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Ultrafast room-temperature reduction of graphene oxide by sodium borohydride,sodium molybdate and hydrochloric acid

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Chinese Chemical Letters 2021年第1期32卷 543-547页

作者： Jun Hu Gang Kong yanbin zhu Chunshan Che School of Materials Science and Engineering South China University of TechnologyGuangzhou 510641China

Since graphene-based materials have shown great potential in many fields,it is important to explore ultrafast and high-efficient methods to synthesize reduced graphene oxide(rGO) using inexpensive reducing agents under mild ***,we reported a novel method for the ultrafast chemical reduction of graphene oxide(GO) at room temperature using sodium borohydride(NaBH_(4)),sodium molybdate(Na_(2)MoO_(4)) and hydrochloric acid(HCl).The reduction was carried out within 2 min.A series of characterization results revealed that the obtained reduced graphene oxide has higher reduction degree than that synthesized by NaBH_(4) alone at high ***,rGO electrode based on the present reducing method exhibited a superior specific capacitance of 139.8 F/g at a current density of1 A/g,indicating that it can be used as electrode materials for supercapacitors.

关键词： Carbon materials Reduced graphene oxide Sodium borohydride Sodium molybdate Hydrochloric acid Supercapacitors

Pd/N-doped carbon dots@dendritic mesoporous silica nanospheres:A highly efficient catalyst for the hydrogenation of 4-nitrophenol

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Nano Research 2024年第9期17卷 7967-7974页

作者： Weiruo Liu yanbin zhu Jiwei Wang Haisong Feng Yunpu Zhai Wei Li Dongyuan Zhao College of Chemistry Zhengzhou University100 Kexue AvenueZhengzhou 450001China Department of Chemistry Laboratory of Advanced MaterialsShanghai Key Laboratory of Molecular Catalysis and Innovative Materialsand State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China State Key Laboratory of Chemical Resource Engineering Beijing Advanced Innovation Center for Soft Matter Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China

Highly dispersed Pd/N-doped carbon dots(Pd/NCDs)were successfully immobilized in the mesoporous channels of amino-functionalized dendritic mesoporous silica nanospheres(NMS).The synthesized Pd/NCDs@NMS catalyst exhibits outstanding performance in the catalytic reduction of 4-nitrophenol(4-NP),achieving a turnover frequency of 1461.8 mol·molPd^(-1)·h^(-1),with the conversion rate remaining above 80%after 11 *** and density functional theory calculations reveal that the NCDs significantly affect the electronic structure of Pd nanoparticles,leading to changes in the energy barriers for the adsorption of 4-NP at the Pd sites and the conversion of 4-NP reaction intermediates,which is a key factor contributing to the catalytic *** study offers a new strategy for synthesizing carbon-dot-modified metal-based catalysts.

关键词： palladium nanoparticles nitrogen-doped carbon dots dendritic mesoporous silica catalytic hydrogenation 4-nitrophenol reduction

Research on power control strategy of household-level electric power router based on hybrid energy storage droop control

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Protection and Control of Modern Power Systems 2021年第1期6卷 178-190页

作者： Kun Huang Yanman Li Xiaoyan Zhang Lei Liu yanbin zhu Xin Meng NARI Technology Development Co. LtdNo.19Chengxin AvenueJiangning DistrictNanjing CityJiangsu ProvinceChina Nari Group Corporation/State Grid Electric Power Research Institute No.19Chengxin AvenueJiangning DistrictNanjing CityJiangsu ProvinceChina School of Physics University of OxfordOxfordOX13RHUK Key Laboratory of Smart Grid of Ministry of Education Tianjin UniversityTianjin300072China

In the light of user-side energy power control requirements, a power control strategy for a household-level EPR based on HES droop control is proposed, focusing on the on-grid, off-grid and seamless switching process. The system operating states are divided based on the DC bus voltage information with one converter used as a slack terminal to stabilize the DC bus voltage and the other converters as power terminals. In the on-grid mode, the GCC and the HES are used as the main control unit to achieve on-grid stable operation, whereas in the off-grid mode, the PV, HES and LC are used as the main control unit at different voltages to achieve stable operation of the island network. Finally, a DC MG system based on a household-level EPR is developed using the PSCAD / EMTDC simulation platform and the results show that the control strategy can effectively adjust the output of each subunit and maintain the stability of the DC bus voltage.

关键词： Household-level electric power router Hybrid energy storage Droop control On-grid mode Off-grid mode

An improved Hummers method to synthesize graphene oxide using much less concentrated sulfuric acid

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Chinese Chemical Letters 2022年第10期33卷 4541-4544页

作者： yanbin zhu Gang Kong Yuling Pan Lian Liu Bo Yang Shuanghong Zhang Delin Lai Chunshan Che School of Materials Science and Engineering South China University of TechnologyGuangzhou 510641China Guangzhou Special Pressure Equipment Inspection and Research Institute Guangzhou 510663China

The production of graphene oxide with less acid is beneficial to reduce the costs and lower the impact on the environment,but it is still a great *** this work,a relatively simple,safe method for synthesizing graphene oxide with much less acid(decrease∼40%)is *** assistance of the heat absorbed from environment and reaction system,the temperature of reaction system of low acid can be well *** interestingly,the graphite can be completely oxidized into graphite oxide by using much less acid,with lowering the production of high-concentration aqueous waste acid(>1 mol/L,decrease∼40%).A series of characterizations show that the prepared graphene oxide has similar yield and functional groups compared with that of using the conventional *** work provides a safe and environmentally friendly choice for the large-scale production of graphene oxide and its derivative materials.

关键词： Graphene oxide Carbon materials Oxidation Low acid Hummers method

The　photon　theory　hypothesis　about　photon　tunneling　microscope＇s　subwavelength　resolution

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光电子·激光 1996年第4期7卷 236-239+259页

作者： yanbin zhu Junfu Ma(Laser Li fe Science Institute, South China Normal University, Guangzhou 510631,P.R.China) 华南师范大学激光生命科学所广东广州

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关键词： tunneling hypothesis microscope about resolution subwavelength theory The photon

Strain Pseudomonas putida PAO-1 Isolate with Polyphosphate Accumulating and Elongation Ability

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Journal of Donghua University(English Edition) 2021年第6期38卷 539-548页

作者： DONG Xuetong TIAN Qing zhu yanbin LI Fang YANG Bo LIU Yanbiao College of Environmental Science and Engineering Donghua University Shanghai 201620 China

Filamentous bacteria(FB)overgrowth is an important cause of sludge bulking in wastewater treatment plants(WWTPs).However,to date,methods for the cultivation and preservation of isolated FB in the laboratory have not been completely ***,research on whether FB can function as phosphorus accumulating organisms(PAOs)is *** this study,a pure strain,a Pseudomonas putida PAO-1(*** PAO-1)isolate with phosphorus removal functions was isolated from the biofilm of an alternating anaerobic/aerobic biofilter(AABF),and its physiological characteristics were *** or nitrite could be used by the strain *** PAO-1 as electron acceptors for denitrification during phosphorus anoxic uptake,and 0.63 mg NO-3-N was consumed to reduce 1 mg soluble orthophosphate(SOP)by *** *** strain *** PAO-1 consumed phosphorus within the optimal pH range of 6 to 8 and the temperature range of 25℃to 35℃.Cell deformity was a main morphological trait of the strain *** PAO-1,and it could elongate(with an elongation rate of 300%-500%)when it was subjected to oligotrophic or high-salt stress(15 g·L-1 NaCl).The findings in this study provide a microbiological reference for understanding the special characteristics of a denitrifying PAO.

关键词： Pseudomonas putida PAO-1 isolate(P.putida PAO-1) elongation acclimation denitrification phosphorus accumulating organism(PAO)

Study on the SiN_x/Al rear reflectance performance of crystalline silicon solar cells

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Science China(Technological Sciences) 2010年第12期53卷 3209-3213页

作者： LIANG ZongCun, CHEN DaMing, zhu yanbin & SHEN Hui Institute for Solar Energy Systems, State Key Laboratory of Optoelectronic Materials and Technologies, Sun Yat-Sen University, Guangzhou 510275, China Institute for Solar Energy Systems State Key Laboratory of Optoelectronic Materials and Technologies Sun Yat-Sen University Guangzhou China

The performance of internal rear surface reflectance of crystalline silicon solar cells is becoming more and more important with the decrease of thickness of the silicon wafers. In this paper PC1D was used to simulate the correlations between the rear surface reflectance and the electrical as well as optical properties of the solar cells. The results showed that the short circuit current, open circuit voltage and quantum efficiency were all enhanced with the increase of the rear reflectance. When the rear reflectance increased from 60% to 100%, the short circuit current, open circuit voltage and maximum output power were improved by about 0.128 A, 0.007 V, and 0.066 W, respectively. The internal quantum efficiency was improved by 39.9%, the external quantum increased by 17.4%, and the efficiency of the solar cells was enhanced by 0.4% at 1100 nm wavelength. The screen-printing was selected to prepare SiNx/Al reflector, and experimental results showed that the SiNx/Al reflector has desired characteristic of internal rear reflectance, with the reflectivity of 15% higher than that of conventional aluminum BSF at 1100 nm wavelength.

关键词： crystalline silicon solar cells rear reflectance PC1D simulation rear reflector

Ammonia-induced CuO/13X for H_(2)S removal from simulated blast furnace gas at low temperature

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Green Energy & Environment 2025年第1期10卷 139-149页

作者： Erping Cao Yuhua Zheng Hao Zhang Jianshan Wang Yuran Li Tingyu zhu Zhan-guo Zhang Guangwen Xu yanbin Cui State Key Laboratory of Mesoscience and Engineering Institute of Process EngineeringChinese Academy of SciencesBeijing100190China State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization PanGang Group Research Institute Co.Ltd.Panzhihua Sichuan617000China Shenyang University of Chemical Technology Shenyang110142China University of Chinese Academy of Sciences Beijing 100049China

Blast furnace gas(BFG)is an important by-product energy for the iron and steel industry and has been widely used for heating or electricity ***,the undesirable contaminants in BFG(especially H_(2)S)generate harmful environmental *** desulfurization of BFG is urgent for integrated steel plants due to the stringent ultra-low emission *** with other desulfurization materials,zeolite-based adsorbents represent a viable option with low costs and long service *** this study,an ammonia-induced CuO modified 13X adsorbent(NH3–CuO/13X)was prepared for H_(2)S removal from simulated BFG at low *** XRD,H_(2)-TPR and TEM analysis proved that smaller CuO particles were formed and the dispersion of Cu on the surface of 13X zeolite was improved via the induction of *** on H_(2)S adsorption performance of the adsorbent was carried out using simulated BFG,and the results showed that NH3–CuO/13X-3 has better breakthrough sulfur capacity,which was more than twice the sulfur capacity of CuO/*** is proposed that the enhanced desulfurization performance of NH3–CuO/13X is attributed to an abundant pore of 13X,and combined action of 13X and *** work provided an effective way to improve the sulfur capacity of zeolite-based adsorbents via impregnation method by ammonia induction.

关键词： Blast furnace gas Desulfurization Ammonia-induced CuO 13X zeolite

中国新能源汽车企业何以实现颠覆性技术创新——资源行动与动态能力的交互效应

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科技进步与对策 2024年第18期41卷 87-97页

作者：杨瑾朱焱斌西北工业大学公共政策与管理学院陕西西安710072

颠覆性技术创新对我国战略性新兴企业突破国外技术封锁,进而实现关键核心技术自主可控具有重要战略意义。基于5家中国新能源汽车代表性企业颠覆性技术创新实践,构建新能源汽车企业颠覆性技术创新过程与机理模型,揭示资源行动与动态能力... 详细信息

颠覆性技术创新对我国战略性新兴企业突破国外技术封锁,进而实现关键核心技术自主可控具有重要战略意义。基于5家中国新能源汽车代表性企业颠覆性技术创新实践,构建新能源汽车企业颠覆性技术创新过程与机理模型,揭示资源行动与动态能力交互效应对颠覆性技术创新的作用机理。结果发现:中国新能源汽车企业颠覆性技术创新呈现利基市场开发—中高端市场渗透—高端市场导入的动态演化规律;企业通过资源拼凑—资源编排—资源协奏的资源行动逐步实现资源组合化、能力化和杠杆化;企业动态能力经历了外部导向的环境感知能力—内部驱动的学习创新能力—内外部协同的整合拓展能力演进过程,由适应环境的一阶能力升级为创造新能力的二阶能力;企业资源行动与动态能力的交互作用经历了要素聚合—知识赋新—系统共生3次跃迁,对企业颠覆性技术创新发挥引领作用。结论可为推动中国新能源汽车企业颠覆性技术创新提供理论指导和实践支撑。

关键词：新能源汽车企业颠覆性技术创新资源行动动态能力