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Protein-activated atomic layer deposition for robust crude-oil-repellent hierarchical nano-armored membranes

Science Bulletin 2024年第2期69卷 218-226页

作者： Xiaobin Yang Pan Sun Yajie Wen Anil U.Mane Jeffrey W.Elam Jun Ma shaomin liu Seth B.Darling Lu Shao MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and Chemical EngineeringHarbin Institute of TechnologyHarbin 150001China Chemical Sciences and Engineering Division Argonne National LaboratoryLemont IL 60439USA Applied Materials Division Argonne National LaboratoryLemont IL 60439USA Advanced Materials for Energy-Water Systems Energy Frontier Research Center Argonne National LaboratoryLemont IL 60439USA Pritzker School of Molecular Engineering University of ChicagoChicago IL 60637USA Department of Physics University of Ilinois at ChicagoChicago IL 60607USA School of Environment Harbin Institute of TechnologyHarbin 150090China WA School of Mines:Minerals Energy and Chemical EngineeringCurtin UniversityPerth WA 6845Australia

Atomic layer deposition(ALD)offers unique capabilities to fabricate atomically engineered porous materials with precise pore tuning and multi-functionalization for diverse applications like advanced membrane separations towards sustainable energy-water systems.However,current ALD technique is inhibited on most non-polar polymeric membranes due to lack of accessible nucleation sites.Here,we report a facile method to efficiently promote ALD coating on hydrophobic surface of polymeric membranes via novel protein activation/sensitization.As a proof of concept,TiO2 ALD-coated membranes activated by bovine serum albumin exhibit remarkable superhydrophilicity,ultralow underwater crude oil adhesion,and robust tolerance to rigorous environments including acid,alkali,saline,and ethanol.Most importantly,excellent cyclable crude oil-in-water emulsion separation performance can be achieved.The mechanism for activation/sensitization is rooted in reactivity for a particular set of amino acids.Furthermore,the universality of protein-sensitized ALD is demonstrated using common egg white,promising numerous potential usages in biomedical engineering,environmental remediation,lowcarbon manufacturing,catalysis,and beyond.

关键词： Membrane separation Atomic layer deposition Water treatment Antifouling

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Nanoparticle(NP)-mediated APOC1 silencing to inhibit MAPK/ERK and NF-κB pathway and suppress breast cancer growth and metastasis

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Science China(Life Sciences) 2023年第11期66卷 2451-2465页

作者： shaomin liu Fengqian Zhang Yixia Liang Guo Wu Rong liu Xiuling Li Phei Er Saw Zhonghan Yang Department of Biochemistry Molecular Cancer Research CenterSchool of MedicineSun Yat-sen UniversityShenzhen 518107China Nanhai Translational Innovation Center of Precision Immunology Sun Yat-sen Memorial HospitalFoshan 528200China Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study Institute of Pharmacy&PharmacologySchool of Pharmaceutical ScienceUniversity of South ChinaHengyang 421001China

Breast cancer is one of the most common malignant tumors with high mortality and poor prognosis in women.There is an urgent need to discover new therapeutic targets for breast cancer metastasis.Herein,we identified that Apolipoprotein C1(APOC1)was up-regulated in primary tumor of breast cancer patient that recurrence and metastasis by immunohistochemistry(IHC).Kaplan-Meier Plotter database showed that high levels of APOC1 in breast cancer patients were strongly associated with worse overall survival(OS)and relapse-free survival(RFS).Mechanistically,APOC1 silencing significantly inhibits MAPK/ERK kinase pathway and restrains the NF-κB to decrease the transcription of target genes related to growth and metastasis in vitro.Based on this regulatory mechanism,we developed these findings into potential therapeutic drugs,glutathione(GSH)responsive nanoparticles(NPs)were used for systemic APOC1 siRNA delivery,NPs(siAPOC1)silenced APOC1 expression,and subsequently resulted in positive anti-tumor effects in orthotopic and liver metastasis models in vivo.Taken together,GSH responsive NPmediated siAPOC1 delivery was proved to be effective in regulating growth and metastasis in multiple tumor models.These findings show that APOC1 could be a potential biomarker to predict the prognosis of breast cancer patients and NP-mediated APOC1 silencing could be new strategies for exploration of new treatments for breast cancer metastasis.

关键词： cancer metastasis APOC1 nanoparticles siRNA delivery

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Assessment and improvement of Noah-MP for simulating water and heat exchange over alpine grassland in growing season

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Science China Earth Sciences 2022年第3期65卷 536-552页

作者： Shuang SUN Donghai ZHENG shaomin liu Ziwei XU Tongren XU Hui ZHENG Xiaofan YANG State Key Laboratory of Earth Surface Processes and Resource Ecology Faculty of Geographical ScienceBeijing Normal UniversityBeijing 100875China National Tibetan Plateau Data Center(TPDC) State Key Laboratory of Tibetan Plateau Earth System Environment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China CAS Key Laboratory ofRegional Climate-Environment Research for Temperate East Asia Institute ofAtmospheric PhysicsChinese Academy of SciencesBeijing 100029China

Alpine grassland is the main ecosystem of the Tibetan Plateau(TP),thus accurate simulation of water and heat exchange in the grassland will significantly enhance the understanding of the land-atmosphere interaction process on the TP.In this study,we assessed and improved the ensemble numerical simulations of the community Noah land surface model with multiparameterization options(Noah-MP)by using observations collected from four alpine grassland observation sites.The four observation sites belong to the upper Heihe River Basin Integrated Observatory Network located in the northeastern part of the TP.First,an ensemble of 1008 numerical simulation experiments,based on multiparameterization options of seven physical processes/variables in the Noah-MP,was carried out for the vegetation growing season.The Taylor skill score was then used to assess the model performance and select the optimal combination of parameterization options for a more exact simulation of the water and heat exchange in alpine grassland.The accuracy of Noah-MP simulation was further improved by introducing new parameterizations of thermal roughness length,soil hydraulic properties,and vertical root distribution.It was found that:(1)Simulation of water and heat exchange over alpine grassland in the growing season was mainly affected by the parameterizations of dynamic vegetation,canopy stomatal resistance,runoff and groundwater dynamics,and surface exchange coefficient for heat transfer.Selection of different parameterization options for these four physical processes/variables led to large differences in the simulation of water and heat fluxes.(2)The optimal combination of parameterization options selected in the current Noah-MP framework suffered from significant overestimation of sensible heat flux(H)and underestimation of soil moisture(θ)at all observation sites.(3)The overestimation of H was significantly improved by introducing a new parameterization of thermal roughness length.Furthermore,the underestimation ofθwas resolved by introducing a

关键词： Noah-MP land surface model Alpine grassland Ensemble numerical experiments Parameterization options Parameterization improvement

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Exsolution of CoFe(Ru)nanoparticles in Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)for efficient oxygen evolution reaction

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Nano Research 2022年第8期15卷 6977-6986页

作者： Yi Liang Yu Cui Yang Chao Ning Han Jaka Sunarso Ping Liang Xin He Chi Zhang shaomin liu School of Applied Physics and Materials Wuyi UniversityJiangmen 529020China Department of Materials Engineering KU LeuvenLeuven 3001Belgium Research Centre for Sustainable Technologies Faculty of EngineeringComputing and ScienceSwinburne University of TechnologyJalan Simpang TigaKuching 93350SarawakMalaysia College of Chemical Engineering Beijing University of Chemical TechnologyBeijing 100029China

The rational modification of perovskite oxides(ABO3−δ)is essential to improve the efficiency and stability of oxygen electrolysis.Surface engineering represents a facile approach to modify perovskites for enhanced performance.Through compositional design and in situ exsolution,a Ru-doped(La_(0.8)Sr_(0.2))_(0.9)Co_(0.1)Fe_(0.8)Ru_(0.1)O_(3−δ)(LSCFR)perovskite anchored with CoFe(Ru)alloy particles on the surface was fabricated for oxygen evolution reaction(OER)in this work.Experimental results and calculations indicate that Ru-doping promotes the exsolution of CoFe(Ru)from the perovskite parent.Upon exsolution in the reduced atmosphere for 3 h,the catalyst(LSCFR-3)exhibited superior OER performance with an overpotential of 347 mV and a Tafel slope of 54.65 mV·dec^(−1),and showed good stability in contrast to the pristine LSCFR.The exsolution of CoFe(Ru)particles,Ru doping,and the increase of surface oxygen vacancies are responsible for the enhancement of OER performance.The findings obtained in this study highlight the possibility of controlling exsolution and composition of nanoparticles by element doping and prove that in situ exsolution is an effective strategy for designing OER catalysts.

关键词： perovskite oxides in situ exsolution oxygen evolution reactions CoFe nanoparticles B-site cation doping

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Highly chemiluminescent magnetic mesoporous carbon composites Fe_3O_4@void@C with yolk-shell structure

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Science China Chemistry 2018年第9期61卷 1143-1150页

作者： Rui Yang shaomin liu Hua Cui CAS Key Laboratory of Soft Matter Chemistry Collaborative Innovation Center of Chemistry for Energy Materials (iChEM)Department of Chemistry University of Science and Technology of China

In this work,highly chemiluminescent magnetic mesoporous carbon with yolk-shell structure was synthesized by encapsulating N-(4-aminobutyl)-N-ethylisoluminol(ABEI)and Co^(2+)into the magnetic mesoporous carbon composites(Co^(2+)-ABEI-Fe_3O_4@void@C).The synthetic Co^(2+)-ABEI-Fe_3O_4@void@C showed a good magnetic separation property,which could remove residual ABEI molecules and Co^(2+)in less than 3 min under an external magnet.Moreover,the synthetic Co^(2+)-ABEI-Fe_3O_4@void@C demonstrated good chemiluminescence(CL)property and good stability when interacted with alkaline H_2O_2solution.The CL intensity of such Co^(2+)-ABEI-Fe_3O_4@void@C was about 120 times higher than that of ABEI-Fe_3O_4@void@C.The Co^(2+)-ABEI-Fe_3O_4@void@C also exhibited good electrochemiluminescence(ECL)property in alkaline solution.The outstanding CL/ECL performance of the Co^(2+)-ABEI-Fe_3O_4@void@C was attributed to the Co^(2+)immobilized in the Co^(2+)-ABEI-Fe_3O_4@void@C,which catalyzed the decomposition of H_2O_2to generate O_2^(·-)and HO~·,expediting the CL/ECL reaction.The synthetic Co^(2+)-ABEI-Fe_3O_4@void@C may be of great application for the development of new methodologies in bioanalysis.

关键词：壳结构磁性蛋黄碳分离性质合成能移分子

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Preparation of Ag@AgCl-doped TiO_2/sepiolite and its photocatalytic mechanism under visible light

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Journal of Environmental Sciences 2017年第10期29卷 43-52页

作者： shaomin liu Dinglong Zhu Jinglin Zhu Qing Yang Huijun Wu School of Earth Science and Environmental Engineering Anhui University of Science and Technology

A cube-like Ag@Ag Cl-doped TiO2/sepiolite（denoted Ag@Ag Cl–TiO2/sepiolite） was successfully synthesized via a novel method. X-ray diffraction, scanning electron microscopy, energy dispersion X-ray fluorescence, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, and diffuse reflectance ultraviolet–visible spectroscopy were performed to determine the structure and physicochemical properties of Ag@Ag Cl–TiO2/sepiolite. SEM micrographs revealed that Ag@Ag Cl nanoparticles and TiO2 film are well deposited on the surface of tube-like sepiolite. As a result, Ag@Ag Cl–TiO2/sepiolite exhibits a red shift relative to TiO2/sepiolite. Photocatalytic experiments demonstrated that the dosage of catalysts plays an important role during photocatalysis. The photoelectrochemical activities of Ag@Ag Cl–TiO2/sepiolite and TiO2/sepiolite were also investigated. Photocurrent responses confirmed that the ability of Ag@Ag Cl–TiO2/sepiolite to separate photo-generated electron–hole pairs is stronger than that of TiO2/sepiolite. Methylene Blue degradation is also improved under alkaline conditions and visible light irradiation because more UOH is produced by visible light excitation.This excellent catalytic ability is mainly attributed to the formed Ag nanoparticles and the Schottky barrier at the Ag/TiO2 interface. Active species analysis indicated that UO2-and h＋are implicated as active species in photocatalysis. Therefore, catalysts are excited to produce abundant electron–hole pairs after they absorb photons in photocatalysis.

关键词： Ag@AgCl Sepiolite Photocatalyst Photocurrent

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Fe3O4 encapsulated mesoporous silica nanospheres with tunable size and large void pore

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Frontiers of Chemical Science and Engineering 2014年第1期8卷 114-122页

作者： Tingting liu Lihong liu Jian liu shaomin liu Shi Zhang QIAO Department of Chemical Engineering Curtin University Perth WA 6845 Australia School of Chemical Engineering The University of Adelaide SA5005 Australia

Magnetic Fe3O4 and mesoporous silica core- shell nanospheres with tunable size from 110-800 nm were synthesized via a one step self-assembly method. The morphological, structural, textural, and magnetic proper- ties were well-characterized by scanning electron micro- scopy, transmission electron microscopy, X-ray diffraction, N2 adsorption-desorption and magnetometer. These nanocomposites, which possess high surface area, large pore volume and well-defined pore size, exhibit two dimensional hexagonal （P6mm） mesostructures. Interest- ingly, magnetic core and mesoporous silica shell nano- composites with large void pore （20 nm） on the shell were generated by increasing the ratio of ethanol/water. Additionally, the obtained nanocomposites combined magnetization response and large void pore, implying the possibility of applications in drug/gene targeting delivery. The cell internalization capacity of NH2-functionalized nanocomposites in the case of cancer cells （HeLa cells） was exemplified to demonstrate their nano-medicine application.

关键词： mesoporous silicas magnetic nanoparticles,core-shell nanoparticles cell uptake

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Nitrogen-doped Carbon Nanospheres-Modified Graphitic Carbon Nitride with Outstanding Photocatalytic Activity

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纳微快报：英文版 2020年第2期12卷 154-168页

作者： Qiaoran liu Hao Tian Zhenghua Dai Hongqi Sun Jian liu Zhimin Ao Shaobin Wang Chen Han shaomin liu Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023People’s Republic of China School of Environmental Science and Engineering Guangdong University of TechnologyGuangzhou 510006People’s Republic of China School of Engineering Edith Cowan UniversityJoondalupWA 6027Australia School of Chemical Engineering The University of AdelaideAdelaideSA 5005Australia

Metals and metal oxides are widely used as photo/electro-catalysts for environmental remediation.However,there are many issues related to these metal-based catalysts for practical applications,such as high cost and detrimental environmental impact due to metal leaching.Carbon-based catalysts have the potential to overcome these limitations.In this study,monodisperse nitrogen-doped carbon nanospheres(NCs)were synthesized and loaded onto graphitic carbon nitride(g-C3N4,GCN)via a facile hydrothermal method for photocatalytic removal of sulfachloropyridazine(SCP).The prepared metal-free GCN-NC exhibited remarkably enhanced efficiency in SCP degradation.The nitrogen content in NC critically influences the physicochemical properties and performances of the resultant hybrids.The optimum nitrogen doping concentration was identified at 6.0 wt%.The SCP removal rates can be improved by a factor of 4.7 and 3.2,under UV and visible lights,by the GCN-NC composite due to the enhanced charge mobility and visible light harvesting.The mechanism of the improved photocatalytic performance and band structure alternation were further investigated by density functional theory(DFT)calculations.The DFT results confirm the high capability of the GCN-NC hybrids to activate the electron–hole pairs by reducing the band gap energy and efficiently separating electron/hole pairs.Superoxide and hydroxyl radicals are subsequently produced,leading to the efficient SCP removal.

关键词： N-doping Carbon sphere Graphitic carbon nitride Photocatalysis Degradation

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基于移动窗核主成分分析的核电厂主泵故障检测

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核动力工程 2024年第3期45卷 234-240页

作者：张秀春夏虹刘永康朱少民刘洁张汲宇哈尔滨工程大学核安全与先进核能技术工信部重点实验室哈尔滨150001 哈尔滨工程大学核安全与仿真技术国防重点学科实验室哈尔滨150001 苏州热工研究院有限公司江苏苏州215000 国家核电厂安全及可靠性工程技术研究中心江苏苏州215000 中广核研究院有限公司广东深圳518000

由于部件性能衰退、工况变化等因素影响,核动力装置在运行过程中会表现出明显的时变性,进而造成故障检测模型失效。为了改善传统故障检测方法在时变工业过程中的性能和在役适应性,基于核主成分分析(KPCA)和移动窗技术,提出了一种用于核... 详细信息

由于部件性能衰退、工况变化等因素影响,核动力装置在运行过程中会表现出明显的时变性,进而造成故障检测模型失效。为了改善传统故障检测方法在时变工业过程中的性能和在役适应性,基于核主成分分析(KPCA)和移动窗技术,提出了一种用于核动力装置的长时故障检测方法。该方法通过移动窗技术可实现KPCA故障检测模型的自动更新,从而解决检测过程中信号的时变性问题。将移动窗KPCA方法应用于某核电厂主泵的长时监测中,结果表明,主泵在正常和异常状态下,移动窗KPCA方法在故障检测率(FDR)、误报率(FAR)等指标方面均表现出了良好的性能。

关键词：核动力装置核主成分分析(KPCA) 移动窗时变过程故障检测

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Metal-organic-framework-derived formation of Co–N-doped carbon materials for efficient oxygen reduction reaction

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Journal of Energy Chemistry 2020年第1期29卷 137-143,I0005页

作者： Hao Tian Chi Zhang Panpan Su Zhangfeng Shen Hao liu Guoxiu Wang shaomin liu Jian liu State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023LiaoningChina Department of Chemical Engineering Curtin UniversityPerthWA 6845Australia Centre for Clean Energy Technology School of Mathematical and Physical SciencesFaculty of ScienceUniversity of Technology SydneyBroadwaySydneyNSW 2007Australia Joint International Laboratory on Environmental and Energy Frontier Materials School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444China DICP-Surrey Joint Centre for Future Materials Department of Chemical and Process Engineeringand Advanced Technology InstituteUniversity of SurreyGuilfordSurrey GU27XHUK State Key Laboratory of Catalysis iChEMDalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023 LiaoningChina

Non-precious metal nitrogen-doped carbonaceous materials have attracted tremendous attention in the field of electrochemical energy storage and conversion.Herein,we report the designed synthesis of a novel series of Co-N-C nanocomposites and their evaluation of electrochemical properties.Novel yolkshell structured Co nanoparticles@polymer materials are fabricated from the facile coating polymer strategy on the surface of ZIF-67.After calcination in nitrogen atmosphere,the Co–N–C nanocomposites in which cobalt metal nanoparticles are embedded in the highly porous and graphitic carbon matrix are successfully achieved.The cobalt nanoparticles containing cobalt metal crystallites with an oxidized shell and/or smaller(or amorphous)cobalt-oxide deposits appear on the surface of graphitic carbons.The prepared Co–N–C nanoparticles showed favorable electrocatalytic activity for oxygen reduction reactions,which is attributed to its high graphitic degree,large surface area and the large amount existence of Co–N active sites.

关键词： Metal-organic-framework Resin polymer Oxygen reduction reaction Electrocatalysts

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