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Crown ether interlayer-modulated polyamide membrane with nanoscale structures for efficient desalination

Nano Research 2023年第5期16卷 6153-6159页

作者： Yanyu Zhao Xiangju Song minghua huang Heqing Jiang Arafat Toghan School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Qingdao Key Laboratory of Functional Membrane Material and Membrane Technology Qingdao Institute of Bioenergy and Bioprocess TechnologyChinese Academy of SciencesQingdao 266101China Chemistry Department College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh 11623Saudi Arabia Chemistry Department Faculty of ScienceSouth Valley UniversityQena 83523Egypt

Nanoscale thin-film composite(TFC)polyamide membranes are highly desirable for desalination owing to their excellent separation *** is a permanent pursuit to further improve the water flux of membrane without deteriorating the salt ***,we fabricated a high-performance polyamide membrane with nanoscale structures through introducing multifunctional crown ether interlayer on the porous substrate impregnated with *** crown ether interlayer can reduce the diffusion of amine monomers to reaction interface influenced by its interaction with m-phenylenediamine and the spatial shielding effect,leading to a controlled interfacial polymerization(IP)***,crown ether with intrinsic cavity is also favorable to adjust the IP process and the microstructure of polyamide *** the outer surface of the nanocavity is lipophilic,crown ether has good solvency with the organic phase,thus attracting more trimesoyl chloride molecules to the interlayer and promoting the IP reaction in the confined *** a result,a nanoscale polyamide membrane with an ultrathin selective layer of around 50 nm is *** optimal TFC polyamide membrane at crown ether concentration of 0.25 wt.%exhibits a water flux of 61.2 L·m^(−2)·h^(−1),which is 364%of the pristine TFC membrane,while maintaining a rejection of above 97%to *** development of the tailor-made nanoscale polyamide membrane via constructing multifunctional crown ether interlayer provides a straightforward route to fabricate competitive membranes for highly efficient desalination.

关键词： polyamide membrane nanoscale structures crown ether interlayer confined polymerization reverse osmosis

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Elucidating the promotion mechanism of the ternary cooperative heterostructure toward industrial-level urea oxidation catalysis

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Journal of Energy Chemistry 2023年第10期85卷 116-125,I0005页

作者： Xiujuan Xu Xiaotong Wei Liangliang Xu minghua huang Arafat Toghan School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina Department of Chemical and Biomolecular Engineering Korea Advanced Institute of Science and Technology(KAIST)291 Daehak-RoYuseong-GuDaejeon 34141Republic of Korea Chemistry Department College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh 11623Saudi Arabia Chemistry Department Faculty of ScienceSouth Valley UniversityQena 83523Egypt

From the perspective of electronic structure modulation,it is highly desirable to rationally design the active urea oxidation reaction(UOR)catalysts through interface *** binary cooperative heterostructure systems have been shown significant enhancement for catalyzing UOR,but their performance still remains unsatisfactory for industrialization because of the unfavorable intermediate adsorption/desorption and deficient electron transfer *** response,taking the ternary cooperative Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) heterostructure as the proof-of-concept paradigm,a catalytic model is rationally put forward to elucidate the UOR promotion mechanism at the molecular *** rod-like Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) nanoarrays with three-phase heterojunction are experimentally fabricated on Ni foam(named as Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4)/NF)via simple two-step *** density functional theory calculations disclose that construction of Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4) heterostructure model not only induce charge redistribution at the interfacial region for creating innumerable electron transfer channels,but also endow it with a moderate d-band center that could help to build a balance between adsorption and desorption of diverse UOR *** from the unique rod-like nanoarrays with large specific surface area and the optimized electronic structure,the well-designed Ni_5P_(4)/NiSe_(2)/Ni_(3)Se_(4)/NF could act as a robust catalyst for driving UOR at industrial-level current densities under tough environments,offering great potential for commercial applications.

关键词： Urea oxidation reaction Ternary cooperative heterostructure Electronic structure Interface engineering

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The impact of ester groups on 1,8-naphthalimide electron transport material in organic solar cells

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Chinese Journal of Structural Chemistry 2024年第6期43卷 18-21页

作者： Shaonan Liu Shuixing Dai minghua huang School of Materials Science and Engineering Ocean University of ChinaQingdao266100China

Organic solar cells(OSCs)offer significant advantages,including light weight,mechanical flexibility,solution processability and translucency[1,2].In recent years,significant developments have been taken in the realm of research involving polymer donors[3,4],non-fullerene acceptors[5,6],and interlayer materials[7].The progress in these areas has propelled the field of OSCs towards increased power conversion efficiency(PCE)and improved device *** interface engineering of OSCs involves the optimization of hole transport materials and electron transport materials(ETMs)[8].Typically,ETMs play a crucial role in promoting charge extraction and transfer,contributing to the enhancement of Ohmic contact between the metal electrode and the active layer,thereby reducing the cathode work function(WF)[9].

关键词： transport thereby electron

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Effects of Duhuojisheng Tang and combined therapies on prolapse of lumbar intervertebral disc:a systematic review of randomized control trails

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Journal of Traditional Chinese Medicine 2013年第2期33卷 145-155页

作者： Yanxu Ma minghua huang Jingyan Cui Kai Meng Yuhao Zhao Department of Orthopedics Beijing Traditional Chinese Medicine HospitalCapital Medical University Editorial Board(Chinese Edition) Journal of Traditional Chinese Medicine College of Health Administration and Education under Capital Medical University Capital Base for Research into Health Administration and Policy School of Traditional Chinese Medicine Capital Medical University

OBJECTIVE： A systematic review of the literature was conducted to evaluate the curative effect and safety of Duhuojisheng Tang on prolapse of the lumbar intervertebral disc. METHODS： The databases of PubMed, China Na- tional Knowledge Infrastructure （CNKI）, Chinese Sci- entific Journals Database （VlP）, Chinese Biomedical Literature Database （CBM） and Chinese Medical Ci- tation Index （CMCl） were searched up to January 30, 2012. Randomized controlled trials were select- ed to compare Duhuojisheng Tang with one ormore of the following treatments： traction, acu- puncture, massage, cupping and Western medical treatment. The quality-evaluating standard and the software RevMan 5.1 in Cochrane coordinative net were used to analyze the data. The effective index- es of the results were clinical curative rate, effective- ness of alleviating clinical symptoms and adverse reaction. RESULTS： Thirty-one randomized controlled trials of low quality, involving 3915 patients were system- atically evaluated. Statistical analyses showed that good curative effect was achieved in both the group using Duhuojisheng Tang alone and with combined therapies. CONCLUSION： Using Duhuojisheng Tang alone or combined with other therapies can effectively im- prove pain, leg-raising height and other clinical symptoms of patients with prolapse of lumbar in- tervertebral disc. Due to low methodological quali- ty of the articles, no exact recommendations can be made.

关键词： Intervertebral disc displacement Ran-domized controlled trials Review DuhuojishengTang

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A novel durable intelligent fiber reinforced polymer anchor with embedded optical fiber Bragg grating sensors

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Science China(Technological Sciences) 2012年第5期55卷 1455-1462页

作者： huang minghua ZHOU Zhi YUE Shuai HE JianPing OU JinPing School of Civil Engineering Harbin Institute of TechnologyHarbin 150090China Faculty oflnfrastructure Engineering Dalian University of TechnologyDalian 116024China

Anchors are the key members of the geotechnical anchorage engineering, it is urgent to monitor their behavior in service for preventing the potential risks. This paper proposes a novel durable intelligent fiber reinforced polymer （FRP） anchor to understand the behavior of the anchor in the field application. Series of optical fiber Bragg grating （FBG） sensors were embedded into the central axis along the anchor to sense itself axial strain variations. An evolution model of axial strain was also developed to evaluate the behavior along the anchor. A demonstration test was carried out to test its self-sensing properties in the laboratory. The experimental results indicated that the embedded FBG sensors monitored the behavior, e.g. axial strairl/interfacial damage evolutions along the anchor and displacement/applied load at the pulling end effectively, without influence from the interfacial compression and slip effects.

关键词： anchor fiber reinforced polymer optical fiber Bragg grating evolution model structural health monitoring

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Synthesis of hierarchical transition metal oxyhydroxides in aqueous solution at ambient temperature and their application as OER electrocatalysts

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Journal of Energy Chemistry 2022年第8期31卷 89-97,I0003页

作者： Zongkun Chen Xingkun Wang Sascha Keßler Qiqi Fan minghua huang Helmut Cölfen University of Konstanz Physical ChemistryUniversitätsstraße 10Konstanz D-78457Germany School of Materials Science and Engineering Ocean University of ChinaQingdao 266100ShandongChina

First-row(3 d)transition metal oxyhydroxides have attracted increasing attention due to their various *** investigating the oxidation mechanism and processing such materials into hierarchical architectures are greatly desired for their further development,it remains unclear how the oxidation state change occurs,and efforts to produce hierarchical oxyhydroxides in compliance with high ecological and economic standards have progressed ***,we describe a facile one-step coprecipitation route for the preparation of hierarchical CoOOH,NiOOH and MnOOH,which involves the diffusion of NH_(3)originating from ammonium hydroxide solution into an aqueous solution containing metal ion salts and K_(2)S_(2)O_(8).Comprehensive characterizations by scanning electron microscope,transmission electron microscopy,X-ray diffraction analysis,X-ray photoelectron spectroscopy,ultraviolet-visible spectroscopy and in situ p H measurement demonstrated that K_(2)S_(2)O_(8)induces the oxidation state change of metal ion species after the start of ***,it was found that,benefiting from the OH–concentration gradient created by the NH_(3)diffusion method and the suitable growth environment provided by the presence of K_(2)S_(2)O_(8)(high nucleation rate and secondary nucleation),the formation of hierarchical oxyhydroxide structures can be realized in aqueous solution at ambient temperature without the use of heat energy and additional structure-directing *** hierarchical CoOOH structures are performed as the electrocatalysts for the oxygen evolution reaction in alkaline media,which exhibit good activity with an overpotential of 320 m V at 10 m A cm^(-2)and a low Tafel slope of 59.6 m V dec^(–1),outperforming many congeneric ***,our study not only provides important insights to understand the formation mechanism of hierarchical oxyhydroxides,but also opens up new opportunities for the preparation of hierarchical oxyhydroxides via a f

关键词： Formation mechanism Hierarchical transition metal oxyhydroxides Aqueous solution Ambient temperature Oxygen evolution reaction

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Engineering adjacent Fe_(3)C as proton-feeding centers to single Fe sites enabling boosted oxygen reduction reaction kinetics for robust Zn-air batteries at high current densities

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Nano Research 2023年第7期16卷 9371-9378页

作者： Canhui Zhang Xingkun Wang Kai Song Kaiyue Chen Shuixing Dai Huanlei Wang minghua huang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China

Oxygen reduction reaction(ORR)plays an important role in the next-generation energy storage technologies,whereas it involves the sluggish and complicated proton-coupled electron transfer(PCET)steps that greatly limit the ORR ***,it is urgent to construct an efficient catalyst that could simultaneously achieve the rapid oxygen-containing intermediates conversion and fast PCET process but remain ***,the adjacent Fe_(3)C nanoparticles coupling with single Fe sites on the bubble-wrap-like porous N-doped carbon(Fe_(3)C@FeSA-NC)were deliberately *** investigations reveal that the adjacent Fe_(3)C nanoparticles speed up the water dissociation and serve as proton-feeding centers for boosting the ORR kinetics of single Fe *** from the synergistic effect of the Fe_(3)C and single Fe sites,the Fe_(3)C@FeSA-NC affords an excellent half-wave potential of 0.88 V,and enables the assembled Zn-air batteries with the high peak power density of 164.5 mW·cm^(-2)and long-term stability of over 200 h at high current densities at 50 mA·cm^(-2).This work clarifies the mechanism for improving ORR kinetics of single atomic sites by engineering the adjacent proton-feeding centers,shedding light on the rational design of cost-effective electrocatalysts for energy conversion and storage technologies.

关键词： oxygen reduction reaction discharge stability water dissociation proton-coupled electron transfer

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Controllable defect engineering based on cobalt metal-organic framework for boosting oxygen evolution reaction

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Chinese Journal of Structural Chemistry 2024年第1期43卷 47-53页

作者： Tengjia Ni Xianbiao Hou Huanlei Wang Lei Chu Shuixing Dai minghua huang School of Materials Science and Engineering Ocean University of ChinaQingdao266100China

Defect engineering on metal-organic frameworks(MOFs)provides high flexibility to rationally design advanced oxygen evolution reaction(OER)catalysts with low overpotential and high ***,fundamental understanding the effect of defect concentration on catalytic OER activity is still quite ***,the Co-MOF-Dx catalysts with regulated oxygen defects concentration are deliberately constructed via coupling one-pot solvothermal synthesis with NaBH_(4)chemical reduction *** findings propose that the oxygen defect concentration within Co-MOF-Dx gradually increases with raising the NaBH_(4)content,which could provide a flexible platform to tailor the electronic structure around active Co site and optimize adsorption/desorption capacity of oxygen *** the introduction content of NaBH_(4)is up to 5 mg,the resulting abundant unsaturated coordination defects could endow the Co-MOF-D5 catalyst with optimized electronic structure and more exposed active sites for improving charge transfer and adsorption/desorption *** is found that the optimized Co-MOF-D5 can drive the current density of 10 mA cm^(-2)only at a low overpotential of 300 mV with the small Tafel slope of 53.1 mV dec^(-1)in alkaline *** work sheds light on the way for the development of high-performance MOF catalysts via modulating defect concentration.

关键词： Defect engineering Unsaturated coordination defect Metal-organic frameworks Oxygen evolution reaction

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Controllable Ni/NiO interface engineering on N-doped carbon spheres for boosted alkaline water-to-hydrogen conversion by urea electrolysis

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Nano Research 2022年第8期15卷 7124-7133页

作者： Xiujuan Xu Xianbiao Hou Puyu Du Canhui Zhang Shucong Zhang Huanlei Wang Arafat Toghan minghua huang School of Materials Science and Engineering Ocean University of ChinaQingdao 266100China Chemistry Department Faculty of ScienceSouth Valley UniversityQena 83523Egypt Chemistry Department College of ScienceImam Mohammad Ibn Saud Islamic University(IMSIU)Riyadh 11623Saudi Arabia

Interface engineering has gradually attracted substantial research interest in constructing active bifunctional catalysts toward urea *** fundamental understanding of the crystallinity transition of the components on both sides of the interface is extremely significant for realizing controllable construction of catalysts through interface engineering,but it still remains a ***,the Ni/NiO heterogenous nanoparticles are successfully fabricated on the porous N-doped carbon spheres by a facile hydrothermal and subsequent pyrolysis *** for the first time we show the experimental observation that the Ni/NiO interface can be fine-tuned via simply tailoring the heating rate during pyrolysis process,in which the crystalline/amorphous or crystalline/crystalline Ni/NiO heterostructure is deliberately constructed on the porous N-doped carbon spheres(named as CA-Ni/NiO@NCS or CC-Ni/NiO@NCS,respectively).By taking advantage of the unique porous architecture and the synergistic effect between crystalline Ni and amorphous NiO,the well-designed CA-Ni/NiO@NCS displays more remarkable urea oxidation reaction(UOR)and hydrogen evolution reaction(HER)activity than its crystalline/crystalline counterpart of CC-Ni/NiO@***,the whole assembled two-electrode electrolytic cell using the elaborate CANi/NiO@NCS both as the anode and cathode can realize the current density of 10 mA·cm^(−2)at a super low voltage of 1.475 V(264 mV less than that of pure water electrolysis),as well as remarkable prolonged stability over 63 ***,the H_(2)evolution driven by an AA battery and a commercial solar cell is also studied to enlighten practical applications for the future.

关键词： Ni/NiO controllable interface engineering urea oxidation reaction hydrogen evolution reaction urea electrolysis

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Recovery of Titanium from the Rich Titanium Slag by H2SO4 Method

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Journal of Materials Science & Technology 2003年第2期19卷 191-192页

作者： Zhenqi huang, minghua WANG, Xinghong DU and Zhitong SUISchool of Materials and Metallurgy, Northeastern University, Shenyang 110006, China Sch. of Mat. and Metall. Northeastern Univ. Shenyang 110006 China

The blast furnace slag bearing Ti02 in Panzhihua, China, is an important resource to be utilized. In the present paper, the effects of the ratio of slag to H2S04, the reaction temperature, the particle size of the slag, and the concentration of H2S04 on the reaction rate and the acidolysis ratio of Ti were studied. The results indicated that the maximum acidolysis ratio reached 98%, which can serve as an experimental basis for the production of titania from the slag.

关键词： Slag bearing TiO2 H2SO4 Acidolysis Titanium recovery

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