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Solution-processed all-inorganic lead halide perovskite/layered double hydroxides superlattices

science China Chemistry 2024年第9期67卷 2904-2910页

作者： Deyu Li Mingming Zhang Lulu Wei Shubing Tian Mingze Sun Kang Liu Jixiang Xu Lei Wang Jun Xing Key Laboratory of Eco-chemical Engineering Ministry of EducationCollege of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdao 266042China College of Sino-German Science and Technology Qingdao University of Science&TechnologyQingdao 266042China

Quantum wells and superlattices are key building blocks in the semiconductor industry,normally fabricated using epitaxial growth techniques,such as vapor phase epitaxy,metalorganic chemical vapor deposition and molecular beam ***,these complicated preparation processes,as well as their high cost,limit their extensive *** is essential to develop a simple solution process for building ***,we demonstrate an ion exchange strategy for synthesizing an allinorganic superlattice cesium lead bromide/layered double hydroxides(CsPbBr_3/LDH)in *** room temperature,the perovskite ions diffuse into the interlayer of LDH and assemble into layered perovskite with various *** with traditional organic-inorganic hybrid perovskite superlattice,the all-inorganic perovskite superlattice CsPbBr_(3)/LDH has weak quantum confinement,which exhibits narrow emission line-widths of 20 nm,high quantum yields of 55%,and radiative lifetimes of several *** findings offer a new route to synthesize novel perovskite superlattices and enrich the perovskite supercrystal platform for electronics,photonics and optoelectronics devices.

关键词： halide perovskite superlattice layered double hydroxides 2D

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High-performance single-component white light-emitting diodes based on donor-acceptor integrated carbon nitride

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science China Chemistry 2025年第3期68卷 1136-1143页

作者： Ning Wu Fangxu Dai Kunpeng Wang Yunhu Wang Xinyi Wang Kai Zhang Mingming Zhang Kang Liu Jixiang Xu Lei Wang Jun Xing Key Laboratory of Eco-chemical Engineering Ministry of EducationCollege of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdao 266042China School of Pharmacy Jining Medical UniversityRizhao 276800China College of Sino-German Science and Technology Qingdao University of Science&TechnologyQingdao 266042China

White light-emitting diodes(WLEDs)as energy-saving light sources are widely used to alleviate the rising electric *** commercial WLEDs are blue/yellow-mixed emitting devices,which have some disadvantages,such as physiological damages of rich blue light,complex device structure and color *** is essential to develop single-component WLEDs with quasi-solar spectrum to overcome these *** we demonstrate a high-performance single-component WLED based on donor-acceptor integrated carbon nitride(DACN)*** donor-acceptor simultaneously increases the photoluminescence efficiency and the carrier mobility of graphitic carbon nitride(g-CN),hence,the DACN-based WLED reaches a milestone in maximum luminance of 2,045 cdm^(-2)and maximum external quantum efficiency of 2.2%,which are one order of magnitude higher than pristine g-CN-based ***,the DACN-based WLED emits broadband white light with color coordinates of(0.34,0.44)and a color temperature of 5,163 *** works open a way to boost optoelectronic properties of g-CN materials and show their promising application in single-component WLEDs.

关键词： carbon nitride light-emitting diode donor-acceptor white light

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Electrochemical Cascade Annulation for the Synthesis of 3-Sulfanylquinoline Derivatives under Mild Conditions

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Chinese Journal of Chemistry 2024年第16期42卷 1833-1838页

作者： Ke Li Ming-Zhong Guo Zhuo Chen Hao-Ran Li Weisi Guo Ming Li Lin-Bao Zhang State Key Laboratory Base of Eco-Chemical Engineering College of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdaoShandong 266042China

An efficient electrochemical approach has been developed for the construction of 3-sulfanylquinoline derivatives by treating phenylethynylbenzoxazinanones with disulfides in an undivided *** protocol provided a convenient route to functionalized quinolines with good functional group ***,it does not require any metal catalysts or additives,furnishing a series of biologicalquinolines inmoderatetogoodyields.

关键词： Electrocatalysis Electrooxidation Annulation 3-Sulfany quinoline C3-thioetherification

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Asymmetric Janus Fibers with Bistable Thermochromic and Efficient Solar-Thermal Properties for Personal Thermal Management

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Advanced Fiber Materials 2024年第1期6卷 264-277页

作者： Chengcheng Wang Jilei Shi Liping Zhang Shaohai Fu Key Laboratory of Science&Technology of Eco‑Textile Jiangnan UniversityMinistry of EducationWuxi 214122JiangsuChina

The compelling combination of thermochromism and multifunctional wearable heaters in smart textiles has received increas-ing attention given the significant synergistic effect of green solar heat supply and energy ***,due to color incompatibility and poor knittability,developing fabrics with bistable thermochromic properties to achieve efficient solar-thermal management remains a challenging ***,by combining bistable thermochromic,photochromic,and efficient solar-thermal properties,we constructed an asymmetric Janus(Janus A/B)fiber(BTCSJF)that can simultaneously display two colors and help with energy reserve while harvesting solar *** greatly from donor-acceptor elec-tron transfer,dynamic hydrogen bonding,and supercooling properties,BTCSJF displays a quick switch in color,excellent bistability,and enhanced performance in storing phase-change *** addition,BTCSJF can be self-heated by 35.6℃higher than conventional fibers because it can capture and store solar *** research outlines a method to fabricate braided fibers with two theoretically incompatible properties that have promising implications for self-powered integrated bistable color-changing and personal thermal management applications.

关键词： Janus fiber Bistable thermochromic Solar energy Personal thermal management Synergistic effect

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Fibrous MXene Aerogels with Tunable Pore of Contaminated Seawater

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Nano-Micro Letters 2023年第5期15卷 298-312页

作者： Fan Wu Siyu Qiang Xiao-Dong Zhu Wenling Jiao Lifang Liu Jianyong Yu Yi-Tao Liu Bin Ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 201620People’s Republic of China State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042People’s Republic of China

The seawater desalination based on solardriven interfacial evaporation has emerged as a promising technique to alleviate the global crisis on freshwater ***,achieving high desalination performance on actual,oil-contaminated seawater remains a critical challenge,because the transport channels and evaporation interfaces of the current solar evaporators are easily blocked by the oil slicks,resulting in undermined evaporation rate and conversion ***,we propose a facile strategy for fabricating a modularized solar evaporator based on flexible MXene aerogels with arbitrarily tunable,highly ordered cellular/lamellar pore structures for high-efficiency oil interception and *** core design is the creation of 1D fibrous MXenes with sufficiently large aspect ratios,whose superior flexibility and plentiful link forms lay the basis for controllable 3D assembly into more complicated pore *** cellular pore structure is responsible for effective contaminants rejection due to the multi-sieving effect achieved by the omnipresent,isotropic wall apertures together with underwater superhydrophobicity,while the lamellar pore structure is favorable for rapid evaporation due to the presence of continuous,large-area evaporation *** modularized solar evaporator delivers the best evaporation rate(1.48 kg m-2h-1)and conversion efficiency(92.08%)among all MXene-based desalination materials on oil-contaminated seawater.

关键词： Fibrous MXene aerogels Tunable pore structures Modularized solar evaporator Photothermal desalination

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Tough Hydrogen Bonding Crosslinked Poly(3-fluorothiophene)Network via Electrosynthesis for High-performance Electrochromic Supercapacitors

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Chinese Journal of Polymer science 2024年第11期42卷 1749-1757,I0011页

作者： Chun-Hui Du Yu-Hua Xu Hui Li Zhi-Xin Wu Han-Jun Yang Xi-Mei Liu Bao-Yang Lu Guang-Ming Nie Ge Zhang Jiangxi Key Lab of Flexible Electronics Flexible Electronics Innovation InstituteJiangxi Science&Technology Normal UniversityNanchang330013China Key Laboratory of Optic-Electric Sensing and Analytical Chemistry for Life Science MOEState Key Laboratory Base of Eco-chemical EngineeringCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao266042China

As a type of bi-functional device,electrochromic supercapacitors(EC-SCs)have attracted extensive attention in diverse applications such as flexible ***,despite recent encouraging progress,rational design and development of high-performance EC-SC materials with desirable stability remain challenging for practical ***,we propose a fluorination strategy to develop high-performance EC-SC materials with tough hydrogen bonding cross-linked intermolecular polymer network by one-step electrosynthesis of *** electrosynthesized free-standing poly(3-fluorothiophene)(PFT)films simultaneously achieve high electrochromic performance(optical contrast 42%at 560 nm with reversible color changes between purple and blue),and good capacitance property(290 F·g^(-1),1 A·g^(-1)),as well as outstanding cyclic stability(<2%reduction after 20000 cycles).We further demonstrate the fabrication of PFT-based flexible electrochromic supercapacitor devices(FESDs),and the resultant devices can be used to visually monitor the energy storage state in real-time and maintain outstanding stability under mechanical distortion like *** a tough fluorination hydrogen bonding cross-linking strategy may provide a new design concept for high-performance EC-SC materials and reliable FESDs toward practical applications.

关键词： Flexible electrochromic-supercapacitors Conducting polymers Hydrogen bonding crosslinking Electrosynthesis Polythiophene

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S-scheme heterojunction construction of Fe/BiOCl/BiVO4 for enhanced photocatalytic degradation of ciprofloxacin

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Progress in Natural science:Materials International 2024年第2期34卷 290-303页

作者： Guanlong Yu Qifang Sun Yi Yang Si Chen Yuannan Long Yifu Li Shiyong Ge Dian Zheng School of Hydraulic and Environmental Engineering Changsha University of Science & Technology Key Laboratory of Dongting Lake Aquatic Eco-Environmental Control and Restoration of Hunan Province School of Environmental Engineering Wuhan Textile University

With the growing problem of water pollution caused by antibiotics,the development of photocatalysts with high photogenerated carrier separation efficiency is crucial.A high-efficiency microsphere Fe/BiOCl/BiVO4with Sscheme heterojunction was synthesized by solvothermal method and its ciprofloxacin（CIP） degradation performance were investigated under visible ***,FT-IR,SEM,EDS,HRTEM and XPS results show that the photocatalytic have good crystallization,morphology and the formed a *** photocatalytic performance of Fe/BiOCl/BiVO4for CIP was superior to pure BiOCl and BiVO4due to the microsphere and formed heterostructure between BiOCl and *** influencing factors of CIP degradation by Fe/BiOCl/BiVO4were investigated,and the results showed that Fe/BiOCl/BiVO4had high degradation efficiency not only at pH 5-9,but also in the presence of inorganic Cl-,NO3-and metal *** the optimal conditions,the degradation rate of CIP was up to 100% in 75 *** addition to CIP,the Fe/BiOCl/BiVO4photocatalysts degraded other organic pollutants,such as tetracycline,oxytetracycline,chlortetracycline,ofloxacin,levofloxacin,and rhodamine B,by more than 92%.The main active species were photogenerated holes（h+） and superoxide radicals（·O2-）.In addition,possible intermediates and toxicity of intermediates were analyzed and five potential pathways for CIP degradation were proposed.

关键词： BiOCl/BiVO4 Fe3+ doping Organic pollutant Photocatalysis S-scheme heterojunction

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Morphology-dependent activation of hydrogen peroxide with Cu_(2)O for tetracycline hydrochloride degradation in bicarbonate aqueous solution

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Journal of Environmental sciences 2024年第3期137卷 567-579页

作者： Xiuying Liu Qianna Xia Jiao Zhou Bowen Li Shuaiqi Zhao Long Chen Aimal Khan Xiaoxia Li Aihua Xu School of Chemistry and Chemical Engineering Wuhan Textile UniversityWuhan 430200China Hubei Key Laboratory of Biomass Fibers and Eco-Dyeing and Finishing Wuhan Textile UniversityWuhan 430200China School of Environmental Science and Engineering Huazhong University of Science and TechnologyWuhan 430074China

The design of efficient heterogeneous catalysts in bicarbonate-activated hydrogen peroxide systems(BAP)is a hot topic in wastewater *** this work,Cu_(2)O nanoparticles with different morphologies including cubic shape(c-Cu_(2)O),octahedron shape(o-Cu_(2)O)and spherical shape(s-Cu_(2)O),were applied in BAP for the first time to degrade tetracycline hydrochloride(TC).Compared with Cu^(2+)ions and CuO,TC degradation was boosted in the presence of Cu_(2)O in the BAP system,with the degradation rate following the order c-Cu_(2)O>o-Cu_(2)O>s-Cu_(2)*** morphology-dependent effects could be linearly correlated with the ratio of surface oxygen species(O_S),but not with the surface area or Cu(Ⅰ)*** c-Cu_(2)O catalyst with exposure of(100)facets contained 76.6%O_Sas the active site for H_(2)O_(2)adsorption and activation,while the value was much lower for o-Cu_(2)O and s-Cu_(2)O with dominant(111)*** presence of HCO_(3)-enhanced the interactions among Cu_(2)O,H_(2)O_(2)and TC,leading to facile oxidation of Cu(Ⅰ)to Cu(Ⅱ)by H_(2)O_(2),and the formation of various reactive species such as hydroxyl radicals and Cu(Ⅲ)contributed to TC *** work provides a new method for enhancing H_(2)O_(2)activation with heterogeneous catalysts by crystal facet engineering.

关键词： Hydrogen peroxide Bicarbonate Cu_(2)O Morphology-dependent effects

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High performance soft fiber-reinforced sodium alginate/polyacrylamide double-network hydrogels

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Progress in Natural science:Materials International 2024年第6期34卷 1267-1273页

作者： Xiaodan Wang Dan Xie Wenwen Hou Lilong Gao Yanzhi Xia Kunyan Sui College of Materials Science and Engineering State Key Laboratory of Bio-Fiber and Eco-textiles Collaborative Innovation Center for Marine Biobased Fibers and Ecological Textile Technology Institute of Marine Biobased Materials Qingdao University

Strong and stretchable hydrogels are in great demand but challenging due to the trade-off between the strength and stretchability. Here, we successfully prepared highly strong and stretchable sodium alginate/polyacrylamide（SA/PAM） double network（DN） hydrogels by using swollen calcium alginate fiber（CAF） as the first energy dissipating network. The swollen fibers contributed two functions: the homogeneous SA ionic crosslinkedpolymer networks and the soft fiber reinforcement. In contrast to the stiff fiber, the soft CAF provide more effective energy dissipation transferring from soft fiber to the liquid hydrogel. The as-prepared hydrogels demonstrated a high tensile strength（0.83 MPa）, high stretchability（4230 %）, and high toughness（15.7 MJ/m3）,as 5, 3 and 14 times of the SA/PAM hydrogels. This soft fiber-reinforced strategy offers a new way for preparing high-performance hydrogels, broadening their applications areas.

关键词： Highly stretchable hydrogels Soft sodium alginate fiber Double networks hydrogels

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Controllable diameter of electrospun nanofibers based on the velocity of whipping jets for high-efficiency air filtration

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science China(Technological sciences) 2022年第2期65卷 481-489页

作者： LEI SaiLing WANG LiMing WANG RongWu QIN XiaoHong YU JianYong Key Laboratory of Textile Science&Technology Ministry of EducationCollege of TextilesDonghua UniversityShanghai 201620China Innovation Center for Textile Science and Technology Donghua UniversityShanghai 201620China

Electrospun nanofibers are regarded as a promising candidate for filtration because of their prominent size *** precise control of nanofiber diameter is the key to the material’s outstanding filtration capability,but it remains a ***,an electrohydrodynamic scaling model is established for the accurate prediction of fiber diameter based on the velocity of the whipping *** this model,the velocity reflects jet stretching and is tuned by adding *** theoretical predictions agree well with the experimental *** the proposed diameter model,the filtration property of the membrane is significantly optimized by governing the fiber *** the nanofiber is slenderized to 183 nm,an ultralight (0.521 g m;) membrane exhibits high filtration efficiency (99.93%) and low pressure drop (105.2 Pa) against ultrafine aerosol particles (≤0.26μm) under an airflow face velocity of 5.33 cm s^(-1).These findings demonstrate that the established surface charge-based diameter model provides an excellent platform to timely and accurately control the nanofiber diameter via the velocity of whipping jets for highefficiency air filtration.

关键词： electrospinning jet velocity fiber diameter filtration

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