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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第01期 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Hubei Key Laboratory of Novel Reactor and Green Chemical Technology School of Chemical Engineering & Pharmacy Wuhan Institute of Technology Key Laboratory of Pesticide & chemical biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of Education College of Chemistry Central China Normal University college of Materials Science and Engineering Fuzhou University

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction（OER）. Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER process. However, most of them undergo incomplete reconstruction with limited thickness of reconstruction layer, leading to low component utilization and arduous exploration of real catalytic mechanism. Herein, we identify the dynamic behaviors in complete reconstruction of Co-based complexes during OER. The hollow phytic acid（PA） cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability, in favor of the fast and complete reconstruction. A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co（Fe）(OH)xand subsequent potential-driven oxidation to Co（Fe）OOH. The obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm-2and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER activity. The work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

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Organic micro-pollutant removal in liquid-phase using carbonized silk cotton hull

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Journal of Environmental Sciences 2008年第9期20卷 1046-1054页

作者： M Sathishkumar A R Binupriya D Kavitha R Selvakumar K K Sheema J G Choi Department of Food Science and Technology Institute of Agricultural Science and Technology Chonbuk National University Department of chemical Engineering Yonsei University Department of biotechnology Bharathiar University Department of Plant biology and biotechnology Government Arts College National Agricultural Products Quality Management Services

Phenolic compounds constitute one of the major pollutants in the modern world. Although many physical and chemical treatment technologies for their removal exist, most of them are economically not feasible. The present study was aimed at using silk cotton hull, a potent agricultural waste as an adsobent for removal of 2,4-dichlorophenol (2,4-DCP), which was used as a model phenolic compound. The process parameters were investigated and optimized conditions were determined. The equilibrium time was found to ...

关键词： silk cotton hull carbon adsorption 2 4-DCP temperature kinetic study

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Syntheses and Crystal Structures of Two New α-Aminophosphonate Derivatives Containing Thieno[2,3-d]pyrimidine

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Chinese Journal of Structural Chemistry 2015年第6期34卷 879-884页

作者： ZHU Xi-Feng GUO Yan-Chun YU Zhi-Ran LIAO Xin-Cheng ZHAO Yu-Fen The college of Chemistry and Molecular Engineering The Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province Zhengzhou University Department of Chemistry College of Chemistry and Chemical Engineering The Key Laboratory for Chemical Biology of Fujian Province Xiamen University

Two new a-aminophosphonate derivatives containing thieno[2,3-d]pyrimidine, diethyl（（（6-ethyl-2-methyl-4-oxothieno[2,3-d]pyrimidin-3 （4H）-yl）amino）（4-methoxyphenyl）methyl） phosphonate （1） and diethyl（（4-bromophenyl）（（6-ethyl-2-methyl-4-oxothieno[2,3-d]pyrimidin-3 （4//）-yl）amino）methyl）phosphonate （2）, have been synthesized by a facial phosphorylated reaction, and their structures were characterized by NMR, IR, HRMS and X-ray single-crystal diffraction. Compound 1 （C21H28N3O5PS, Mr = 465.49） belongs to the orthorhombic system, space group P212121, with a = 10.83653（16）, b = 12.04906（19）, c = 18.0061（3） A, V= 2351.06（6） A3, Z= 4, Dc= 1.315 g/cm3, p = 2.177 mm-1, F（000） = 984.0, the final R = 0.0389 and wR = 0.0985 for all data. Compound 2 （C20H25BrN304PS, Mr = 514.37） belongs to the orthorhombic system, space group P212121, with a = 10.9187（5）, b = 11.9522（4）, c = 17.7667（7） A, V= 2318.60（16） A3, Z = 4, Dc= 1.474 g/cm3,μ = 4.175 mm^-1, F（000） = 1056.0, the final R = 0.0367 and wR = 0.0946 for all data.

关键词： thieno[2,3-d]pyrimidine a-aminophosphonate derivatives synthesis crystal structure

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Effects of lanthanum on abscisic acid regulation of root growth in Arabidopsis

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Journal of Rare Earths 2014年第1期32卷 78-82页

作者：王建荣王蕾胡婷李文超薛绍武 Institute of Molecular Science Shanxi University Key Laboratory of chemical biology and Molecular Engineering of Ministry of Education Institute of Biotechnology Shanxi University college of Life Science and Technology Huazhong Agricultural University

Rare earth elements （REEs） were reported to have adverse biology effects on plant growth and production. However, whether REEs are involved in plant hormone abscisic acid signal is not clear. Here we reported that REE lanthanum （La） interacted with abscisic acid （ABA） in the regulation of seed germination and root growth in model plant Arabidopsis. La3＋at a concentration of 10 μmol/L alleviated ABA depression of seed germination and reversed ABA inhibition of root elongation growth in Arabidopsis. Previous studies showed that ABA could promote root hair development. In the present study, La3＋inhibited root hair development promoted by ABA. Moreover, La3＋inhibited H2O2 generation induced by ABA in root cells. Therefore we inferred that La3＋might interact with ABA upstream of H2O2 generation.

关键词： lanthanum abscisic acid reactive oxygen species Arabidopsis rare earths

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Nutrients regeneration pathway, release potential, transformation pattern and algal utilization strategies jointly drove cyanobacterial growth and their succession

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Journal of Environmental Sciences 2021年第5期33卷 255-267页

作者： Hui Li Chunlei Song Liu Yang Hangdao Qin Xiuyun Cao Yiyong Zhou college of Material and chemical Engineering TongRen UniversityTongren 554300China State key laboratory of Freshwater Ecology and biotechnology Key laboratory of Algal BiologyInstitute of HydrobiologyChinese Academy of SciencesWuhan 430072China college of Chemistry and chemical Engineering Neijiang Normal UniversityNeijiang 641100China

In order to better understand the contribution of nutrients regeneration pathway, release potential and transformation pattern to cyanobacterial growth and succession, 7 sampling sites in Lake Chaohu with different bloom degree were studied every two months from February to November 2018. The carbon, nitrogen(N) and phosphorus(P) forms or fractions in surface, interstitial water and sediments as well as extracellular enzymatic activities, P sorption, specific microbial abundance and community composition in sediments were analyzed. P regeneration pathway was dominated by iron-bound P desorption and phosphorus-solubilizing bacteria solubilization in severe-bloom and slight-bloom area respectively, which both resulted in high soluble reactive phosphorus(SRP) accumulation in interstitial water. However, in severe-bloom area, higher P release potential caused the strong P release and algal growth, compared to slight-bloom area. In spring, P limitation and N selective assimilation of Dolichospermum facilitated nitrate accumulation in surface water, which provided enough N source for the initiation of Microcystis bloom. In summer, the accumulated organic N in Dolichospermum cells during its bloom was re-mineralized as ammonium to replenish N source for the sustainable development of Microcystis bloom. Furthermore, SRP continuous release led to the replacement of Dolichospermum by Microcystis with the advantage of P quick utilization, transport and storage. Taken together, the succession from Dolichospermum to Microcystis was due to both the different forms of N and P in water column mediated by different regeneration and transformation pathways as well as release potential, and algal N and P utilization strategies.

关键词： Lake Chaohu Sediment Phosphorus Nitrogen Cyanobacteria bloom

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Indium recovery from zinc oxide flue dust by oxidative pressure leaching

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Transactions of Nonferrous Metals Society of China 2010年第S1期20卷 141-145页

作者：黎铉海张燕娟覃全伦阳健韦岩松 School of Chemistry and chemical Engineering Guangxi University Department of Chemistry and biology Hechi College

Indium was recovered from zinc oxide flue dust(ZOFD)with sulfuric acid by oxidative pressure leaching in an autoclave, and the effects of different technological conditions on indium leaching were *** permanganate and hydrogen peroxide were used as *** atmospheric pressure leaching experiments were also carried *** experimental results show that the leaching rate of indium can be effectively improved by oxidative pressure *** optimum conditions of pressure leaching are determined as sulfuric 5.10 mol/L acid,leaching time 150 min,temperature 90℃,and the H2O2 dosage of 0.5 mL/g or 2.5%*** leaching rate of indium is more than 90%,which is increased by 13%compared with that of atmospheric pressure leaching process without oxidant under the optimum conditions.

关键词： indium zinc oxide flue dust oxidative pressure leaching potassium permanganate hydrogen peroxide

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RNA barcode segments for SARS-CoV-2 identification from HCoVs and SARSr-CoV-2 lineages

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Virologica Sinica 2024年第1期39卷 156-168页

作者： Changqiao You Shuai Jiang Yunyun Ding Shunxing Ye Xiaoxiao Zou Hongming Zhang Zeqi Li Fenglin Chen Yongliang Li Xingyi Ge Xinhong Guo college of biology Hunan UniversityChangsha410082China college of Bioscience and biotechnology Hunan Agricultural UniversityChangsha410128China

Severe acute respiratory syndrome coronavirus 2(SARS-CoV-2),the pathogen responsible for coronavirus disease 2019(COVID-19),continues to evolve,giving rise to more variants and global *** research has demonstrated that barcode segments can effectively and cost-efficiently identify specific species within closely related *** this study,we designed and tested RNA barcode segments based on genetic evolutionary relationships to facilitate the efficient and accurate identification of SARS-CoV-2 from extensive virus samples,including human coronaviruses(HCoVs)and SARSr-CoV-2 *** sequences sourced from NCBI and GISAID were meticulously selected and curated to construct training sets,encompassing 1733 complete genome sequences of HCoVs and SARSr-CoV-2 *** genetic-level species testing,we validated the accuracy and reliability of the barcode segments for identifying ***,75 main and subordinate species-specific barcode segments for SARS-CoV-2,located in ORF1ab,S,E,ORF7a,and N coding sequences,were intercepted and screened based on single-nucleotide polymorphism sites and weighted ***-testing,these segments exhibited high recall rates(nearly 100%),specificity(almost 30%at the nucleotide level),and precision(100%)performance on *** were eventually visualized using one and two-dimensional combined barcodes and deposited in an online database(http://***/).The successful integration of barcoding technology in SARS-CoV-2 identification provides valuable insights for future studies involving complete genome sequence polymorphism ***,this cost-effective and efficient identification approach also provides valuable reference for future research endeavors related to virus surveillance.

关键词： RNA barcode segments SARS-CoV-2 variants and related lineages HCoVs Genetic tests Complete genome sequences

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Theranostical application of nanomedicine for treating central nervous system disorders

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Science China(Life Sciences) 2018年第4期61卷 392-399页

作者： Wang Ran Xue Xue State Key Laboratory of Medicinal chemical biology and college of Pharmacy Nankai University

The primary reason for the failure of traditional medicine in treating the disorders of the central nervous system(CNS) is the obstruction to traverse the blood-brain barrier(BBB). Due to the unique physiochemical properties of nanoparticles, they can preferably help deliver drugs passing through the BBB. Researchers have been investigating the capacity of multifunctional nanomaterials as theranostical agents. However, some of the studies have reported controversial results, which might be due to different schematic designs, including size, surface charge, and shape. This review summarizes the applications of nanoparticles to overcome the BBB or contribute to improving the diagnostic and therapeutic effects in CNS diseases.

关键词： nanomedicine theranostical efficacy drug delivery system blood-brain barrier central nervous system

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Slight shading after anthesis increases photosynthetic productivity and grain yield of winter wheat (Triticum aestivum L.) due to the delaying of leaf senescence

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Journal of Integrative Agriculture 2016年第1期15卷 63-75页

作者： XU Cai-long TAO Hong-bin WANG Pu WANG Zhen-lin college of Agriculture and biotechnology China Agricultural University National Key Laboratory of Crop biology Agronomy College Shandong Agricultural University

The solar radiation intensity and duration are continuously decreasing in the major wheat planting area of China. As a con- sequence, leaf senescence, photosynthesis, grain filling and thus wheat yield shall be affected by light deficiency. Therefore, two winter wheat （Triticum aestivum L.） cultivars, Tainong 18 （a large-spike cultivar） and Ji＇nan 17 （a multiple-spike cultivar）, were subjected to shading during anthesis and maturity under field condition in 2010-2011 and 2011-2012. Under the slight shading treatment （$1,88% of full sunshine）, leaf senescence was delayed, net photosynthesis rate （Po） and canopy apparent photosynthesis rate （CAP） were improved, and thus thousand-kernel weight （TKW） and grain yield were higher as compared with the control. However, mid and severe shading （S2 andS3, 67 and 35% of full sunshine, respectively） led to negative effects on these traits substantially. Moreover, superoxide dismutase （SOD）, peroxidase （POD） and cat- alase （CAT） activities in flag leaf were significantly greater under slight shading than those in other treatments, while the malondialdehyde （MDA） content was less than that under other treatments. In addition, the multiple-spike cultivar is more tolerant to shading than large-spike cultivar. In conclusion, slight shading after anthesis delayed leaf senescence, enhanced photosynthesis and grain filling, and thus resulted in higher grain yield.

关键词： winter wheat shading photosynthesis leaf senescence grain yield

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Synthesis and Crystal Structure of [CpRu（η^5-C5H5）（dppc）Cl][PF6]

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Chinese Journal of Structural Chemistry 2006年第12期25卷 1471-1474页

作者：吴相华余广鳌孟祥高陈艳任勇刘盛华 Key Laboratory of Pesticide & chemical biology College of Chemistry Central China Normal University

The title complex [Ru（η5-C5H5）（dppc）Cl][PF6] has been synthesized by the reaction of [Ru（η^5-C5H5）（PPh3）2Cl] with [dppc][PF6] （1,1＇-bis（diphenylphosphino）cobaltocenium hexaflurophospate） in CH2Cl2, and its crystal structure was determined by single-crystal X-ray diffraction analysis. It crystallizes in monoclinic, space group P21/n with a =15.754（8）, b = 13.704（7）, c = 19.120（10） A, β = 106.148（9）°, V = 3965（4） A3, Z = 4, C40H35Cl3CoF6P3Ru, Mr=988.94, Dc = 1.657 g/cm^3, F（000） = 1984 and μ（MoKα） = 1.181 mm^-1. The final R = 0.0425 and wR = 0.1001 for 7002 independent reflections. The title complex shows a mononuclear Ru（Ⅱ） capped by an η^5-Cp ring, a chelating η^2-dppc and a terminal chloride to assume a three-legged piano-stool configuration.

关键词： ruthenium 1,1′-bis(diphenyiphosphino)cobaitocenium hexafluorophospate,crystal structure

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