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Article ; Online: Atmospheric Optical Turbulence Characteristics over the Ocean Relevant to Astronomy and Atmospheric Physics

Manman Xu / Shiyong Shao / Ningquan Weng / Liangping Zhou / Qing Liu / Yuefeng Zhao

Applied Sciences, Vol 11, Iss 10548, p

2021 Volume 10548

Abstract: Due to the space and time constraints of turbulence measurement equipment and the experiment scene, it is difficult to obtain the atmosphere refractive index structure constant over the ocean. In this paper, the characteristics of atmospheric optical ... ...

Abstract	Due to the space and time constraints of turbulence measurement equipment and the experiment scene, it is difficult to obtain the atmosphere refractive index structure constant over the ocean. In this paper, the characteristics of atmospheric optical turbulence in offshore and open ocean conditions are summarized by analyzing the meteorological data obtained from two ocean atmospheric optical parameter field experiments. Because of the influence of land undersurface, the turbulence strength in offshore conditions is roughly the same as that on land and presents different characteristics in open ocean. Compared with the offshore area, the turbulence strength over the open ocean near-surface decreases during the day and increases at night, and the diurnal variation characteristics weaken. The turbulence strength profiles over the offshore area show different characteristics at different times, where the turbulence strength in the morning is higher than that in the evening. By retrieving the meteorological factors affecting the turbulence, it is found that the temperature gradient and wind shear are in good agreement with turbulence strength in both offshore and open ocean areas. Furthermore, the integrated parameters for astronomy and optical telecommunication are derived from profiles over the offshore and open ocean areas. It is of great significance to research the turbulent characteristics of ocean atmosphere for optical transmission and astronomical observations.
Keywords	optical turbulence ; astroclimatic parameter ; atmospheric physics ; ocean and atmospheric optics ; Technology ; T ; Engineering (General). Civil engineering (General) ; TA1-2040 ; Biology (General) ; QH301-705.5 ; Physics ; QC1-999 ; Chemistry ; QD1-999
Subject code	551
Language	English
Publishing date	2021-11-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Enhancing polysulfide confinement and conversion in meso-/microporous core–shelled MoC/NC microspheres for lithium–sulfur batteries

Li, Wanli / Jin, Xiangfeng / Xiao, Liangping / Li, Xingyun / Xu, Qingchi / Weng, Jian / Xu, Jun

Journal of materials chemistry A. 2021 Nov. 30, v. 9, no. 46

2021

Abstract: Porous carbon-based materials are employed as sulfur hosts to overcome the problems of insulating nature and volume expansion during lithiation of sulfur cathodes in lithium–sulfur (Li–S) batteries to some degree. However, the shuttle effect and sluggish ...

Abstract	Porous carbon-based materials are employed as sulfur hosts to overcome the problems of insulating nature and volume expansion during lithiation of sulfur cathodes in lithium–sulfur (Li–S) batteries to some degree. However, the shuttle effect and sluggish redox reaction kinetics of sulfur species result in unsatisfactory cycle life and sulfur utilization, hampering the practical application of Li–S batteries. In this work, meso-/microporous core-shelled MoC nanocrystal-embedded N-doped carbon microspheres (MoC/NC CSMSs) were prepared and further used as sulfur hosts. The tailored mesoporous core and microporous-thin shell cooperate to guarantee a high sulfur loading, good electrolyte penetration, improved structural stability, and relieved shuttle effect. Besides, the uniformly distributed MoC nanocrystals enhance the affinity to lithium polysulfides (LiPSs) via the formation of the Mo–S bond and accelerate the conversion kinetics of LiPSs by catalyzing the formation and decomposition of Li₂S clusters. After sulfur loading, the MoC/NC/S CSMS electrode exhibits remarkable lithium storage properties with a high reversible capacity of 1370.3 mA h g⁻¹ at 0.1C, outstanding rate performance, and ultra-long cycle life with a low capacity decay rate of 0.034% per cycle for 500 cycles at 1C.
Keywords	carbon ; electrolytes ; lithium ; microparticles ; nanocrystals ; porous media ; reaction kinetics ; redox reactions ; sulfur
Language	English
Dates of publication	2021-1130
Size	p. 26051-26060.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	2702232-8
ISSN	2050-7496 ; 2050-7488
ISSN (online)	2050-7496
ISSN	2050-7488
DOI	10.1039/d1ta06863f
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Adaptive Bifunctional Electrocatalyst of Amorphous CoFe Oxide @ 2D Black Phosphorus for Overall Water Splitting.

Li, Xingyun / Xiao, Liangping / Zhou, Ling / Xu, Qingchi / Weng, Jian / Xu, Jun / Liu, Bin

Angewandte Chemie (International ed. in English)

2020 Volume 59, Issue 47, Page(s) 21106–21113

Abstract: Water electrolysis offers a promising green technology to tackle the global energy and environmental crisis, but its efficiency is greatly limited by the sluggish reaction kinetics of both the cathodic hydrogen evolution reaction (HER) and anodic oxygen ... ...

Abstract	Water electrolysis offers a promising green technology to tackle the global energy and environmental crisis, but its efficiency is greatly limited by the sluggish reaction kinetics of both the cathodic hydrogen evolution reaction (HER) and anodic oxygen evolution reaction (OER). In this work, by growing amorphous multi-transition-metal (cobalt and iron) oxide on two-dimensional (2D) black phosphorus (BP), we develop a bifunctional electrocatalyst (CoFeO@BP), which is able to efficiently catalyze both HER and OER. The overpotentials for the hybrid CoFeO@BP catalyst to reach a current density of 10 mA cm
Language	English
Publishing date	2020-09-11
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2011836-3
ISSN	1521-3773 ; 1433-7851
ISSN (online)	1521-3773
ISSN	1433-7851
DOI	10.1002/anie.202008514
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Holey amorphous FeCoO-coated black phosphorus for robust polysulfide adsorption and catalytic conversion in lithium–sulfur batteries

Zhang, Guodong / Wang, Shanshan / Zeng, Xinqian / Li, Xingyun / Xiao, Liangping / Chen, Kai / Lu, Qinhuan / Xu, Qingchi / Weng, Jian / Xu, Jun

Journal of materials chemistry A. 2022 May 31, v. 10, no. 21

2022

Abstract: The application of lithium–sulfur (Li–S) batteries is hindered by the severe shuttle effect and sluggish redox conversion kinetics of lithium polysulfides (LiPSs). Herein, holey amorphous dual transition metal (cobalt and iron) oxide-coated black ... ...

Abstract	The application of lithium–sulfur (Li–S) batteries is hindered by the severe shuttle effect and sluggish redox conversion kinetics of lithium polysulfides (LiPSs). Herein, holey amorphous dual transition metal (cobalt and iron) oxide-coated black phosphorus nanosheets (BP@FeCoO) have been synthesized and utilized as a sulfur host in Li–S batteries. From the compositional outlook, compared with the individual counterparts, the hybrid material of BP and amorphous FeCoO containing rich oxygen vacancies has enhanced adsorption ability and catalytic activity toward LiPSs, as well as improved electrical conductivity and Li-ion diffusion rate. From the structural feature perspective, the 2D nanosheets decorated with abundant meso/microporous channels greatly enlarge the surface area of the BP@FeCoO electrode, which offers sufficient active sites for accommodating sulfur active species and provides buffer space to withstand the volume changes during the charge/discharge process. Due to these compositional and structural superiorities, the Li–S battery with BP@FeCoO/S electrode exhibited excellent electrochemical performance with high cycle stability (fading rate of 0.040% per cycle at 1C) and outstanding rate capability (644.3 mA h g⁻¹ at 5C). More impressively, with a high sulfur loading of 6.0 mg cm⁻², the BP@FeCoO/S electrode showed a high capacity of 903.9 mA h g⁻¹ at 0.2C.
Keywords	adsorption ; catalytic activity ; cobalt ; electrical conductivity ; electrochemistry ; electrodes ; iron ; lithium ; lithium batteries ; nanosheets ; oxygen ; phosphorus ; porous media ; sulfur ; surface area
Language	English
Dates of publication	2022-0531
Size	p. 11676-11683.
Publishing place	The Royal Society of Chemistry
Document type	Article
ZDB-ID	2702232-8
ISSN	2050-7496 ; 2050-7488
ISSN (online)	2050-7496
ISSN	2050-7488
DOI	10.1039/d2ta01215d
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Regulating the reactivity of black phosphorus via protective chemistry.

Liu, Xiao / Xiao, Liangping / Weng, Jian / Xu, Qingchi / Li, Wanli / Zhao, Chunhui / Xu, Jun / Zhao, Yanli

Science advances

2020 Volume 6, Issue 46

Abstract: Rationally regulating the reactivity of molecules or functional groups is common in organic chemistry, both in laboratory and industry synthesis. This concept can be applied to inorganic nanomaterials, particularly two-dimensional black phosphorus (BP) ... ...

Abstract	Rationally regulating the reactivity of molecules or functional groups is common in organic chemistry, both in laboratory and industry synthesis. This concept can be applied to inorganic nanomaterials, particularly two-dimensional black phosphorus (BP) nanosheets. The high reactivity of few-layer (even monolayer) BP is expected to be "shut down" when not required and to be resumed upon application. Here, we demonstrate a protective chemistry-based methodology for regulating BP reactivity. The protective step initiates from binding Al
Language	English
Publishing date	2020-11-11
Publishing country	United States
Document type	Journal Article
ZDB-ID	2810933-8
ISSN	2375-2548 ; 2375-2548
ISSN (online)	2375-2548
ISSN	2375-2548
DOI	10.1126/sciadv.abb4359
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Robust Amphiphobic Few-Layer Black Phosphorus Nanosheet with Improved Stability.

Liu, Xiao / Bai, Yunfei / Xu, Jun / Xu, Qingchi / Xiao, Liangping / Sun, Liping / Weng, Jian / Zhao, Yanli

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

2019 Volume 6, Issue 23, Page(s) 1901991

Abstract: Few-layer black phosphorus (FL-BP) has been intensively studied due to its attractive properties and great potential in electronic and optoelectronic applications. However, the intrinsic instability of FL-BP greatly limits its practical application. In ... ...

Abstract	Few-layer black phosphorus (FL-BP) has been intensively studied due to its attractive properties and great potential in electronic and optoelectronic applications. However, the intrinsic instability of FL-BP greatly limits its practical application. In this study, the amphiphobic FL-BP is achieved by functionalization of 1
Language	English
Publishing date	2019-09-30
Publishing country	Germany
Document type	Journal Article
ZDB-ID	2808093-2
ISSN	2198-3844
ISSN	2198-3844
DOI	10.1002/advs.201901991
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Colorimetric Biosensor for Detection of Cancer Biomarker by Au Nanoparticle-Decorated Bi

Xiao, Liangping / Zhu, Aimei / Xu, Qingchi / Chen, Ying / Xu, Jun / Weng, Jian

ACS applied materials & interfaces

2017 Volume 9, Issue 8, Page(s) 6931–6940

Abstract: The colorimetric biosensors have attracted intensive interest; however, their relatively low sensitivity limits their applications in clinic detection. Herein, we develop an effective colorimetric biosensor based on highly catalytic active Au ... ...

Abstract	The colorimetric biosensors have attracted intensive interest; however, their relatively low sensitivity limits their applications in clinic detection. Herein, we develop an effective colorimetric biosensor based on highly catalytic active Au nanoparticle-decorated Bi
MeSH term(s)	Biosensing Techniques ; Colorimetry ; Gold ; Limit of Detection ; Nanoparticles ; Organoselenium Compounds
Chemical Substances	Organoselenium Compounds ; Gold (7440-57-5) ; bismuth selenide (9I1Y040903)
Language	English
Publishing date	2017-02-20
Publishing country	United States
Document type	Journal Article
ISSN	1944-8252
ISSN (online)	1944-8252
DOI	10.1021/acsami.6b15750
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article ; Online: Robust Amphiphobic Few‐Layer Black Phosphorus Nanosheet with Improved Stability

Xiao Liu / Yunfei Bai / Jun Xu / Qingchi Xu / Liangping Xiao / Liping Sun / Jian Weng / Yanli Zhao

Advanced Science, Vol 6, Iss 23, Pp n/a-n/a (2019)

2019

Abstract: Abstract Few‐layer black phosphorus (FL‐BP) has been intensively studied due to its attractive properties and great potential in electronic and optoelectronic applications. However, the intrinsic instability of FL‐BP greatly limits its practical ... ...

Abstract	Abstract Few‐layer black phosphorus (FL‐BP) has been intensively studied due to its attractive properties and great potential in electronic and optoelectronic applications. However, the intrinsic instability of FL‐BP greatly limits its practical application. In this study, the amphiphobic FL‐BP is achieved by functionalization of 1H,1H,2H,2H‐perfluorooctyltrichlorosilane (PFDTS) on the surface of FL‐BP. The obtained PFDTS coated FL‐BP (FL‐BP/PFDTS) demonstrates enhanced stability, which is not observed during significant degradation for 2 months in high moisture content environment (95% humidity). Particularly, attributing to the surface amphiphobicity, FL‐BP/PFDTS exhibits strong surface water repellency in the presence of oleic acid (as the contaminant), while other passivation coating layers (such as hydrophilic or hydrophobic coating) become hydrophilicity under such conditions. Owing to this advantage, the obtained FL‐BP/PFDTS demonstrates enhanced stability in high moisture content environment for 2 months, even though the surface is contaminated by oil liquid or other organic solvents (such as oleic acid, CH2Cl2, and N‐methyl‐2‐pyrrolidone). The passivation of FL‐BP by amphiphobic coating provides an effective approach for FL‐BP stabilization toward future applications.
Keywords	amphiphobic surfaces ; black phosphorus ; enhanced stability ; fluorinated coating ; nanosheets ; Science ; Q
Subject code	620
Language	English
Publishing date	2019-12-01T00:00:00Z
Publisher	Wiley
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Colorimetric Biosensor for Detection of Cancer Biomarker by Au Nanoparticle-Decorated Bi2Se3 Nanosheets

Xiao, Liangping / Chen Ying / Weng Jian / Xu Jun / Xu Qingchi / Zhu Aimei

ACS Applied Materials & Interfaces. 2017 Mar. 01, v. 9, no. 8

2017

Abstract	The colorimetric biosensors have attracted intensive interest; however, their relatively low sensitivity limits their applications in clinic detection. Herein, we develop an effective colorimetric biosensor based on highly catalytic active Au nanoparticle-decorated BiâSeâ (Au/BiâSeâ) nanosheets. Au/BiâSeâ nanosheets are facilely synthesized by simply sonicating Au precursor with the as-synthesized BiâSeâ nanosheets in aqueous solution. Because of the low redox potential and typical topological insulating properties, BiâSeâ nanosheets is capable of providing and accumulating electrons on its surface. Such unique properties of BiâSeâ nanosheets contribute to strong synergistic catalytic effects with Au nanoparticles, particularly when Au/BiâSeâ nanosheets are utilized for catalyzing the reduction of 4-nitrophenol (4-NP) by NaBHâ (K = 386.67 sâÂ¹gâÂ¹). The excellent catalytic activity of Au/BiâSeâ nanosheets can be âswitched offâ upon treatment of antibody of cancer biomarker such as anticarcinoembryonic antibody (anti-CEA). Addition of the corresponding antigen such as cancer biomarker carcinoembryonic antibody (CEA) can successively help âswitch onâ the catalytic activity of Au/BiâSeâ nanosheets, where the resuming degree however depends on the antigen concentration. This cancer biomarker depended catalytic behavior therefore allows Au/BiâSeâ nanosheets to be employed as a colorimetric sensor for detection of a particular cancer biomarker, for the reduction of 4-nitrophenol (4-NP) by NaBHâ itself involves apparent color change. The sensor shows high sensitivity and selectivity for the cancer biomarker, even for a concentration as low as 160 pg/mL for CEA, which fully satisfies the requirement for real clinical applications. The developed colorimetric sensor shows good generality for detection of different types of cancer biomarkers, such as Î±-fetoprotein (AFP) and prostate-specific antigen (PSA). Furthermore, real clinic sample analyzing result shows that the prepared biosensor is efficient for detection of CEA, providing an alternative method in cancer diagnosis.
Keywords	antibodies ; antigens ; aqueous solutions ; biomarkers ; biosensors ; catalytic activity ; color ; colorimetry ; electrons ; gold ; nanogold ; nanosheets ; neoplasms ; p-nitrophenol ; prostate-specific antigen ; redox potential ; topology
Language	English
Dates of publication	2017-0301
Size	p. 6931-6940.
Publishing place	American Chemical Society
Document type	Article
ISSN	1944-8252
DOI	10.1021%2Facsami.6b15750
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Preparation and characterization of hydrophobic Pt-Fe catalysts with enhanced catalytic activities for interface hydrogen isotope separation.

Hu, Sheng / Hou, Jingwei / Xiong, Liangping / Weng, Kuiping / Ren, Xingbi / Luo, Yangming

Journal of hazardous materials

2012 Volume 209-210, Page(s) 478–483

Abstract: Liquid phase catalytic exchange reactions are mainly used for separation of hydrogen isotopes from liquid water. Based on the carbon-supported Pt and Pt-Fe catalysts, different hydrophobic Pt and Pt-Fe catalysts were fabricated for use in such reactions. ...

Abstract	Liquid phase catalytic exchange reactions are mainly used for separation of hydrogen isotopes from liquid water. Based on the carbon-supported Pt and Pt-Fe catalysts, different hydrophobic Pt and Pt-Fe catalysts were fabricated for use in such reactions. The characterization results indicated the Pt-Fe alloy was formed in the Pt(3)Fe/C catalyst prepared using a citric-acid-assisted NaBH(4) reduction method (CA-NaBH(4)). However, there were more Fe oxide species and the Fe components existed independently in the Pt(3)Fe/C catalyst prepared by the modified microwave-irradiated ethyl glycol reduction procedure (MI). Performance tests demonstrated that the activities of the hydrophobic Pt-Fe catalysts with appropriate Fe/Pt ratios, using the MI method, were enhanced because of the addition of Fe. In contrast, the hydrophobic Pt(3)Fe catalyst prepared using the CA-NaBH(4) method had lower catalytic activity than pure Pt. Possible reasons were explained by reaction mechanisms of double routes of LPCE catalysis.
MeSH term(s)	Catalysis ; Hydrogen/chemistry ; Iron/chemistry ; Isotopes ; Microscopy, Electron, Transmission ; Platinum/chemistry ; X-Ray Diffraction
Chemical Substances	Isotopes ; Platinum (49DFR088MY) ; Hydrogen (7YNJ3PO35Z) ; Iron (E1UOL152H7)
Language	English
Publishing date	2012-03-30
Publishing country	Netherlands
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	1491302-1
ISSN	1873-3336 ; 0304-3894
ISSN (online)	1873-3336
ISSN	0304-3894
DOI	10.1016/j.jhazmat.2012.01.058
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