMA+(hexadecyltrimethylammonium,[(C_(16)H_(33))(CH_(3))_(3)N]+) and DMDOA+(dimethyldioctadecylammonium,[(C_(18)H_(37))_(2)(CH_(3))_(2)N]+) were incorporated with polyoxometalate (POM) anions to prepare phase transfer catalysts (PTCs),which were used in the styrene *** them,(MTOA)_(3)PW_(4)O_(24)exhibits the best catalytic performance judged from the highest styrene conversion rate(52%) and styrene oxide selectivity (93%),during which the styrene epoxidation conditions were ***,the deactivation mechanism of this kind of PTCs was proposed firstly,*** the case of low H_(2)O_(2) content,the oxidant can only be used in the styrene epoxidation,in which the catalyst can transform into stable Keggin-type *** when the content of H_(2)O_(2) is higher,the excess H_(2)O_(2) can reactivate the Keggin-type POM into active (PW_(4)O_(24))_(3)-anions,which can trigger the ring-opening polymerization of styrene ***,the catalyst is deactivated by adhered poly(styrene oxide)irreversibly,which was determined by NMR *** this situation,the active moiety{PO_(4)[WO(O_(2))_(2)]_(4)}_(3)-in phase-transfer catalytic system can break into some unidentified species with low W/P ratio with the presence of *** work will be beneficial for the design of new PTCs in alkene epoxidation in fine chemical industry.

关键词： Phosphotungstic acid phase-transfer catalyst Styrene epoxidation Catalyst deactivation mechanism Cation size effect

Advances in particulate matter filtration:Materials,performance,and application

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Green Energy & Environment 2023年第3期8卷 673-697页

作者： Xuzheng Ji Jianying Huang Lin Teng Shuhui Li Xiao Li Weilong Cai Zhong Chen Yuekun Lai College of Chemical Engineering Fuzhou UniversityFuzhou350116China b qingyuan innovation laboratory Quanzhou362801China Department of Chemistry University College LondonLondonWC1H 0AJUK School of Materials Science and Engineering Nanyang Technological University50 Nanyang AvenueSingapore

Air-borne pollutants in particulate matter(PM)form,produced either physically during industrial processes or certain biological routes,have posed a great threat to human *** during the current COVID-19 pandemic,effective filtration of the virus is an urgent matter *** this review,we first introduce some fundamentals about PM,including its source and classification,filtration mechanisms,and evaluation *** filtration materials and their functions are then summarized,among which polymers and MOFs are discussed in detail together with their antibacterial *** discussion on the application is divided into end-of-pipe treatment and source ***,we conclude this review with our prospective view on future research in this area.

关键词： Air filtration PM capture End-of-pipe treatment Source control COVID-19