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Nano Research 2023年第1期16卷 371-376页

作者： Juhua Luo ziyang dai Mengna Feng Mingmin Gu Yu Xie School of Materials Science and Engineering Yancheng Institute of TechnologyYancheng 224051China School of Environmental and Chemical Engineering Nanchang Hangkong UniversityNanchang 330063China

High stability and efficient charge separation are two critical factors to construct high-performance photocatalysts.Here,an efficient strategy was provided to fabricate the nanocomposite of graphitic carbon nitride/ferroferric oxide/reduced graphene oxide(g-C_(3)N_(4)/Fe_(3)O_(4)/RGO).The degradation of rhodamine B(RhB)by g-C_(3)N_(4)/Fe_(3)O_(4)/RGO nanocomposite followed the pseudofirst-order kinetics.The g-C_(3)N_(4)/Fe_(3)O_(4)/RGO nanocomposite exhibited excellent stability and magnetically separable performance.It was ascertained that the quantum efficiency and separation efficiency of photoexcited charge carriers of g-C_(3)N_(4)/Fe_(3)O_(4)/RGO nanocomposite were obviously improved.Particularly,the g-C_(3)N_(4)/Fe_(3)O_(4)/RGO nanocomposite with 3 wt.%RGO presented 100%degradation efficiency under visible light irradiation for 75 min.The remarkable photocatalytic degradation activity is attributed to the synergistic interactions among g-C_(3)N_(4),Fe_(3)O_(4),and RGO,along with the efficient interfacial charge separation.

关键词： graphitic carbon nitride ferroferric oxide reduced graphene oxide visible light photocatalyst

Hierarchically porous carbon derived from natural Porphyra for excellent electromagnetic wave absorption

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Journal of Materials Science & Technology 2022年第34期129卷 206-214页

作者： Juhua Luo ziyang dai Mengna Feng Xiaowen Chen Caihong Sun Ying Xu School of Materials Science and Engineering Yancheng Institute of TechnologyYancheng 224051China National and Local Joint Engineering Research Center for Mineral Salt Deep Utilization Huaiyin Institute of TechnologyHuaiyin 223003China

A highly efficient absorber with features including lightweight, broad bandwidth, and tunable electromagnetic property still remains challenging for practical applications. Herein, the Porphyra-derived porous carbon(PPC) was fabricated via facile procedures of low-temperature pre-carbonization combined with KOH chemical activation. The composition, microstructure, and electromagnetic wave absorption properties of the samples were elucidated based on X-ray diffraction(XRD), Raman, X-ray photoelectron spectroscopy(XPS), scanning electron microscopy(SEM), transmission electron microscopy(TEM),Brunauer-Emmer-Teller(BET), and vector network analyzer(VNA). The porosity of PPC can be readily regulated by adjusting activation temperature. The PPC obtained at 750 ℃ was composed of a threedimensional hierarchically porous carbon network. The C and N elements of natural Porphyra were introduced into the carbon skeleton during the carbonization process. The large specific surface, dopants, and three-dimensional hierarchically porous carbon network can effectively improve the impedance matching and dielectric dissipation, leading to an excellent electromagnetic wave absorption performance. Especially, the optimal reflection loss(RL) value reached –57.75 d B at 9.68 GHz with a broad bandwidth(RL< –10 d B) value of 7.60 GHz at 3.5 mm. Overall, the results indicate that the PPC can provide a new way to achieve lightweight, effective, and sustainable absorbers.

关键词： Porphyra-derived carbon Hierarchically porosity Electromagnetic wave absorption Broad bandwidth Lightweight

MoS_(2) wrapped MOF-derived N-doped carbon nanocomposite with wideband electromagnetic wave absorption

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Nano Research 2022年第7期15卷 5781-5789页

作者： Juhua Luo Mengna Feng ziyang dai Chenye Jiang Wei Yao Naixin Zhai School of Materials Science and Engineering Yancheng Institute of TechnologyYancheng 224051China

Designing electromagnetic wave absorption(EMWA)materials with wide bandwidth,strong absorption,and light weight is still a great challenge for practical applications.Herein,the novel nitrogen doped carbon(NDC)/MoS_(2) composite with rationally designed composition and structure was developed.The NDC particles were introduced into MoS_(2) nanosheets through the calcination of ZIF-8 precursor and consequent hydrothermal process.A series of characterizations were carried out to investigate the physical properties of the as-prepared nanocomposites.The NDC particles exhibited the shape of rhombic dodecahedron with the size of about 500 nm,which were decorated on flower-shaped MoS_(2) with the size of about 3μm.With the increasing NDC content,the absorbing properties of NDC/MoS_(2) composites increased firstly and then decreased.The features of NDC/MoS_(2) composite including interconnected porous structure,nitrogen dopant,and appropriate electrical conductivity gave rise to the polarization,multiple reflection,multiple scattering,and impedance matching,resulting in the outstanding EMWA performance.With a filler loading ratio of 30 wt.%,the optimized EMWA property can be achieved when the mass ratio of NDC to MoS_(2) was adjusted to be 1:1.At a coating thickness of 3.0 mm,the effective EMWA bandwidth(<−10 dB)reached 6.08 GHz(8.56–14.64 GHz).These satisfactory achievements provide a way for the reasonable design of high-performance EMWA and new ideas for future research on wideband EMWA.

关键词： metal organic framework materials nitrogen doped carbon molybdenum disulfide wideband absorption

Extraction of lacunarity variation index for revealing the slope pattern in the Loess Plateau of China

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Frontiers of Earth Science 2021年第1期15卷 94-105页

作者： ziyang dai Fayuan LI Mingwei ZHAO Lanhua LUO Haoyang JIAO School of Geography Nanjing Normal UniversityNanjing 210023China Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application Nanjing 210023China Key Laboratory of Virtual Geographic Environment(Ministry of Education) Nanjing Normal UniversityNanjing 210023China Department of Land Information Engineering Chuzhou UniversityChuzhou 239000China

Lacunarity analysis is frequently used in multiscale and spatial pattern studies.However,the explanation for the lacunarity analysis results is limited mainly at a qualitative description level.In other words,this approach can be used to judge whether the spatial pattern of the objective is regular,random or aggregated in space.The lacunarity analysis,however,cannot afford many quantitative information.Therefore,this study proposed the lacunarity variation index(LVI)to reflect the rates of variation of lacunarity with the resolution.In comparison with lacunarity analysis,the simulated experiments show that the LVI analysis can distinguish the basic spatial pattern of the geography objects more clearly and detect the scale of aggregated data.The experiment showed that different slope types in the Loess Plateau display aggregated patterns,and the characteristic scales of these patterns were detected using the slope pattern in the Loess Plateau as the research data.This study can improve the spatial pattern analysis and scale detecting methods,as well as provide a new method for landscape and vegetation community pattern analyses.Lacunarity analysis is frequently used in multiscale and spatial pattern studies.However,the explanation for the lacunarity analysis results is limited mainly at a qualitative description level.In other words,this approach can be used to judge whether the spatial pattern of the objective is regular,random or aggregated in space.The lacunarity analysis,however,cannot afford many quantitative information.Therefore,this study proposed the lacunarity variation index(LVI)to reflect the rates of variation of lacunarity with the resolution.In comparison with lacunarity analysis,the simulated experiments show that the LVI analysis can distinguish the basic spatial pattern of the geography objects more clearly and detect the scale of aggregated data.The experiment showed that different slope types in the Loess Plateau display aggregated patterns,and the characteristic scales of these patterns were d

关键词： lacunarity variation index(LVI) slope pattern characteristic scale the Loess Plateau digital elevation model(DEM)

Facile one-pot synthesis of NiCo2O4 hollow spheres with controllable number of shells for high-performance supercapacitors

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Nano Research 2017年第2期10卷 405-414页

作者： Jing Guo Zhihui Yin Xiaoxian Zang ziyang dai, Yizhou Zhang Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Centerfor Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 China

在这个工作，轰炸单人赛并且双 shelled NiCo 2 O 4 空范围被木糖帮助的一个一个壶 solvothermal 方法在 situ 综合了，由热处理列在后面。作为 supercapacitor 电极材料采用了，双 shelled NiCo 2 空范围展出的 O 4 一个显著特定的电容... 详细信息

在这个工作，轰炸单人赛并且双 shelled NiCo 2 O 4 空范围被木糖帮助的一个一个壶 solvothermal 方法在 situ 综合了，由热处理列在后面。作为 supercapacitor 电极材料采用了，双 shelled NiCo 2 空范围展出的 O 4 一个显著特定的电容(1,204.4 F 漠 ? 牰獯桴瑥捩朠潲灵吗？

关键词： NiCo 2 O 4 空范围壳的控制数字 supercapacitor

Controllable synthesis of triangular Ni（HCO3）2 nanosheets for supercapacitor

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Nano Research 2016年第5期9卷 1358-1365页

作者： Xiaoxian Zang ziyang dai Jing Guo Qiuchun Dong Jun Yang Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) Nanjing 211816 China

Triangular Ni（HCO3）2 nanosheets were synthesized via a template-free solvothermal method. The phase transition and formation mechanism were explored systematically. Further investigation indicated that the reaction time and pH have significant effects on the morphology and size distribution of the triangular Ni（HCO3）2 nanosheets. More interestingly, the resulting product had an ultra-thin structure and high specific surface area, which can effectively accelerate the charge transport during charge--discharge processes. As a result, the triangular Ni（HCO3）2 nanosheets not only exhibited high specific capacitance （1,797 F·g^-1 at 5 A·g^-1 and 1,060 F·g^-1 at 50 A·g^-1）, but also showed excellent cycling stability with a high current density （-80% capacitance retention after 5,000 cycles at the current density of 20 A·g^-1）.

关键词： nickel bicarbonate,nanosheets,anodes,supercapacitor

Graphene as an intermediary for enhancing the electron transfer rate： A free-standing Ni3S2@graphene@CogSs electrocatalytic electrode for oxygen evolution reaction

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Nano Research 2018年第3期11卷 1389-1398页

作者： Qiuchun Dong Yizhou Zhang ziyang dai Peng Wang Min Zhao Jinjun Shao Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanjingTech) 30 South Puzhu Road Nanjing 211816 China

A highly active and stable oxygen evolution reaction （OER） electrocatalyst is critical for hydrogen production from water splitting. Herein, three-dimensional Ni3Sa@graphene@Co9S8 （Ni3S2@G@Co9S8）, a sandwich- structured OER electro-catalyst, was grown in situ on nickel foam; it afforded an enhanced catalytic performance when highly conductive graphene is introduced as an intermediary for enhancing the electron transfer rate and stability. Serving as a free-standing electrocatalytic electrode, Ni3S2@G@Co9S8 presents excellent electrocatalytic activities for OER： A low onset overpotential （2 mA·cm^-2 at 174 mV）, large anode current density （10 mA·cm^-2 at an overpotential of 210 mV）, low Tafel slope （66 mV·dec^-1）, and predominant durability of over 96 h （releasing a current density of N 14 mA·cm^-2 with a low and constant overpotential of 215 mV） in a 1 M KOH solution. This work provides a promising, cost-efficient electrocatalyst and sheds new light on improving the electrochemical performance of composites through enhancing the electron transfer rate and stability by introducing graphene as an intermediary.

关键词： three-dimensional,graphene,Ni3S2@G@Co9S8,oxygen evolution reaction

Metal-organic framework derived CoSe2 nanoparticles anchored on carbon fibers as bifunctional electrocatalysts for efficient overall water splitting

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Nano Research 2016年第8期9卷 2234-2243页

作者： Chencheng Sun Qiuchun Dong Jun Yang ziyang dai Jianjian Lin Peng Chen Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (NanfingTech) 30 South Puzhu Road Nanjing 211816 China School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive 637459 Singapore Singapore

The development of efficient, low-cost, for water splitting, particularly those stable, non-noble-metal electrocatalysts that can catalyze both the hydrogen evolution reaction （HER） at the cathode and oxygen evolution reaction （OER） at the anode, is a challenge. We have developed a facile method for synthesizing CoSe2 nanoparticles uniformly anchored on carbon fiber paper （CoSe2/CF） via pyrolysis and selenization of in situ grown zeolitic imidazolate framework-67 （ZIF-67）. CoSe2/CF shows high and stable catalytic activity in both the HER and OER in alkaline solution. At a low cell potential, i.e., 1.63 V, a water electrolyzer equipped with two CoSe2/CF electrodes gave a water-splitting current of 10 mA.cm-2. At a current of 20 mA-cm-2, it can operate without degradation for 30 h. This study not only offers a cost-effective solution for water splitting but also provides a new strategy for developing various catalytic nanostructures by changing the metal-organic framework precursors.

关键词： metal-organic framework,cobalt selenide,electrocatalyst,overall water splitting

Nanowires assembled from MnCo2O4@C nanoparticles for water splitting and all-solid-state supercapacitor

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Nano Research 2016年第5期9卷 1300-1309页

作者： Chencheng Sun Jun Yang ziyang dai Xuewan Wang Yufei Zhang Laiquan Li Peng Chen Wei Huang Xiaochen Dong Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM) Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) Nanjing Tech University (Nanjing Tech) 30 South Puzhu Road Nanjing 211816 China School of Chemical and Biomedical Engineering Nanyang Technological University 62 Nanyang Drive 637459 Singapore

The rational design of earth-abundant catalysts with excellent water splitting activities is important to obtain clean fuels for sustainable energy devices. In this study, mixed transition metal oxide nanoparticles encapsulated in nitrogendoped carbon （denoted as AB2O4@NC） were developed using a one-pot protocol, wherein a metal-organic complex was adopted as the precursor. As a proof of concept, MnCo2O4@NC was used as an electrocatalyst for water oxidation, and demonstrated an outstanding electrocatalytic activity with low overpotential to achieve a current density of 10 mA·cm^-1 0/10 = 287 mV）, small Tafel slope （55 mV·dec^-1）, and high stability （96% retention after 20 h）. The excellent electrochemical performance benefited from the synergistic effects of the MnCo2O4 nanoparticles and nitrogen-doped carbon, as well as the assembled mesoporous nanowire structure. Finally, a highly stable all-solid-state supercapacitor based on MnCo2O4@NC was demonstrated （1.5% decay after 10,000 cycles）.

关键词： transition metal oxide,nitrogen doped carbon,oxygen evolution,supercapacitor

课程思政融入中西医结合内科学混合式教学的探索

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中国中医药现代远程教育 2024年第8期22卷 33-35页

作者：丁培杰常宏先小乐代紫阳华北理工大学中医学院河北唐山063210

课程思政是高校立德树人的重要举措,如何做到将思政内容与专业知识自然和谐的融合,是医学专业课教学面临的难题之一。中西医结合内科学作为重要的中西医临床专业课程,是思政教育的前沿阵地。文章从中西医结合内科学德育目标设计、课程... 详细信息

课程思政是高校立德树人的重要举措,如何做到将思政内容与专业知识自然和谐的融合,是医学专业课教学面临的难题之一。中西医结合内科学作为重要的中西医临床专业课程,是思政教育的前沿阵地。文章从中西医结合内科学德育目标设计、课程思政元素的挖掘、课程思政素材库的建设、混合式教学过程中课程思政元素的融入以及课程思政育人效果的评价等几方面进行研究,探索课程思政融入中西医结合内科学混合式教学的方法和路径,以期推动中西医临床课程思政的建设。

关键词：课程思政中西医结合内科学混合式教学