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ZnONP/g-C_(3)N_(4)柱撑结构复合材料构建及NO光氧化脱除研究

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工程科学学报 2024年第11期46卷 2046-2054页

作者：张博川许磊谢诚孙永芬叶千钧刘燕芝昆明理工大学冶金与能源工程学院昆明650093 昆明理工大学微波能工程应用及装备技术国家地方联合工程实验室昆明650093 昆明理工大学复杂有色金属资源清洁利用国家重点实验室昆明650093

随着现代工业的飞速发展,如何实现氮氧化物的有效脱除成为目前亟待解决的重要难题.本研究提出了一种在石墨相氮化碳(g-C_(3)N_(4))表面原位生长纳米氧化锌点阵构建柱撑结构复合材料策略,以实现在可见光下光氧化去除NO.通过离子吸附反应... 详细信息

随着现代工业的飞速发展,如何实现氮氧化物的有效脱除成为目前亟待解决的重要难题.本研究提出了一种在石墨相氮化碳(g-C_(3)N_(4))表面原位生长纳米氧化锌点阵构建柱撑结构复合材料策略,以实现在可见光下光氧化去除NO.通过离子吸附反应,成功制备了不同氧化锌颗粒负载量的ZnO NP/g-C_(3)N_(4)柱撑结构复合光氧化剂,并对其结构和电子特性进行了研究.结果表明,氧化锌纳米颗粒(ZnO NP)的引入改善了g-C_(3)N_(4)的团聚,提高了比表面积,暴露出更多活性位点.异质结构的构建改善了复合材料能带结构,促进了光生载流子的迁移及分离,光氧化性能显著提升.在可见光照射下质量分数为2.5%的ZnO NP/g-C_(3)N_(4)样品展现出了优异的光氧化性能,对NO体积分数为3×10^(-5)%以下的混合空气光氧化去除表现出优良的高效稳定性.本研究为高性能光氧化剂的设计与构建提供了有效策略,并为消除工业NO污染物提供了技术参考.

关键词： g-C_(3)N_(4) ZnO 纳米材料光氧化 NO脱除

Theoretical study on the lithium bond interaction of furan homologues C_4H_4Y (Y=O, S) with LiCH_3 via DFT and MP2

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Chinese Science Bulletin 2008年第9期53卷 1315-1323页

作者： YUAN Kun LU LingLing liu yanzhi College of Life-Science and Chemistry Tianshui Normal University Tianshui 741001 China

The optimizations geometries and interaction energy corrected by BSSE of the complexes between C4H4Y (Y=O, S) and CH3Li have been calculated at the B3LYP/6-311++G** and MP2/6-311++G** levels. Three complexes were obtained. Abnormally, the calculations showed that all the C10—Li14 bond lengths increased obviously but the blue-shift of C10—Li14 stretching frequency occurred after formed complexes. The calculated binding energy with basis set super-position error (BSSE) and zero-point vibrational energy corrections of complexes I―III is ?45.757, ?35.700 and ?39.107 kJ·mol?1, respectively. The analyses on the combining interaction with the atom-in-molecules theory (AIM) also showed that a relatively strong lithium bond interaction presented in furan homologues C4H4Y---LiCH3 systems. Natural bond orbital theory (NBO) analysis has been performed, and the results revealed that the com- plex I is formed with n-σ type lithium bond interaction between C4H4O and LiCH3, complex II is formed with π-s type lithium bond interaction between C4H4O and LiCH3, and complex III is formed with π-s and n-s type lithium bond interactions between C4H4S and LiCH3, respectively.

关键词：锂络合物理论计算 NBO AIM

Theoretical study of N(C)―H…H―B multi-dihydrogen bonds

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Chinese Science Bulletin 2009年第7期54卷 1182-1189页

作者： KUN Yuan liu yanzhi Lǔ LingLing College of Life Science and Chemistry Tianshui Normal University Tianshui 741001 China

The optimized geometries, frequencies and interaction energy corrected with basis set superposition error (BSSE) of the multi-dihydrogen bond complexes C4H4NH…BH4.-and CH≡CH…BH4.-have been calculated at both the B3LYP/6-311++G** and the MP2/6-311++G** levels. The calculations were per-formed to study the nature of the N―H…H3―B and C―H…H2―B red shift multi dihydrogen bond in complex C4H4NH…BH-4 and CH≡CH…BH-.4 The BSSE-corrected multi-dihydrogen bond interaction en-ergy of complex I (C4H4NH…BH4-.) and complexⅡ(CH≡CH…BH-.4) is -76.62 and -33.79 kJ/mol (MP2/6- 311++G**), respectively. From the natural bond orbital(NBO)analysis, we detailedly discussed the orbital interactions, electron density transfers, rehybridizations and the essential of the correlative bond length changes in the two complexes. In addition, solvent effect on the geometric structures, vibration frequencies and interaction energy of the monomer and complexes was studied in detail. It is relevant to the relatively dielectric constants (ε).

关键词：债券二氢相互作用能轨道相互作用相对介电常数 BSSE 振动频率 B3LYP

Preparation and characterization of Li_2Mo_(0.9)La_(0.2)O_4 anode material

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Rare Metals 2006年第3期25卷 221-224页

作者： MO Zunli CHEN Hong SUN Yaling liu yanzhi LI Hejun liu Yongzhong College of Chemistry and Chemical Engineering Northwest Normal University Lanzhou 730070 China College of Material Science and Engineering Northwestern Polytechnical University Xi＇an 710072 China

La-doped Li2Mo0.9La0.2O4 was synthesized as an active anode material via the sol-gel process. The structural and morphological characteristics of the target product and the precursor were analyzed by XRD, SEM, and TG-DTA. Crystal started to format at 300℃ and the optimum crystal structure was obtained at 700℃. By detecting battery performance, the charged and discharged platform was over 3.6 V; the anode exhibited a discharge capacity decay of 2% from its initial capacity （165 mA·h/g） after 20 cycles. Therefore, it was a perfect anode material.

关键词： reversible batteries anode material sol-gel process Li2Mo0.9La0.2O4

Germination of embryo in soybean anther culture

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Chinese Science Bulletin 1998年第23期43卷 1991-1995页

作者： Guilan Zhao yanzhi liu Aiping Yin Junbo Li Jilin Acad Agr Sci Prov Key Open Lab Biotechnol Gongzhuling 136100 Peoples R China

A large number of experiments about induction of callus, embryo and germination of regeneration plants were done in soybean anther culture. Screening for genotypes, low_temperature pretreatment for floral buds, constituent of hormone in medium and effects of different temperatures on induction rate of callus and embryo were studied. It was found that the TDZ played an important role in embryo induction and germination. 28 genotypes had reaction competent to the anther culture in all 110 genotypes. Induction rate of callus was 26%-68.1%. Plant differentiation rate was 0.5%-2.0%.

关键词： Glycine max\% L. anther culture embryo germination.

中国地球系统模式对全球地表入射短波辐射和大气逆辐射的模拟效果评估

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沙漠与绿洲气象 2024年第1期18卷 59-65页

作者：张珂菡万梓文刘俨志王伟南京信息工程大学气象灾害预报预警与评估协同创新中心江苏南京210044 南京信息工程大学中国气象局生态系统碳源汇开放重点实验室江苏南京210044 临安区气象局浙江杭州311300

以云和地球辐射能量系统(CERES)数据集为准,量化了中国地球系统模式对地表入射短波辐射和大气逆辐射时空变化的模拟性能,明确了多模式间模拟结果存在不确定性的区域。结果表明:中国模式均能模拟出北半球地表入射短波辐射和大气逆辐射“... 详细信息

以云和地球辐射能量系统(CERES)数据集为准,量化了中国地球系统模式对地表入射短波辐射和大气逆辐射时空变化的模拟性能,明确了多模式间模拟结果存在不确定性的区域。结果表明:中国模式均能模拟出北半球地表入射短波辐射和大气逆辐射“夏高冬低”的季节变化特征。陆地上,中国模式对两个辐射分量月均值的模拟结果与CERES相当,在海洋上低于CERES结果。中国模式能模拟出地表入射短波辐射下降、大气逆辐射上升的年际变化趋势。对于2001—2014年均值,中国模式模拟的地表入射短波辐射在海洋和陆地上较CERES分别偏低3.3和3.0 W·m^(-2),模拟的大气逆辐射在海洋上与CERES结果相当,在陆地上较CERES低1.3 W·m^(-2)。除南北纬30°附近之外,中国模式在其他纬度均低估地表入射短波辐射,以热带和北极最为明显。模式对大气逆辐射的模拟偏差呈纬向波动特征,模拟误差大值出现在高大山脉处。中国模式模拟地表入射短波辐射不确定性极大的区域分布在热带雨林和南极洲沿海,模拟大气逆辐射不确定性极大的区域分布在格林兰岛、青藏高原、安第斯山脉和南极洲沿海。

关键词：耦合模式比较计划第六阶段(CMIP6) 中国地球系统模式地表入射短波辐射大气逆辐射云和地球辐射能量系统(CERES)

Synthesis of PMA/Eu_2O_3 porous-layered nanocomposite by in situ polymerization and its morphology

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Rare Metals 2006年第1期25卷 63-67页

作者： MO Zunli liu yanzhi WANG Kunjie LI Hejun CHEN Hong SUN Yinxia Chemistry Department Northwest Normal University Lanzhou 730070 China College of Material Science and Engineering Northwestern Polytechnical University Xi＇an 710072 China

The PMA/Eu2O3 porous and layered nanocomposite was prepared by in situ polymerization and characterized by means of X-ray diffraction （XRD）, transmission electron microscopy （TEM）, scanning electron microscope （SEM）, and inflared ray （IR）. Microscopic investigation of the nanocomposite was carded out by atomic force microscopy （AFM）. The results showed that the shape of the composite was layered and porous. Eu2O3 was grafted when methyl acrylate （MA） polymerized; thus Eu2O3 particles appeared on both sides of the chains of polymeric methyl acrylate （PMA）.

关键词： nanocomposite porous-layered nanocomposite in situ polymerization synthesis rare earth

Weak interaction between CH_3SO and HOCl: Hydrogen bond, chlorine bond and oxygen bond

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Chinese Science Bulletin 2009年第17期54卷 3014-3022页

作者： LI ZhiFeng LI HongYu liu yanzhi SHI XiaoNing TANG HuiAn College of Life Science and Chemistry Tianshui Normal University Tianshui 741001 China

B3lyp/6-311++g** and mp2/6-311++g** calculations were used to analyze the interaction between CH3SO and HOCl. Nine (complex A: S1A-S9A) and five (complex B: S4B-S7B and S10B) minima were localized on the potential energy surface of CH3SO…HOCl complexes at b3lyp/6-311++g** and mp2/ 6-311++g** computational levels, respectively. The AIM and NBO theories were also applied to explain the nature of the complexes. Bonding energy of complexes A and B corrected with BSSE falls in the ranges of -0.4―-41.4 kJ·mol-1 and -6.9―-35.8 kJ·mol-1 at mp2/6-311++g** level, respectively. The re- sults show that a novel oxygen bond complex (S6) exists in the system, besides hydrogen bond and chlorine bond. Especially, S6B-F, S6B-Br and S7B are blue shifted complexes compared with red shifted S6A, because the electron transfer occurs between LP1(S8) and σ*(O5-Cl7), resulting in the increase of O5-Cl7 and the decrease of vibrational frequency. The complex of S10B has characteristics of both red shift and blue shift.

关键词：弱相互作用次氯酸氢键氧误差校正电子转移振动频率复合物

A Plant Lectin Receptor-like Kinase Phosphorylates the Bacterial Effector AvrPtoB to Dampen Its Virulence in Arabidopsis

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Molecular Plant 2020年第10期13卷 1499-1512页

作者： Ning Xu Xuming Luo Wei Wu Yingying Xing Yingbo Liang yanzhi liu Huasong Zou Hai-Lei Wei Jun liu State Key Laboratory of Plant Genomics Institute of MicrobiologyChinese Academy of SciencesBeijing 100101China CAS Center for Excellence in Biotic Interactions University of Chinese Academy of SciencesBeijing 100049China College of Plant Protection Fujian Agriculture and Forestry UniversityFuzhou 350002China Key Laboratory of Microbial Resources Collection and Preservation Ministry of Agriculture and Rural AffairsInstitute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China

Plasma membrane-localized receptor-like kinases(RLKs)perceive conserved pathogen-associated molecular pattems(PAMPs)in plants,leading to PAMP-triggered immunity(PTI).TheArabidopsis thaliana lectin RLK LecRK-Ⅸ.2 has been shown to regulate the bacterial flagellin-derived peptide flg22-induced ***,we discover that Pseudomonas syringae effector AvrPtoB targets LecRK-Ⅸ.2 for degradation,which subsequently suppresses LecRK-Ⅸ.2-mediated PTI and disease ***,LecRK-Ⅸ.2 can interact with and phosphorylate AvrPtoB at serine site 335(S335).AvrPtoB self-associates in vitro and in vivo,and the association appears to be essential for its E3 ligase activity in ubiquitinating substrate in *** of S335 disrupts the self-association and as a result,phosphomimetic AvrPtoBS335D cannot ubiquitinate LecRK-Ⅸ.2 efficiently,leading to the compromised virulence of AvrPtoB in suppressing PTI ***22 enhances AvrPtoB S335 phosphorylation by inducing the expression and activating of LecRK-Ⅸ.*** study demonstrates that host RLKs can modify pathogen effectors to dampen their virulence and undermine their ability in suppressing PTI.

关键词： Arabidopsis AvrPtoB LecRK-Ⅸ.2 Pseudomonas syringae ubiquitination