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RISS 인기검색어
- 검색키워드
- 저자 : Jiabin Zhu (검색결과 3 건)
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Zhu, Shijin,Li, Li,Liu, Jiabin,Wang, Hongtao,Wang, Tian,Zhang, Yuxin,Zhang, Lili,Ruoff, Rodney S.,Dong, Fan American Chemical Society 2018 ACS NANO Vol.12 No.2
<P>Two-dimensional birnessite has attracted attention for electrochemical energy storage because of the presence of redox active Mn<SUP>4+</SUP>/Mn<SUP>3+</SUP> ions and spacious interlayer channels available for ions diffusion. However, current strategies are largely limited to enhancing the electrical conductivity of birnessite. One key limitation affecting the electrochemical properties of birnessite is the poor utilization of the MnO<SUB>6</SUB> unit. Here, we assemble β-MnO<SUB>2</SUB>/birnessite core–shell structure that exploits the exposed crystal face of β-MnO<SUB>2</SUB> as the core and ultrathin birnessite sheets that have the structure advantage to enhance the utilization efficiency of the Mn from the bulk. Our birnessite that has sheets parallel to each other is found to have unusual crystal structure with interlayer spacing, Mn(III)/Mn(IV) ratio and the content of the balancing cations differing from that of the common birnessite. The substrate directed growth mechanism is carefully investigated. The as-prepared core–shell nanostructures enhance the exposed surface area of birnessite and achieve high electrochemical performances (for example, 657 F g<SUP>–1</SUP> in 1 M Na<SUB>2</SUB>SO<SUB>4</SUB> electrolyte based on the weight of parallel birnessite) and excellent rate capability over a potential window of up to 1.2 V. This strategy opens avenues for fundamental studies of birnessite and its properties and suggests the possibility of its use in energy storage and other applications. The potential window of an asymmetric supercapacitor that was assembled with this material can be enlarged to 2.2 V (in aqueous electrolyte) with a good cycling ability.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/ancac3/2018/ancac3.2018.12.issue-2/acsnano.7b03431/production/images/medium/nn-2017-03431b_0007.gif'></P><P><A href='http://pubs.acs.org/doi/suppl/10.1021/nn7b03431'>ACS Electronic Supporting Info</A></P>
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Capture of CO2 from coal using chemical-looping combustion: Process simulation
Ming Luo,Shuzhong Wang,Jiabin Zhu,Longfei Wang,Mingming Lv 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.3
Coal direct chemical-looping combustion (CLC) and coal gasification CLC processes are the two basicapproaches for the application of the CLC technology with coal. Two different combined cycles with the overall thermalinput of 1,000MW (LHV) were proposed and simulated, respectively, with NiO/NiAl2O4 as an oxygen carrierusing the ASPEN software. The oxygen carrier circulation ratio in two CLC processes was calculated, and the influenceof the CLC process parameters on the system performance such as air reactor temperature and the turbine inletsupplementary firing temperature was investigated. Results found were that the circulation ratio of the oxygen carrierin the coal gasification CLC process is smaller than that in the coal direct CLC process. In the coal direct CLCcombined system, the system efficiency is 49.59% with the CO2 capture efficiency of almost 100%, assuming the airreactor temperature at 1,200 oC and the fuel reactor temperature at 900 oC. As a comparison, the system efficiency ofcoal gasification CLC combined system is 40.53% with the CO2 capture efficiency of 85.2% when the turbine inlet temperatureis at 1,350 oC. Increasing the supplementary firing rate or decreasing the air reactor temperature can increasethe system efficiency, but these will reduce the CO2 capture efficiency.
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Youcui Xu,Yi Wu,Yi Hu,Mengran Xu,Yanyan Liu,Yuting Ding,Jing Chen,Xiaowan Huang,Longping Wen,Jiabin Li,Chen Zhu 한국생체재료학회 2023 생체재료학회지 Vol.27 No.00
Background The high mortality associated with drug-resistant bacterial infections is an intractable clinical problem resulting from the low susceptibility of these bacteria to antibiotics and the high incidence of recurrent infections. Methods Herein, a photosynthetic bacteria-based multiplex system (Rp@Al) composed of natural Rhodopseudomonas palustris (Rp) and Food and Drug Administration-approved aluminum (Al) adjuvant, was developed to combat drug-resistant bacterial infections and prevent their recurrence. We examined its photothermal performance and in vitro and in vivo antibacterial ability; revealed its protective immunomodulatory effect; verified its preventative effect on recurrent infections; and demonstrated the system’s safety. Results Rp@Al exhibits excellent photothermal properties with an effective elimination of methicillin-resistant Staphylococcus aureus (MRSA). In addition, Rp@Al enhances dendritic cell activation and further triggers a T helper 1 ( TH1)/TH2 immune response, resulting in pathogen-specific immunological memory against recurrent MRSA infection. Upon second infection, Rp@Al-treated mice show significantly lower bacterial burden, faster abscess recovery, and higher survival under near-lethal infection doses than control mice. Conclusions This innovative multiplex system, with superior photothermal and immunomodulatory effects, presents great potential for the treatment and prevention of drug-resistant bacterial infections.
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