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Anchoring CoP nanoparticles on the octahedral CoO by self-phosphating for enhanced photocatalytic overall water splitting activity under visible light

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Chinese Journal of Chemical Engineering 2021年第12期34卷 114-123页

作者： Feng Guo Xiliu Huang Zhihao Chen Haoran Sun Lizhuang chen School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China

Designing an effective and stable composite photocatalyst is of significance for the further realization of practical applications. In this study, a series of CoP/CoO composites are successfully prepared by a straight one-step phosphating method. The reasonable design and controllable preparation of CoP/CoO composite make it exhibit improved photocatalytic performance for overall water splitting and excellent stability under visible light irradiation in comparison with pure CoO, which is derived from the CoP nanoparticles well dispersed on the(111) facets of CoO octahedrons, intimate interface between them and efficiently accelerated of photo-induced electrons from CoO to CoP. This study presents a simple method to design highly-effective composite photocatalysts for overall water splitting to meet the energy demand.

关键词： CoP nanoparticles CoO octahedrons Overall water splitting Catalyst Photochemistry Solar energy

Ternary Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)composite with Z-scheme electron transfer path for enhanced removal broad-spectrum antibiotics by the synergistic effect of adsorption and photocatalysis

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Chinese Journal of Chemical Engineering 2022年第4期35卷 157-168页

作者： Feng Guo Zhihao Chen Xiliu Huang Longwen Cao Xiaofang cheng Weilong Shi Lizhuang chen School of Energy and Power Jiangsu University of Science and TechnologyZhenjiang 212003China School of Environmental and Chemical Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China School of Material Science and Engineering Jiangsu University of Science and TechnologyZhenjiang 212003China College of Chemistry Zhengzhou UniversityZhengzhou 450001China

Constructing the stable,low-cost,efficient,and highly adaptable visible light-driven photocatalyst to implement the synergistic effect of photocatalysis and adsorption has been excavated a promising strategy to deal with antibiotic pollution in water bodies.Herein,a novel 3 D ternary Z-scheme heterojunction photocatalyst Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4)(Ni_(2)P/BMO/CN)was fabricated by a simple solvothermal method in which the broad spectrum antibiotics(mainly tetracyclines and supplemented by quinolones)were used as target pollution sources to evaluate its adsorption and photocatalytic performance.Notably,the Zscheme composite significantly exhibit the enhancement for degradation efficiency of tetracycline and other antibiotic by using Ni_(2)P nanoparticles as electron conductor.Active species capture experiment and electron spin resonance(ESR)technology reveal the mechanism of Z-scheme Ni_(2)P/BMO/CN photocatalytic reaction in detail.In addition,based on the identification of intermediates by liquid chromatography–mass spectroscopy(LC–MS),the possible photocatalytic degradation pathways of TC were proposed.

关键词： Ni_(2)P/Bi_(2)MoO_(6)/g-C_(3)N_(4) Z-scheme Photocatalysis Adsorption

Periphytic biofilms-mediated microbial interactions and their impact on the nitrogen cycle in rice paddies

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Eco-Environment & Health 2022年第3期1卷 172-180页

作者： Zhihao Chen Jan Dolfing Shunyao Zhuang Yonghong Wu State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China Zigui Three Gorges Reservoir Ecosystem Observation and Research Station of Ministry of Water Resources of the People's Republic of ChinaYichang 443605China University of Chinese Academy of Sciences Beijing 100049China Faculty of Energy and Environment Northumbria UniversityNewcastle Upon Tyne NE18QHUK

Rice paddies are unique waterlogged wetlands artificially constructed for agricultural production.Periphytic biofilms(PBs)at the soil–water interface play an important role in rice paddies characterized by high nutrient input but low utilization efficiency.PBs are composed of microbial aggregates,including a wide variety of microorganisms(algae,bacteria,fungi,protozoa,and metazoa),extracellular polymeric substances and minerals(iron,aluminum,and calcium),which form an integrated food web and energy flux within a relatively stable micro-ecosystem.PBs are crucial to regulate and streamline the nitrogen cycle by neutralizing nitrogen losses and improving rice production since PBs can serve as both a sink by capturing surplus nitrogen and a source by slowly re-releasing this nitrogen for reutilization.Here the ecological advantages of PBs in regulating the nitrogen cycle in rice paddies are illustrated.We summarize the key functional importance of PBs,including the intricate and delicate community structure,microbial interactions among individual phylotypes,a wide diversity of selfproduced organics,the active adaptation of PBs to constantly changing environments,and the intricate mechanisms by which PBs regulate the nitrogen cycle.We also identify the future challenges of microbial interspecific cooperation in PBs and their quantitative contributions to agricultural sustainability,optimizing nitrogen utilization and crop yields in rice paddies.

关键词： Periphytic biofilms Microbial aggregates Regulation Nitrogen cycle

Tribological performance of hydrogenated diamond-like carbon coating deposited on superelastic 60NiTi alloy for aviation selflubricating spherical plain bearings

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Chinese Journal of Aeronautics 2022年第12期35卷 309-320页

作者： Yefei ZHOU Zhihao Chen Zhonghui HU Lei LI Qingxiang YANG Xiaolei XING College of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science&Technology Yanshan UniversityQinhuangdao 066004China Aviation Key Laboratory of Science and Technology on Generic Technology of Self-Lubricating Spherical Plain Bearing Yanshan UniversityQinhuangdao 066004China AVIC the First Aircraft Institute Xi’an 710089China Northwest Institute for Nonferrous Metal Research Xi’an 710016China

It is imperative to develop a novel matching of metallic substrate and self-lubricating coating for aircraft spherical plain bearing in a wide range of service conditions.As a new type of superelastic material,60NiTi alloy meets the performance requirements of aerospace bearing materials,but exhibits poor tribological performance,especially under the conditions of dry sliding friction.A Hydrogenated Diamond-Like Carbon(H-DLC)coating was deposited on the 60NiTi alloy to improve its tribological performance.The microstructure and mechanical behavior of the 60NiTi alloy and its H-DLC coating were explored.Results show that improvement of friction and wear performance of the H-DLC coating deposited on the 60NiTi substrate is mainly achieved by graphitization at the friction interface and the transfer film produced on the counterpart ball.The increased friction load leads to intensification of graphitization at the friction interface and formation of continuous and compact transfer film on the surface of the counterpart ball.

关键词： 60NiTi Diamond-Like Carbon(DLC)coating Graphitization Transfer film Tribology

Recent advances in the synthesis of discrete oligomers and polymers: chemistry, strategy and technology

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Science China Chemistry 2022年第6期65卷 1007-1009页

作者： Yaodi chen zhihao Huang Zhengbiao Zhang College of Chemistry Chemical Engineering and Materials ScienceSoochow UniversitySuzhou215123China State Key Laboratory of Radiation Medicine and Protection Soochow UniversitySuzhou215123China

Nature creates a variety of biomacromolecules, such as DNA and proteins, with precisely defined chain lengths/molecular weights (MWs), monomer sequences, and topologies. In contrast, traditional synthetic polymers hav... 详细信息

关键词： synthesis weights inhomogeneous

Ligand effects on arsenite removal by zero-valent iron/O2: Dissolution, corrosion, oxidation and coprecipitation

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Journal of Environmental Sciences 2019年第12期31卷 131-140页

作者： Xiaojie Song chen Zhang Bingdang Wu Xiaomeng Wang Zhihao Chen Shujuan Zhang State Key Laboratory of Pollution Control and Resource Reuse School of the Environment Nanjing University

Ligands may increase the yields of reactive oxygen species(ROS)in zero-valent iron(ZVI)/O2 systems.To clarify the relationship between the properties of ligands and their effects on the oxidative removal of contaminants,five common ligands(formate,acetate,oxalate,ethylenediaminetetraacetic acid(EDTA),and phosphate)as well as acetylacetone(AA)were investigated with arsenite(As(III))as the target contaminant at three initial p H values(3.0,5.0,and 7.0).The addition of these ligands to the ZVI/O2 system resulted in quite different effects on As(III)removal.EDTA enhanced the oxidation of As(III)to arsenate(As(V))but inhibited the removal of As(V).Oxalate was the only ligand in this work that accelerated both the removal of As(III)and As(V).By analyzing the ligand effects from the four aspects:dissolution of surface iron(hydr)oxides,corrosion of ZVI,reaction with ROS,and interference with precipitation,the following properties of ligands were believed to be important:ability to provide dissociable protons,complexation ability with iron,and reactivity with ROS.The complexation ability is a double-edged sword.It could enhance the generation of ROS by reducing the reduction potential of the Fe(III)/Fe(II)redox couple,but also could inhibit the removal of arsenic by coprecipitation.The elucidated relationship between the key property parameters of ligands and their effects on the ZVI/O2 system is helpful for the rational design of effective ZVI/ligand/O2 systems.

关键词： Zero-valent iron Ligand Arsenite Acetylacetone

Metastable hybridized structure transformation in amorphous carbon films during friction-A study combining experiments and MD simulation

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Friction 2023年第9期11卷 1708-1723页

作者： Yefei ZHOU Zhihao Chen Tao ZHANG Silong ZHANG Xiaolei XING Qingxiang YANG Dongyang LI School of Mechanical Engineering Yanshan UniversityQinhuangdao 066004China State Key Laboratory of Metastable Materials Science&Technology Yanshan UniversityQinhuangdao 066004China Chemical and Materials Engineering Department University of AlbertaEdmonton T6G 2H5Canada

Amorphous carbon films have attracted substantial interest due to their exceptional mechanical and tribological properties.Previous studies revealed that the amorphous carbon films exhibited lower coefficient of friction(COF)because of the transformation in bond structure from sp^(3)-C to sp^(2)-C during friction processes.However,the mechanism for such a transformation during friction is not well understood.This study is conducted to get an insight into the metastable transformation in amorphous carbon film during friction by means of experiments and molecular dynamics(MD)simulation.Relevant wear tests showed that wear of the film changed from an abrasive wear mode to a mixture of abrasion and adhesive wear,resulting in a decrease in growth rate of the wear rate after the running-in stage.It is worth noting that the sp^(3)-C atoms were increased during the running-in stage when the films contained lower sp^(3)/sp^(2) ratios.However,the formed sp^(3)-C atoms could only be short-lived and gradually transformed to sp^(2)-C atoms with the graphitization generated on the wearing surface of the films.The radial distribution function and translational order parameter indicated that the films'high sp^(3)/sp^(2) ratio led to an increased sp^(2)-C proportion on the wear scar after friction,which caused an increased structural ordering.

关键词： amorphous carbon film metastable transformation structural order molecular dynamics(MD)simulation tribological performance

The high-quality Pinellia pedatisecta genome reveals a key role of tandem duplication in the expansion of its agglutinin genes

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Horticulture Research 2023年第3期10卷 41-44页

作者： zhihao Qian Jun Ding Zhizhong Li Jinming chen Wuhan Botanical Garden Chinese Academy of SciencesWuhan 430074China University of Chinese Academy of Sciences Beijing 100049China CAS Key Laboratory of Plant Germplasm Enhancement and Specialty Agriculture Wuhan Botanical GardenInnovative Academy of Seed DesignChinese Academy of SciencesWuhanChina

Dear Editor,Pinellia Tenore,a small genus of the monocot family Araceae,consists of only nine perennial herbaceous species and is mainly distributed in East Asia[1].Pinellia plants have been widely used as herbal medicines in Asia for over 2000 years.Among these species,P.ternata and P.pedatisecta are most widely used as traditional medicinal herbs[2].In China,the medicinal utilization of P.ternata and P.pedatisecta was first documented in the Divine Farmer’s Materia Medica(Chinese name:‘Shennong Bencao Jing’)during the Eastern Han dynasty(25–250 AD).Tubers produced by these plants have been traditionally utilized to treat vomiting,infection,and inf lammation[3].Modern pharmacological studies have indicated that the pharmacological effects of Pinellia plants are closely related to endogenous components,such as plant lectins,alkaloids,amino acids,nucleosides,and polysaccharides[2].P.ternata has been listed in the Chinese Pharmacopoeia as a common traditional Chinese medicine.However,to date no genomic resources have been reported in the genus Pinellia,which greatly limits further studies on this valuable resource.

关键词： listed expansion utilized

An Improved Treatment on the Apparent Contact Angle of a Single-Bubble in Consideration of Microlayer for Simulations of Nucleate Pool Boiling

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Journal of Thermal Science 2021年第6期30卷 1951-1959页

作者： chen zhihao WU Feifei UTAKA Yoshio chen Ping LIANG chen School of Mechanical Engineering Tianjin UniversityTianjin 300350China Key Laboratory of Efficient Utilization of Low and Medium Grade Energy(Tianjin University) Ministry of EducationTianjin 300350China Department of Mechanical Engineering Graduate School of EngineeringKyushu UniversityFukuoka 819-0395Japan National New Energy Vehicle Technology Innovation Center Beijing 100176China Beijing Automotive Technology Center BAIC GroupBeijing 101300China

Numerical simulation of single-bubble growth behavior during nucleate pool boiling was developed based on the volume of fluid method considering the thin liquid layer under the bubble(microlayer).However,the experimental values of apparent contact angle(the small region connecting the microlayer and bulk liquid)are crucial for the simulations.Reliance on experimental results limited the further application of such numerical method.In this study,a new method calculating the force balance,used to determine the interface shape near the apparent contact angle,was proposed instead of using the experimental values of the apparent contact angle.As a result,the good agreement was shown between the simulation results obtained based on the new and previous numerical methods.The simulation results were also in consistent with the experimental results.It can be concluded that the single-bubble behavior,including the heat transfer characteristics,during nucleate pool boiling can be simulated based on the proposed method.

关键词： numerical simulation nucleate pool boiling bubble growth microlayer surface tension VOF method