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Interlayer and doping engineering in partially graphitic hollow carbon nanospheres for fast sodium and potassium storage

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Chinese Chemical Letters 2023年第2期34卷 582-587页

作者： Dongfei Sun Sen Lin Dandan Yu Zijuan Wang Fangfang Deng Xiaozhong Zhou Guofu Ma Ziqiang Lei Key Laboratory of Eco-functional Polymer Materials of the Ministry of Education Key Laboratory of Eco-environmental Polymer Materials of Gansu ProvinceCollege of Chemistry and Chemical EngineeringNorthwest Normal UniversityLanzhou 730070China

Constructing anodes with fast ions/electrons transfer paths is an effective strategy to achieve high-performance sodium ion batteries(SIBs)/potassium ion batteries(PIBs). Amorphous carbon is a promising candidate anode for SIBs/PIBs owing to its disordered carbon layers, abundant defects/pores, and lowcost resources. However, the larger radius of Na^(+)/K^(+) leading to depressed kinetics and poor cycling performance, impeding their further applications. Herein, we propose an efficient strategy to construct of nitrogen, sulfur co-doped hollow carbon nanospheres(NS-HCS) involving an in situ growth of polydopamine on nano-Ni(OH)2template with subsequent sulfur doping process. During the formation process, the produced Ni nanospheres play as the hard template and catalyst for the formation of hollow carbon nanosphere with partially graphite microcrystalline structure, while the sulfur doping process can enlarge the interlayer space and create more defects on the surface of carbon nanospheres, thus synchronous improve the Na^(+)/K^(+) insertion and adsorption ability in NS-HCS. With the synergistic control of the enlarged interlayer spacing, high content of pyridinic N/pyrrolic N and graphitization, a hybrid storage mechanism facilitates the transport kinetics and endows the NS-HCS electrode with high capacities and good cycling stability in SIBs and PIB. Benefit from the multiple effects, NS-HCS exhibits the improved capacity of 274.8 m Ah/g at 0.1 A/g and excellent cycling stability of 149.5 m Ah/g after 5000 cycles at2.5A/g in SIBs, as well as good potassium ion storage behavior with a high capacity retention of 76.5%after 700 cycles at 1.0 A/g, demonstrating the potential applications of NS-HCS for high-performance SIBs and PIBs.

关键词： Heteroatom doping Hollow carbon nanosphere Long cycle life Hybrid storage mechanism Sodium ion batteries Potassium ion batteries

Light-Programmed Bistate Colloidal Actuation Based on Photothermal Active Plasmonic Substrate

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Research 2023年第1期6卷 573-581页

作者： Fangfang Deng Juntao Chen Junxiang Xiang Yong Li Yan Qiao Ze Liu Tao Ding Key Laboratory ofArtificial Micro-and Nano-structures of Ministry of Education of China Schoolof Physics and TechnologyWuhan UniversityWuhan 430072China Department of Engineering Mechanics School of Civil EngineeringWuhan UniversityWuhanHubei 430072China Beijing National Laboratory for Molecular Sciences(BNLMS) Laboratory of Polymer Physics and ChemistryCAS Research/Education Center for Excellence in Molecular SciencesInstitute of ChemistryChinese Academy of SciencesBeijing 100190China

Active particles have been regarded as the key models to mimic and understand the complex systems of nature.Although chemical and field-powered active particles have received wide attentions,lightprogrammed actuation with long-range interaction and high throughput remains elusive.Here,we utilize photothermal active plasmonic substrate made of porous anodic aluminum oxide filled with Au nanoparticles and poly(N-isopropylacrylamide)(PNIPAM)to optically oscillate silica beads with robust reversibility.The thermal gradient generated by the laser beam incurs the phase change of PNIPAM,producing gradient of surface forces and large volume changes within the complex system.The dynamic evolution of phase change and water diffusion in PNIPAM films result in bistate locomotion of silica beads,which can be programmed by modulating the laser beam.This light-programmed bistate colloidal actuation provides promising opportunity to control and mimic the natural complex systems.

关键词： state thermal beads

Transcriptome and co-expression network analyses provide insights into fruit shading that enhances carotenoid accumulation in pomelo(Citrus grandis)

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Horticultural Plant Journal 2022年第4期8卷 423-434页

作者： Qihang Jiang Junli Ye Kaijie Zhu fangfang Wu Lijun Chai Qiang Xu Xiuxin deng Key Laboratory of Horticultural Plant Biology of MOE(Ministry of Education) Huazhong Agricultural UniversityWuhan 430070China The Agricultural Bureau of Guangfeng County Jiangxi ProvinceShangrao 334600China

Carotenoids are indispensable for human health,and citrus fruit are a crucial source of dietary carotenoids.Bagging,an important orchard practice to enhance fruit economic value,is widely used in many horticultural crops,including citrus fruit.The bagged‘Majiayou’pomelo(Citrus grandis)produces vivid deeper red pulp,a fantastic agronomic trait,but the underlying molecular regulatory mechanism remains largely unexplored.Here,the enhancement of carotenoids,especially lycopene,was confirmed by HPLC analysis of carotenoids in the pulp of bagged fruit and controls.qRT-PCR analysis of the 14 carotenoid pathway genes further revealed that upregulated PSY and downregulated CCD1 expression in bagged fruit could directly enhance the accumulation of carotenoids.In addition,RNA-seq analysis identified 311 differentially expressed genes(DEGs)in the bagged fruit and controls in five developmental stages.Weighted gene co-expression network analysis(WGCNA)identified 13 critical candidate genes among the DEGs,which are closely associated with lycopene accumulation.The underlying regulatory mechanism of these candidate genes on the transcription of carotenoid pathway genes in the bagged fruit was discussed.Considering that the candidate genes were involved in the corresponding metabolic pathways,the increase in sucrose content and decrease in ABA in bagged fruit were also identified,implying that these candidate genes may be indirectly related to carotenoid enhancement in pulp by regulating phytohormones,primary metabolism,and stress responses.The results provide new insights into the potential regulatory mechanism of lycopene enhancement in the pulp of bagged‘Majiayou’pomelo,facilitating breeding and orchard management efforts to improve the nutritional quality and esthetic value of citrus,and perhaps other fruit crops.

关键词： Citrus Carotenoid RNA-seq Shading ABA

Key factors governing alkaline pretreatment of waste activated sludge

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Chinese Journal of Chemical Engineering 2015年第5期23卷 842-846页

作者： Xianli Shi Li deng fangfang Sun Jieyu Liang Xu deng College of Life Sciences Shenzhen Key Laboratory of Marine Bioresources and Ecology Shenzhen University

Alkaline pretreatment is an effective technology to disintegrate sewage sludge, where alkali dosage and sludge concentration are two important factors. p H value or alkali concentration is usually adjusted in order to determine a proper dosage of alkali. Our work has found that this is not a good strategy. A new parameter, the ratio of alkali to sludge(Ra/s), is more sensitive in controlling the alkali dosage. The sludge concentration Csand retention time t are two other important factors to consider. The validity of these arguments is confirmed with modeling and experiments. The individual effect of Ra/s, Csand t was studied separately. Then the combined effect of these three factors was evaluated. The sludge disintegration degree of 44.7% was achieved with the optimized factors. Furthermore, an alkaline-microwave combined pretreatment process was carried out under these optimized conditions. A high disintegration degree of 62.3% was achieved while the energy consumption of microwave was much lower than previously reported.

关键词：废活性污泥碱预处理碱性预处理污泥浓度预处理工艺污水污泥保留时间碱用量

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营商环境优化对企业创新效率的影响研究

系统工程理论与实践 2022年第6期42卷 1601-1615页

作者：王磊景诗龙邓芳芳浙江财经大学中国政府管制研究院杭州310018 浙江财经大学数量经济研究中心杭州310018 浙江水利水电学院经济与管理学院杭州310018

利用世界银行发布的中国营商环境报告,构建30个重点城市的营商环境优化指数,通过与中国工业企业数据库相匹配,基于中介效应模型分析营商环境优化对企业创新效率的影响及其作用机制.研究发现:营商环境优化显著促进企业创新效率提升,其通... 详细信息

利用世界银行发布的中国营商环境报告,构建30个重点城市的营商环境优化指数,通过与中国工业企业数据库相匹配,基于中介效应模型分析营商环境优化对企业创新效率的影响及其作用机制.研究发现:营商环境优化显著促进企业创新效率提升,其通过降低企业层面的制度性交易成本、促进行业层面的市场竞争、以及改善城市层面的要素资源配置的中介机制实现,而且要素资源配置中介效应大于市场竞争和制度性交易成本中介效应.异质性分析表明,营商环境优化对非国有企业创新效率的影响大于国有企业,对所属资本密集型和高新技术行业企业的影响大于劳动密集型行业,对沿海地区企业的影响大于内陆地区.

关键词：营商环境优化企业创新效率中介效应分析市场活力

Advances in Phase Detection Technique of Surface Plasmon Resonance Biosensor

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稀有金属材料与工程 2006年第A03期35卷 299-304页

作者： Yu Xinglong Wei Xing deng Yan Liu fangfang Dept. of Precision Instruments Tsinghua University Beijing 100084 China

Surface plasmon resonance (SPR) sensing is an optical method based on evanescent wave.SPR biosensor can detect interaction of label-free biomolecules in real-time.With further development,it can become a research instrument in proteomics.SPR biosensor can be divided intensity measurement and phase measurement,and the latter possesses higher sensitivity than the former one.This paper attempts to summarize the SPR phase detection theory,discuss the major developments,compare the merits and deficiencies of various methods,and look forward to future prospects.

关键词： surface plasmon resonance(SPR) phase detection ellipsometry heterodyne interferometry

舒芬太尼与芬太尼椎管内用药应用于分娩镇痛的效果比较

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临床医学 2019年第10期39卷 12-14页

作者：邓方方湖北省武汉市第一医院麻醉科

目的探讨舒芬太尼、芬太尼椎管内用药应用于分娩镇痛的效果。方法选取2017年11月至2018年5月待产妇88例为研究对象,根据产妇入院先后顺序编号,并将其随机分为对照组与观察组,每组44例。对照组应用芬太尼,观察组应用舒芬太尼,比较两组镇... 详细信息

目的探讨舒芬太尼、芬太尼椎管内用药应用于分娩镇痛的效果。方法选取2017年11月至2018年5月待产妇88例为研究对象,根据产妇入院先后顺序编号,并将其随机分为对照组与观察组,每组44例。对照组应用芬太尼,观察组应用舒芬太尼,比较两组镇痛效果、产妇满意度。结果观察组产妇在用药后5 min、1.5 h时期VAS评分显著低于对照组(P0.05)。观察组患者首次加药时间明显长于对照组(P<0.05),观察组产妇镇痛满意度明显高于对照组(P<0.05)。结论与芬太尼比较,舒芬太尼实施腰硬联合麻醉镇痛效果更佳,产妇对镇痛效果满意度更高,该药物可在临床分娩镇痛中推广使用。

关键词：芬太尼舒芬太尼分娩镇痛应用效果

Functionalization design of zinc anode for advanced aqueous zinc-ion batteries

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SusMat 2024年第2期4卷 89-124页

作者： Ziyi Feng Yang Feng fangfang Fan Dezhao deng Han Dong Shude Liu Ling Kang Seong Chan Jun Ling Wang Jing Zhu Lei Dai Zhangxing He School of Chemical Engineering North China University of Science and TechnologyTangshanChina State Key Laboratory of Advanced Chemical Power Sources College of ChemistryNankai UniversityTianjinChina Shanghai Frontiers Science Center of Advanced Textiles College of TextilesDonghua UniversityShanghaiChina Shanghai Key Laboratory of Multidimensional Information Processing East China Normal UniversityShanghaiChina School of Mechanical Engineering Yonsei UniversitySeoulSouth Korea

Rechargeable aqueous zinc-ion batteries(AZIBs)offer high energy density,low cost,and are environmentally friendly,rendering them potential energy storage devices.However,dendrite growth on the zinc anode and numerous side reac-tions during operation challenge their commercialization.Recent advancements have introduced various materials for the functionalization of zinc anodes.These developments effectively mitigate the performance degradation of zinc anode,enhancing both its cycle stability and the overall performance of AZIBs.Herein,the construction of functionalized zinc anodes is discussed,current materials(including organic,inorganic and their composites)for modified zinc anodes are categorized,and the protective mechanism behind functionalized zinc anodes is analyzed.The study concludes by outlining the characteristics of materials suitable for dendritic-free zinc anode construction and the prospects for future development directions of functionalized zinc anodes in AZIBs.

关键词： anode functionalization inorganic materials organic materials zinc-ion batteries

人工智能对中国制造业创新的影响研究——来自工业机器人应用的证据

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财经论丛 2023年第9期 14-24页

作者：王磊肖倩邓芳芳常州大学经济学院江苏常州213159 浙江财经大学中国政府管制研究院浙江杭州310018 浙江水利水电学院经济与管理学院浙江杭州310018

本文基于人工智能应用引致的要素增益技术变迁效应、劳动力替代效应、知识溢出效应分析其对制造业创新的影响机理,通过匹配IFR的工业机器人与中国制造业专利申请的数据,实证分析人工智能对制造业创新的影响及其作用机制。研究发现,工业... 详细信息

本文基于人工智能应用引致的要素增益技术变迁效应、劳动力替代效应、知识溢出效应分析其对制造业创新的影响机理,通过匹配IFR的工业机器人与中国制造业专利申请的数据,实证分析人工智能对制造业创新的影响及其作用机制。研究发现,工业机器人的应用显著促进中国制造业创新,对资本密集型行业和高新技术行业创新影响的边际效应大于劳动密集型行业,对企业实质性创新的影响大于策略性创新。机制分析表明,工业机器人应用通过增加R&D人员全时当量、扩大对高技能和高学历人员的需求、提高R&D经费支出等方式促进制造业创新。上述研究结论为激发企业自主创新、实现科技自立自强的创新驱动发展战略提供可能的路径选择。

关键词：人工智能创新工业机器人中国制造业