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Constructing hierarchical nanosheet-on-microwire FeCo LDH@Co3O4 arrays for high-rate water oxidation

Nano Research 2022年第12期15卷 10021-10028页

作者： Tang Tang Zhe jiang Jun Deng Shuai Niu Ze-Cheng Yao wen-jie jiang Lin-Juan Zhang Jin-Song Hu Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing100190China University of the Chinese Academy of Sciences Beijing100049China Beijing National Laboratory for Condensed Matter Physics Institute of PhysicsChinese Academy of SciencesBeijing100190China Shanghai Synchrotron Radiation Facility Shanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai201800China Dalian National Laboratory for Clean Energy Dalian116023China

Alkaline electrochemical water oxidation powered by renewable energies is a promising and environmentally friendly way to produce *** industrial water electrolyzers are commonly operated at a high current density,calling for abundant and durable active sites to participate *** rational design of hierarchically structured electrocatalysts is thus essential to industrial water ***,we develop a Fe3+induced nanosizing strategy for fabricating such a hierarchical FeCo LDH@Co3O4(LDH:layered double hydroxide)nanostructure array for high-rate water *** functional theory(DFT)simulations indicate that the introduction of Fe3+with a small ion radius and high electrical repulsion in the LDH layer distorted the LDH layer,resulting in a reduced nanosheet size and enabling the formation of a hierarchical *** structure cannot be achieved without the participation of Fe3+*** from the significantly enhanced electrochemical surface areas and charge/mass transport due to the hierarchical structure together with the boosted intrinsic activity by electronic modulation of Fe3+,such FeCo LDH@Co3O4 electrode can deliver an industrial-level current density of 1,000 mA·cm-2 at a small overpotential of 392 mV for water *** assembled in a water electrolyzer,it delivers a current density of 100 mA·cm-2 at a low operation voltage of 1.61 *** by solar light,the electrolyzer demonstrates high solar-to-hydrogen efficiency of 18.15%with stable and reproducible *** results provide new insights for constructing hierarchical nanostructures for advanced water oxidation and other diverse applications.

关键词： electrocatalysts oxygen evolution reaction water splitting hierarchical structures layered double hydroxides

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Phosphorus-doping activates carbon nanotubes for efficient electroreduction of nitrogen to ammonia

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Nano Research 2020年第5期13卷 1376-1382页

作者： Lu-Pan Yuan Ze-Yuan Wu wen-jie jiang Tang Tang Shuai Niu Jin-Song Hu Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China

The electrochemical nitrogen reduction reaction(NRR)as an energy-efficient approach for ammonia synthesis is hampered by the low ammonia yield and ambiguous reaction ***,phosphorus-doped carbon nanotube(P-CNTs)is developed as an efficient metal-free electrocatalyst for NRR with a remarkable NH3 yield of 24.4μg·h^−1·mg^−*** partial current density of 0.61 mA·cm^−*** superior activity is found to be from P doping and highly conjugated CNTs *** and theoretical investigations discover that the electron-deficient phosphorus sites with Lewis acidity should be genuine active sites and NRR on P-CNTs follows the distal *** findings provide insightful understanding on NRR processes on P-CNTs,opening up opportunities for the rational design of highly-active cost-effective metal-free catalysts for electrochemical ammonia synthesis.

关键词： P-doped carbon nanotubes nitrogen reduction reaction active sites reaction pathway electrocatalysis

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Conditional gene manipulation:Cre-ating a new biological era

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2012年第7期13卷 511-524页

作者： Jian ZHANG Jing ZHAO wen-jie jiang Xi-wei SHAN Xiao-mei YANG Jian-gang GAO School of Life Science Shandong University Jinan 250100China

To solve the problem of embryonic lethality in conventional gene knockouts, site-specific recombinase （SSR） systems （Cre-loxP, FIp-FRT, and φC31） have been used for tissue-specific gene knockout. With the combination of an SSR system and inducible gene expression systems （tetracycline and tamoxifen）, stage-specific knockout and transgenic expression can be achieved. The application of this ＂SSR＋inducible＂ conditional tool to genomic manipulation can be extended in various ways. Alternatives to conditional gene targeting, such as conditional gene trapping, multipurpose conditional alleles, and conditional gene silencing, have been developed. SSR systems can also be used to construct precise disease models with point mutations and chromosomal abnormalities. With these exciting achievements, we are moving towards a new era in which the whole genome can be manipulated as we wish.

关键词： Site-specific recombinase Gene targeting Gene trapping Inducible systems φC31 system

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Helicobacter infection in hepatocellular carcinoma tissue

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World Journal of Gastroenterology 2006年第15期12卷 2335-2340页

作者： Shi-Ying Xuan Ning Li Xin Qiang Rong-Rong Zhou Yong-Xin Shi wen-jie jiang Qingdao Municipal Hospital Affiliated to School of Medicine Qingdao UniversityQingdao 266021 Shandong Province China Department of Microbiology School of Medicine Qingdao University Qingdao266021 Shandong Province China

AIM： To investigate whether Helicobacter species （Helicobacter spp.） could be detected in hepatocellular carcinoma （HCC） tissue.METHODS： Liver samples from 28 patients with hepatocellular carcinoma （HCC） diagnosed by histopathology were studied. Twenty-two patients with other liver diseases （5 with liver trauma, 7 with cavernous liver hemangioma, 6 with liver cyst and 4 with hepatolithiasis）, 25 patients with gastric cancer, 15 with colonic cancer and 15 with myoma of uterus served as controls. Two piceces of biopsy were obtained from each patient. One was cultured for Helicobacter spp. and extraction of DNA, the other was prepared for scanning electron microscopy （SEM） and in situ hybridization. The samples were cultured on Columbia agar plates with microaerobic techniques. Helicobacter spp. in biopsy from the studied subjects was detected by polymerase chain reaction （PCR） with Helicobacter spp. 16S rRNA primers. Amplified products were identified by Southern hybridization and sequenced further. Besides, other genes （vacA, cagA） specific for Helicobacter pylori （H pylorO were also detected by PCR. Helicobacter spp. in biopsies was observed by SEM. Transmission electron microscopy （TEM） was performed to identify the cultured positive Helicobacter spp. The presence of Helicobacter spp. was detected by in situ hybridization to confirm the type of Helicobacter. RESULTS： The positive rate of He/icobacter cultured in HCC and gastric cancer tissue was 10.7% （3/28） and 24%（6/25）, respectively. Helicobacter microorganisms were identified further by typical appearance on Gram staining, positive urease test and characteristic colony morphology on TEM. The bacterium was observed in adjacent hepatocytes of the two HCC samples by *** number of cocci was greater than that of bacilli. The bacterium was also found in four gastric cancer samples. PCR showed that the positive rate of HCC and gastric cancer samples was 60.7% and 72% respectively, while the controls were negat

关键词： Hepatocellular carcinoma Helicobacter infection

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Induced pluripotent stem cells:origins, applications, and future perspectives

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第12期14卷 1059-1069页

作者： Jing ZHAO wen-jie jiang Chen SUN Cong-zhe HOU Xiao-mei YANG Jian-gang GAO School of Life Sciences Shandong University

Embryonic stem(ES)cells are widely used for different purposes,including gene targeting,cell therapy,tissue repair,organ regeneration,and so ***,studies and applications of ES cells are hindered by ethical issues regarding cell *** circumvent ethical disputes,great efforts have been taken to generate ES cell-like cells,which are not derived from the inner cell mass of blastocyst-stage *** 2006,Yamanaka et *** reprogrammed mouse embryonic fibroblasts into ES cell-like cells called induced pluripotent stem(iPS)*** one year later,Yamanaka et *** Thomson et *** reprogrammed human somatic cells into iPS *** the first generation of iPS cells,they have now been derived from quite a few different kinds of cell *** particular,the use of peripheral blood facilitates research on iPS cells because of safety,easy availability,and plenty of cell *** iPS cells have been used for cell therapy,disease modeling,and drug *** this review,we describe the generations,applications,potential issues,and future perspectives of iPS cells.

关键词： Induced pluripotent stem cells Origin Peripheral blood cells Application Potential issues

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ATF6 aggravates apoptosis in early porcine embryonic development by regulating organelle homeostasis under high-temperature conditions

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Zoological Research 2023年第5期44卷 848-859页

作者： Ming-Hong Sun wen-jie jiang Xiao-Han Li Song-Hee Lee Geun Heo Dongjie Zhou Zhi Chen Xiang-Shun Cui Department of Animal Science Chungbuk National UniversityCheongjuSouth Korea 28644Korea College of Animal Science and Technology Yangzhou UniversityYangzhouJiangsu 225009China

Activating transcription factor 6(ATF6),one of the three sensor proteins in the endoplasmic reticulum(ER),is an important regulator of ER stress-induced ***6 resides in the ER and,upon activation,is translocated to the Golgi apparatus,where it is cleaved by site-1 protease(S1P)to generate an amino-terminal cytoplasmic *** recent studies have made progress in elucidating the regulatory mechanisms of ATF6,its function during early porcine embryonic development under high-temperature(HT)stress remains *** this study,zygotes were divided into four groups:control,HT,HT+ATF6 knockdown,and HT+PF(S1P inhibitor).Results showed that HT exposure induced ER stress,which increased ATF6 protein expression and led to a decrease in the blastocyst ***,ATF6 expression was knocked down in HT embryos under microinjection of ATF6 double-stranded RNA(dsRNA).Results revealed that ATF6 knockdown(ATF6-KD)attenuated the increased expression of CHOP,an ER stress marker,and Ca2+release induced by *** addition,ATF6-KD alleviated homeostasis dysregulation among organelles caused by HT-induced ER stress,and further reduced Golgi apparatus and mitochondrial dysfunction in HT ***2 is an important downstream effector of *** showed that ATF6-KD reduced the occurrence of AIFM2-mediated embryonic apoptosis at *** together,our findings suggest that ATF6 is a crucial mediator of apoptosis during early porcine embryonic development,resulting from HT-induced ER stress and disruption of organelle homeostasis.

关键词： ATF6 Embryo High temperature ER stress Organelle homeostasis

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Self-supported metal sulphide nanocrystals-assembled nanosheets on carbon paper as efficient counter electrodes for quantum-dotsensitized solar cells

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Science China Chemistry 2018年第10期61卷 1338-1344页

作者： Jian-Kun Sun Linlin Zhang Liang Yue Tang Tang wen-jie jiang Yun Zhang Zhenxiao Pan Xinhua Zhong Jin-Song Hu Li-Jun Wan CAS Key Laboratory of Molecular Nanostructure and Nanotechnology Beijing National Research Center for Molecular Sciences CAS Research/Education Center for Excellence in Molecule Science Institute of Chemistry Chinese Academy of Sciences Beijing 100190 China College of Materials and Energy South China Agricultural University Guangzhou 510642 China University of Chinese Academy of Sciences Beijing 100049 China

Developing efficient counter electrodes(CEs)and quantum dots made of earth-abundant and non-toxic elements is essential but still challenging for quantum dot-sensitized solar cells(QDSSCs).Here,we report a facile strategy to prepare self-supported and robust CoS_2and NiS nanocrystals-assembled nanosheets directly grown on carbon paper(MS_xNS@CP)as efficient counter electrodes for *** CEs integrate the merits of fast electron transfer from interconnected conductive scaffold,efficient mass transfer from hierarchically vertical nanosheet on 3D open substrate,as well as abundant highly active catalytic sites from metal sulphide nanocrystal *** a result,QDDSCs based on such CoS_2NS@CP and NiS NS@CP CEs achieve a PCE of8.88%and 7.53%,*** detailed analyses suggest that CoS_2NS@CP has the highest catalytic activity and shows the lowest charger transfer resistance,leading to the highest *** findings may inspire the design and exploration of other self-supported efficient CEs by integrating highly active catalysts onto 3D conductive networks for efficient QDSSCs.

关键词： QDSSCs counter electrode metal sulfides high efficiency nanostructures

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Outcomes of 13 ICSI-PGD cycles with ejaculated spermatozoa in patients with Klinefelter syndrome

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Asian Journal of Andrology 2016年第3期18卷 498-499页

作者： Tian-Xiang Ni Jun-Hao Yan Bo Wang Yue-Ting Zhu Hong-Chang Li Hong-Qiang Xie wen-jie jiang Zi-jiang Chen Center for Reproductive Medicine Shandong Provincial Hospital Affiliatedto Shandong University Shandong Provincial Key Laboratory of Reproductive Medicine Jinan 250021 China National Research Center for Assisted Reproductive Technology and Reproductive Genetics Jinan 250021 China The Key Laboratory for Reproductive Endocrinology of Ministry of Education Jinan 250021 China Department of Anesthesiology Shandong Provincial Hospital Affiliated to Shandong University Jinan 250021 China.

Dear Editor, Klinefelter syndrome （KS） is the most frequent genetic cause of infertility in men. Paternity can be achieved through intracytoplasmic sperm injection （ICSI） with spermatozoa recovered from ejaculated... 详细信息

关键词： @@

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Mitigating the Reconstruction of Metal Sulfides for Ultrastable Oxygen Evolution at High Current Density

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CCS Chemistry 2024年第1期6卷 137-148页

作者： Shuai Niu Tang Tang Yuanju Qu Yuyun Chen Hao Luo Hui Pan wen-jie jiang Jianan Zhang Jin-Song Hu Beijing National Laboratory for Molecular Sciences CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of SciencesBeijing 100190 Joint Key Laboratory of the Ministry of Education Institute of Applied Physics and Materials EngineeringUniversity of MacaoMacao SAR 999078 Department of Chemical Engineering University of MelbourneParkvilleVictoria 3010 College of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001 School of Chemical Sciences University of Chinese Academy of SciencesBeijing 100049 Dalian National Laboratory for Clean Energy Dalian 116023

Metal sulfides are emerging highly active electrocatalysts for the oxygen evolution reaction(OER),but still suffer from the instability caused by their inevitable reconstruction,especially at industrial-level current ***,it is discovered that Fe-incorporated Ni3S2 nanowires can deliver extraordinary durability with an ultralow potential degradation rate of 0.006 mV/h in alkaline electrolytes made with fresh water and seawater at a benchmark of 500 mA cm^(-2) while meeting the industrial activity requirement for overpotential less than 300 mV(290 mV).Systematic experiments and theoretical simulations suggest that after forming the S-doped NiFeOOH shell to boost intrinsic activity,Fe incorporation effectivelymitigates the reconstruction of the Ni_(3)S_(2) nanowire core by restraining Ni oxidation and S dissolution,justifying the *** work highlights the significance of circumventing reconstruction and provides a strategy to explore practical chalcogenides-based OER electrocatalysts.

关键词： oxygen evolution reaction sulfur-doped NiFeOOH NiFe sulfides nanowire ultrastable high current density

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Selective Se doping of NiFe_(2)O_(4) on an active NiOOH scaffold for efficient and robust water oxidation

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Chinese Journal of Catalysis 2021年第8期42卷 1395-1403页

作者： Yuan Huang Jian-Jun Wang Yang Zou Li-wen jiang Xiao-Long Liu wen-jie jiang Hong Liu Jin-Song Hu State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Shenzhen Research Institute of Shandong University Shenzhen 518057GuangdongChina Institute for Advanced Interdisciplinary Research(IAIR) University of JinanJinan 250022ShandongChina Beijing National Laboratory for Molecular Sciences(BNLMS) CAS Key Laboratory of Molecular Nanostructure and NanotechnologyInstitute of ChemistryChinese Academy of ScienceBeijing 100190China

There remains a challenge in designing electrocatalysts for water oxidation to create highly efficient catalytic sites for the oxygen evolution reaction(OER)while maintaining their robustness at large ***,an etching-assisted synthesis approach was developed to integrate highly active NiFe2O4 nanoparticles with a robust and active NiOOH scaffold directly on commercial stainless steel.A precise selenization strategy was then introduced to achieve selective Se doping of NiFe2O4 to further enhance its intrinsic OER activity while maintaining a three-dimensional NiOOH nanosheet array as a robust scaffold for prompt mass transfer and gas *** resulting NiFe2O4-xSex/NiOOH electrode exhibited superior electrocatalytic activity with low overpotentials of 153 and 259 mV to deliver benchmark current densities of 10 and 500 mA cm^(−2),*** importantly,the catalyst exhibited remarkable durability at a stable current output of 100 mA cm^(−2)for hundreds of *** findings may open up opportunities for exploring efficient and robust electrocatalysts for scalable hydrogen production with practical materials.

关键词： Water oxidation Selective selenization NiFe2O4 NiOOH Heterostructure

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