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White-light emitting single-phase phosphor La_3Si_6N_(11):Dy^(3+),Tb^(3+):Color tunable emission, thermal stability and energy transfer process

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Journal of Rare Earths 2019年第4期37卷 350-355页

作者： yuanhong Liu yuan Xue Ronghui Liu Mingyue Chen Guantong Chen Chunpei Yan Xia Zhang yu'nan zhou Wei Gao Xiaole Ma National Engineering Research Center for Rare Earth Materials General Research Institute for Nonferrous Metals Grirem Advanced Materials Co.Ltd.

A novel white-light emitting single-phase phosphor La_3 Si_6 N_(11):Dy^(3+),exhibiting two emission peaks centering at 475 and 575 nm, was prepared via conventional solid-state reactions. The structure and morphology of La_3 Si_6 N_(11):Dy^(3+)/Tb^(3+) were investigated by X-ray diffraction(XRD) and scanning electron microscopy(SEM). The emission colors can be tuned from white to yellow-green through increasing the Tb^(3+) concentration in La_3 Si_6 N_(11):Dy^(3+),Tb^(3+), The mechanism of energy transfer(ET) from Dy^(3+) to Tb^(3+) is confirmed according to the excitation,emission spectra and decay lifetimes curve. The temperaturedependent luminescence measurements of La_(2.83)Si_6 N_(11):0.1 Dy^(3+),0.07 Tb^(3+) were also performed, and a good thermal stability is shown, suggesting superior properties for the application as white lightemitting diodes(w-LEDs) phosphor.

关键词： Single-phase White emission Energy transfer Rare earths

A novel three-step approach to separate cathode components for lithium-ion battery recycling

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Rare Metals 2021年第6期40卷 1431-1436页

作者： yun Zhao Ling-Zhe Fang yu-Qiong Kang Li Wang yu-nan zhou Xin-Yi Liu Tao Li Yan-Xi Li Zheng Liang Zhe-Xu Zhang Bao-Hua Li Engineering Laboratory for Next Generation Power and Energy Storage Batteries Graduate School at ShenzhenTsinghua UniversityShenzhen 518055China Department of Chemistry and Biochemistry Northern Illinois UniversityDekalb 60115USA Institute of Nuclear and New Energy Technology Tsinghua UniversityBeijing 100084China Department of Materials Science and Engineering Stanford UniversityStanford 94305USA

Lithium-ion batteries(LIBs)represent efficient energy storage technology that can help to alleviate fossil fuel-based CO_(2) ***,LIBs are being applied extensively in consumer electronics and electric vehicles,but because of limited resources,there is an urgent need for spent LIB recycling *** complexity of LIBs,especially the electrode part,makes it difficult to achieve precision separations for each single component from the used electrode with low ***,we propose a three-step treatment for the separation of cathode *** detail,detaching of the current collector from the cathode is accomplished by the solvent method,which was found to be an ideal strategy compared with previous ***,a thermal treatment is used to remove the polymer binder in the second step because we demonstrated that it is challenging to separate polyvinylidene fluoride(PVDF)from other cathode components by dissolution with *** separation efficiency between the active material and conductive carbon by the polymer solution in the third step showed reasonably good *** anticipate this work will serve as an important reference for the separation of each single electrode component in both laboratory-and industrialscale *** of binder and development of novel binders,which can be easily recycled for sustainable LIBs,are fruitful areas for further research.

关键词： Lithium-ion batteries Recycling Electrode separation PVDF Thermal treatment Polymer solution

TWO　NEW　TRITERPENOID　SAPONINS，ASTERBATANOSIDE　B　AND　C　FROM　ASTER　BATANGENSIS

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Chinese Chemical Letters 1994年第10期5卷 835-838页

作者： yu SHAO and Bing nan zhou (Shanghai Institute of Materis Madica, Academia Sinica, Shanghai 200031)

Two new oleanane-type triterpenoid saponins, asterbatanoside B and C have been isolated from the roots of Aster batsngensis and their structures elucidated as -2a, 3P, 23-trihydroxyolean-12-en-28-cio acid -28-O-β-D-glucopyranosyl-(1-6) β-Dglucopyranoside and 3-O-β-D-glucopyrsnosyl-2D, 3β, 23-trihydroxyolean-12-en-28-oicacid-28-O-β-D-glucopyranoside by means of spectral data and chemical evidence.

关键词： ASTERBATANOSIDE TRITERPENOID TWO FROM NEW SAPONINS AND BATANGENSIS

A NEW TRITERPENOID SAPONIN, ASTERyuNnanOSIDE H, FROM ASTER yuNnanENSIS

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Chinese Chemical Letters 1994年第10期5卷 839-842页

作者： yu SHAO and Bing nan zhou Kan MA and Hou Ming WU (Shanghai Institute of Materia Medica, Academia Sinica, Shanghai 200031 Shanghai Institute of Ofganic Chemistry Academia Sinica, Shanghai 200032)

A new echinocystic acid saponin, asteryunnanoside H (1), has been isolated from the roots of Astsr yunnanensis (Compositae). The structure and the unambiguous assignments of the 1H- and 13C NMR data of 1 were obtained based on extensive use of 1D and 2D NMR techniques (COSY. TOCSY, ROESY, HMQC and HMBC), and chemical transformations.

关键词： ASTERyuNnanOSIDE H A NEW TRITERPENOID SAPONIN FROM ASTER yuNnanENSIS

TWO　NEW　TRITERPENOID　SAPONINS，ASTERBATANOSIDE　D　ANDE，FROM　ASTER　SATANGENSIS

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Chinese Chemical Letters 1994年第11期5卷 941-944页

作者： yu SHAO and Bing nan zhou Kan MA and Hou Ming WU (Shanghai Institute of Materia Medica, Academia Sinica,Shanghai 20O031 Shanghai Institute of Organic Chemistry,Academia Sinica, Shanghai 200032)

Two new triterpenoid saponins named asterbatanoside D and E have been isolated from Aster batgngensis and their structures elucidated as 3-O-β-D-glucopyranosyl-bayogenin-28-O- β-D-glucopyranosyl-(1→6)-β-D-glucopyranoside and 3-O-6'-acetyl-β-D-glucopyranosyl-bayogenin-28-O-β-D-glucopyranosyl-(1→6)-β-D-glucopyranosyl. based on MS, 1D and 2D NMR techniques (COSY,TOCSY,ROESY, HMQC and HMBC), and Chemical reactions.

关键词： ASTERBATANOSIDE TRITERPENOID TWO NEW SAPONINS SATANGENSIS ANDE FROM

Mechanistic insight into the synergy between nickel single atoms and nanoparticles on N-doped carbon for electroreduction of CO2

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Journal of Energy Chemistry 2025年第1期100卷 327-336页

作者： Mingdong Sun Wenwen Guan Cailing Chen Chao Wu Xiaoling Liu Biao Meng Tao Chen yu Han Jun Wang Shibo Xi yu zhou State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical Engineering Nanjing Tech University Advanced Membranes and Porous Materials Center Physical Sciences and Engineering Division King Abdullah University of Science and Technology Institute of Sustainability for Chemicals Energy and Environment A*STAR (Agency for Science Technology and Research) College of Materials Science and Engineering Sichuan University

The synergy of single atoms （SAs） and nanoparticles （NPs） has demonstrated great potential in promoting the electrocatalytic carbon dioxide reduction reaction （CO2RR）;however,the rationalization of the SAs/NPs proportion remains one challenge for the catalyst ***,a Ni2+-loaded porous poly（ionic liquids）(PIL) precursor synthesized through the free radical self-polymerization of the ionic liquid monomer,1-allyl-3-vinylimidazolium chloride,was pyrolyzed to prepare the Ni,N co-doped carbon materials,in which the proportion of Ni SAs and NPs could be facilely modulated by controlling the annealing *** catalyst Ni-NC-1000 with a moderate proportion of Ni SAs and NPs exhibited high efficiency in the electrocatalytic conversion of CO2into *** Ni K-edge X-ray absorption near-edge structure （XANES） spectra and theoretical calculations were conducted to gain insight into the synergy of Ni SAs and *** charge transfer from Ni NPs to the surrounding carbon layer and then to the Ni SAs resulted in the electron-enriched Ni SAs active *** the electroreduction of CO2,the coexistence of Ni SAs and NPs strengthened the CO2activation and the affinity towards the key intermediate of*COOH,lowering the free energy for the potential-determining*CO2→*COOH step,and therefore promoted the catalysis efficiency.

关键词： Single atom catalyst Synergy effect Carbon catalyst Electrocatalysis

nanostructured ZnO/BiVO_(4)I-scheme heterojunctions for piezocatalytic degradation of organic dyes via harvesting ultrasonic vibration energy

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 488-497页

作者： Yiling Li Xiaoyao yu Yingjie zhou Yao Lin Ying Wu Key Laboratory of the Ministry of Education for Advanced Catalysis Materials College of Chemistry and Materials ScienceZhejiang Normal UniversityJinhua 321004China

BiVO_(4)porous spheres modified by ZnO were designed and synthesized using a facile two-step *** resulting ZnO/BiVO_(4)composite catalysts have shown remarkable efficiency as piezoelectric catalysts for degrading Rhodamine B(RhB)unde mechanical vibrations,they exhibit superior activity compared to pure *** 40wt%ZnO/BiVO_(4)heterojunction composite displayed the highest activity,along with good stability and *** enhanced piezoelectric catalytic activity can be attributed to the form ation of an I-scheme heterojunction structure,which can effectively inhibit the electron-hole ***,hole(h+)and superoxide radical(·O_(2)^(-))are proved to be the primary active ***,ZnO/BiVO_(4)stands as an efficient and stable piezoelectric catalyst with broad potential application in the field of environmental water pollution treatment.

关键词： piezoelectric catalytic heterojunction dye degradation ultrasonic vibration

Bioinspired Ultrasensitive Flexible Strain Sensors for Real-Time Wireless Detection of Liquid Leakage

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nanO-MICRO LETTERS 2025年第1期17卷 1-18页

作者： zhou, Weilong Du, yu Chen, Yingying Zhang, Congyuan Ning, Xiaowei Xie, Heng Wu, Ting Hu, Jinlian Qu, Jinping Huazhong Univ Sci & Technol Sch Chem & Chem Engn Key Lab Mat Chem Energy Convers & Storage Minist EducHubei Key Lab Mat Chem & Serv Failure Wuhan 430074 Peoples R China Huazhong Univ Sci & Technol Hubei Engn Res Ctr Biomat & Med Protect Mat Sch Chem & Chem Engn Wuhan 430074 Peoples R China Wuhan Inst Technol Sch Mat Sci & Engn Wuhan 430205 Peoples R China City Univ Hong Kong Dept Biomed Engn Hong Kong 999077 Peoples R China

Micro-extrusion compression molding and surface modification were proposed for the mass fabrication of a superhydrophobic thermoplastic polyurethane sensor (TCGS).Inspired by scorpions, TCGS features Archimedean spiral crack arrays and micropores, achieving 218.13 sensitivity at 2% strain, a 4300% increase, and over 5000 usage cycles of *** robust superhydrophobicity of TCGS improves sensitivity and stability for detecting small-scale liquid leakage, allowing precise monitoring across various sizes and compositions while providing early warnings in various scenarios. Liquid leakage of pipeline networks not only results in considerable resource wastage but also leads to environmental pollution and ecological imbalance. In response to this global issue, a bioinspired superhydrophobic thermoplastic polyurethane/carbon nanotubes/graphene nanosheets flexible strain sensor (TCGS) has been developed using a combination of micro-extrusion compression molding and surface modification for real-time wireless detection of liquid leakage. The TCGS utilizes the synergistic effects of Archimedean spiral crack arrays and micropores, which are inspired by the remarkable sensory capabilities of scorpions. This design achieves a sensitivity of 218.13 at a strain of 2%, which is an increase of 4300%. Additionally, it demonstrates exceptional durability by withstanding over 5000 usage cycles. The robust superhydrophobicity of the TCGS significantly enhances sensitivity and stability in detecting small-scale liquid leakage, enabling precise monitoring of liquid leakage across a wide range of sizes, velocities, and compositions while issuing prompt alerts. This provides critical early warnings for both industrial pipelines and potential liquid leakage scenarios in everyday life. The development and utilization of bioinspired ultrasensitive flexible strain sensors offer an innovative and effective solution for the early wireless detection of liquid leakage.

关键词： Thermoplastic polyurethane Bioinspired Cracks Liquid leakage Flexible strain sensor

Co/Co_(7)Fe_(3)heterostructures with controllable alloying degree on carbon spheres as bifunctional electrocatalyst forrechargeable zinc-air batteries

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 476-487页

作者： Junkang Chen Yongyue Zhuang Yanxin Qiao yu Zhang Aihua yuan Hu zhou School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Exploring efficient and nonprecious metal electrocatalysts of oxygen reduction reaction(ORR)and oxygen evolution reaction(OER)is crucial for developing rechargeable zinc-air batteries(ZABs).Herein,an alloying-degree control strategy was employed to fabricate nitrogen-doped carbon sphere(NCS)decorated with dual-phase Co/Co_(7)Fe_(3)heterojunctions(CoFe@NCS).The phase composition of materials has been adjusted by controlling the alloying *** optimal CoFe_(0.08)@NCS electrocatalyst displays a half-wave potential of 0.80 V for ORR and an overpotential of 283 mV at 10 mA·cm^(-2)for OER in an alkaline *** intriguing bifunctional electrocatalytic activity and durability is attributed to the hierarchically porous structure and interfacial electron coupling of highly-active Co_(7)Fe_(3)alloy and metallic Co *** the CoFe_(0.08)@NCS material is used as air-cathode catalyst of rechargeable liquid-state zinc-air battery(ZAB),the device shows a high peak power-density(157 mW·cm^(-2))and maintains a stable voltage gap over 150 h,outperforming those of the benchmark(Pt/C+RuO_(2))-based *** particular,the as-fabricated solid-state flexible ZAB delivers a reliable compatibility under different bending *** work provides a promising strategy to develop metal/alloy-based electrocatalysts for the application in renewable energy conversion technologies.

关键词： bifunctional electrocatalysts oxygen reduction reaction oxygen evolution reaction zinc-air battery metal/alloy carbon sphere