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  1. Article ; Online: Construction and Implementation of Standard System for Rural Household Toilets in China

    Xiaolei Ma / zhenyu Yun / Yaoping Ding / yanlong Zhang / yutong Wang / liangbing Hu

    E3S Web of Conferences, Vol 248, p

    2021  Volume 03016

    Abstract: Promoting the "toilet revolution" in rural areas is an important measure to improve the rural living environment and realize rural revitalization. Standardizing the construction and management of rural household toilets by means of standardization is of ... ...

    Abstract Promoting the "toilet revolution" in rural areas is an important measure to improve the rural living environment and realize rural revitalization. Standardizing the construction and management of rural household toilets by means of standardization is of great significance for the high-quality completion of the "toilet revolution". Based on the policy and current situation of the transformation of rural household toilets in China, this paper studies and analyzes the current situation of standardization of rural household toilets, expounds the construction principles of standard system for rural household toilets, constructs the standard system framework including comprehensive general use, facilities and equipment, construction acceptance, management and protection, and finally puts forward some countermeasures and suggestions to promote the implementation of the standard system.
    Keywords Environmental sciences ; GE1-350
    Subject code 690
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher EDP Sciences
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  2. Article ; Online: Cellulose Nanocomposites of Cellulose Nanofibers and Molecular Coils

    Doug Henderson / Xin Zhang / Yimin Mao / Liangbing Hu / Robert M. Briber / Howard Wang

    Journal of Composites Science, Vol 5, Iss 200, p

    2021  Volume 200

    Abstract: All-cellulose nanocomposites have been produced from cellulose nanofiber (CNF) suspensions and molecular coil solutions. Morphology and small-angle neutron scattering studies show the exfoliation and dispersion of CNFs in aqueous suspensions. Cellulose ... ...

    Abstract All-cellulose nanocomposites have been produced from cellulose nanofiber (CNF) suspensions and molecular coil solutions. Morphology and small-angle neutron scattering studies show the exfoliation and dispersion of CNFs in aqueous suspensions. Cellulose solutions in mixtures of ionic liquid and organic solvents were homogeneously mixed with CNF suspensions and subsequently dried to yield cellulose composites comprising CNF and amorphous cellulose over the entire composition range. Tensile tests show that stiffness and strength quantities of cellulose nanocomposites are the highest value at ca. 20% amorphous cellulose, while their fracture strain and toughness are the lowest. The inclusion of amorphous cellulose in cellulose nanocomposites alters their water uptake capacity, as measured in the ratio of the absorbed water to the cellulose mass, reducing from 37 for the neat CNF to less than 1 for a composite containing 35% or more amorphous cellulose. This study offers new insights into the design and production of all-cellulose nanocomposites.
    Keywords cellulose nanocomposite ; all-cellulose composite ; cellulose nanofiber ; cellulose molecular coil ; water resistance ; mechanical properties ; Technology ; T ; Science ; Q
    Subject code 541
    Language English
    Publishing date 2021-07-01T00:00:00Z
    Publisher MDPI AG
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  3. Article ; Online: Na Metal Anode

    Wei Luo / Liangbing Hu

    ACS Central Science, Vol 1, Iss 8, Pp 420-

    “Holy Grail” for Room-Temperature Na-Ion Batteries?

    2015  Volume 422

    Keywords Chemistry ; QD1-999
    Language English
    Publishing date 2015-11-01T00:00:00Z
    Publisher American Chemical Society
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  4. Article ; Online: Thermoelectric properties enhancement of p-type composite films using wood-based binder and mechanical pressing

    Eunhwa Jang / Aswani Poosapati / Nathaniel Jang / Liangbing Hu / Michael Duffy / Marc Zupan / Deepa Madan

    Scientific Reports, Vol 9, Iss 1, Pp 1-

    2019  Volume 10

    Abstract: Abstract Thermoelectric generators (TEGs) fabricated using additive manufacturing methods are attractive because they offer the advantages of scalability, lower cost, and potentially higher power density than conventional TEGs. Additive manufacturing of ... ...

    Abstract Abstract Thermoelectric generators (TEGs) fabricated using additive manufacturing methods are attractive because they offer the advantages of scalability, lower cost, and potentially higher power density than conventional TEGs. Additive manufacturing of TEGs requires active thermoelectric particles to be dispersed in a polymer binder to synthesize printable slurries, and printed films to be subsequently subjected to a long and high temperature curing to enhance their thermoelectic properties. A large amount of polymer binder present in composite films results in a sizable loss in the electrical conductivity. In addition, a long and high-temperature film curing results is a slow and energy intensive fabrication process. In this work, we demonstrate the feasibility of using a small amount (≤10−3 wt ratio) of novel nanofiber cellulose (NFC) as a binder to provide sufficient adhesion strength to hold the TE particles together in the composite films. We also demonstrate a pressure induced densification process to enhance the thermoelectic properties of printed composite films. This novel approach has the potential to fundamentally transform the manufacting method for printing TEGs by eliminating the need of long-duration and high-temperature curing. A higher applied pressure leads to a compact packing and densification of films resulting in an improvement in the electrical conductivity. The highest power factor achieved for best performing p-type thermoelectric-NFC composite film subjected to pressure induced densification is 611 μW/m-K2.
    Keywords Medicine ; R ; Science ; Q
    Subject code 620
    Language English
    Publishing date 2019-05-01T00:00:00Z
    Publisher Nature Publishing Group
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  5. Article ; Online: Publisher Correction

    Xizheng Wang / Yunhao Zhao / Gang Chen / Xinpeng Zhao / Chuan Liu / Soumya Sridar / Luis Fernando Ladinos Pizano / Shuke Li / Alexandra H. Brozena / Miao Guo / Hanlei Zhang / Yuankang Wang / Wei Xiong / Liangbing Hu

    Nature Communications, Vol 13, Iss 1, Pp 1-

    Ultrahigh-temperature melt printing of multi-principal element alloys

    2022  Volume 1

    Keywords Science ; Q
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  6. Article ; Online: Ultrahigh-temperature melt printing of multi-principal element alloys

    Xizheng Wang / Yunhao Zhao / Gang Chen / Xinpeng Zhao / Chuan Liu / Soumya Sridar / Luis Fernando Ladinos Pizano / Shuke Li / Alexandra H. Brozena / Miao Guo / Hanlei Zhang / Yuankang Wang / Wei Xiong / Liangbing Hu

    Nature Communications, Vol 13, Iss 1, Pp 1-

    2022  Volume 8

    Abstract: Multi-principal element alloy (MPEA) 3D printing is challenging due to the tradeoff between achieving high-temperature and sufficient heating zone. Here, the authors report an ultrahigh-temperature melt printing method that can achieve rapid melting and ... ...

    Abstract Multi-principal element alloy (MPEA) 3D printing is challenging due to the tradeoff between achieving high-temperature and sufficient heating zone. Here, the authors report an ultrahigh-temperature melt printing method that can achieve rapid melting and uniform elemental mixing for MPEA fabrication.
    Keywords Science ; Q
    Language English
    Publishing date 2022-11-01T00:00:00Z
    Publisher Nature Portfolio
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  7. Article ; Online: Rapid Synthesis and Sintering of Metals from Powders

    Chengwei Wang / Wei Zhong / Weiwei Ping / Zhiwei Lin / Ruiliu Wang / Jiaqi Dai / Miao Guo / Wei Xiong / Ji‐Cheng Zhao / Liangbing Hu

    Advanced Science, Vol 8, Iss 12, Pp n/a-n/a (2021)

    2021  

    Abstract: Abstract Powder to bulk processes, such as additive manufacturing and metal injection molding (MIM), have enabled great potential for complex metal designing and manufacturing. However, additive manufacturing process normally introduces a high residue ... ...

    Abstract Abstract Powder to bulk processes, such as additive manufacturing and metal injection molding (MIM), have enabled great potential for complex metal designing and manufacturing. However, additive manufacturing process normally introduces a high residue stress and textures due to the locally intense temperature. MIM is an excellent batch manufacturing process; nevertheless, it is not suitable for rapid screening and development of new metal compositions and structures due to the slow sintering process. Herein, an ultrafast high‐temperature sintering (UHS) process is reported that enables the rapid synthesis and sintering of bulk metals/alloys and intermetallic compounds. In this process, elemental powders are mixed and pressed into pellets, followed by UHS sintering in just seconds at a temperature between 1000 and 3000 °C. Three representative compositions, including pure metals, intermetallics, and multielement alloys, are demonstrated with a broad range of melting points. The UHS process for metal sintering is nonmaterials specific, in addition to being extremely rapid, which make it suitable for materials discovery. Furthermore, the sintering method does not apply pressure to the samples, making it compatible with 3D printing and other additive manufacturing processes of complex structures. This rapid sintering technique will greatly facilitate the development and manufacturing of metals and alloys.
    Keywords intermetallic compounds ; powder metallurgy ; refractory metals ; ultrafast sintering ; Science ; Q
    Subject code 670
    Language English
    Publishing date 2021-06-01T00:00:00Z
    Publisher Wiley
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  8. Article: Using a fully recyclable dicarboxylic acid for producing dispersible and thermally stable cellulose nanomaterials from different cellulosic sources

    Jia, Chao / Liheng Chen / Ziqiang Shao / Umesh P. Agarwal / Liangbing Hu / J. Y. Zhu

    Cellulose. 2017 June, v. 24, no. 6

    2017  

    Abstract: We fabricated cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) from different cellulose materials (bleached eucalyptus pulp (BEP), spruce dissolving pulp (SDP) and cotton based qualitative filter paper (QFP) using concentrated oxalic acid ... ...

    Abstract We fabricated cellulose nanocrystals (CNCs) and cellulose nanofibrils (CNFs) from different cellulose materials (bleached eucalyptus pulp (BEP), spruce dissolving pulp (SDP) and cotton based qualitative filter paper (QFP) using concentrated oxalic acid hydrolysis and subsequent mechanical fibrillation (for CNFs). The process was green as acid can be easily recovered, and the prepared cellulose nanomaterials were carboxylated and thermally stable. In detail, the CNC yield from the different materials was similar. After hydrolysis, the DP of the cellulose materials decreased substantially, whereas the mechanical fibrillation of the cellulosic solid residues (CSRs) did not dramatically reduce the DP of cellulose. CNCs with different aspect ratios were produced from different starting materials by oxalic acid hydrolysis. The CNCs and CNFs obtained from BEP and QFP possessed more uniform dimensions than those from SDP. On the other hand, CNFs derived from SDP presented the best suspension stability. FTIR analyses verified esterification of cellulose by oxalic acid hydrolysis. The results from both XRD and Raman spectroscopy indicated that whereas XRD crystallinity of CNCs from BEP and QFP did not change significantly, there was some change in Raman crystallinity of these samples. Raman spectra of SDP CNCs indicated that the acid hydrolysis preferably removed cellulose I portion of the samples and therefore the CNCs became cellulose II enriched. TGA revealed that the CNCs obtained from QFP exhibited higher thermal stability compared to those from BEP and SDP, and all the CNCs possessed better thermal stability than that of CNCs from sulfuric acid hydrolysis. The excellent properties of prepared cellulose nanomaterials will be conducive to their application in different fields.
    Keywords Eucalyptus ; Fourier transform infrared spectroscopy ; Picea ; Raman spectroscopy ; X-ray diffraction ; acid hydrolysis ; cellulose ; cellulose microfibrils ; cotton ; crystal structure ; dissolving pulp ; esterification ; nanocrystals ; oxalic acid ; sulfuric acid ; thermal stability
    Language English
    Dates of publication 2017-06
    Size p. 2483-2498.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 1496831-9
    ISSN 1572-882X ; 0969-0239
    ISSN (online) 1572-882X
    ISSN 0969-0239
    DOI 10.1007/s10570-017-1277-y
    Database NAL-Catalogue (AGRICOLA)

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  9. Article: Dynamics of a Water Nanodrop through a Holey Graphene Matrix: Role of Surface Functionalization, Capillarity, and Applied Forcing

    Wang, Yanbin / Jiaqi Dai / Kunal Ahuja / Liangbing Hu / Parth Rakesh Desai / Shayandev Sinha / Siddhartha Das

    Journal of physical chemistry. 2018 May 22, v. 122, no. 23

    2018  

    Abstract: Nanoporous graphene has emerged as an excellent material for desalination and water purification. Holey graphene (HG) is a special form of nanoporous graphene, where multilayers of nanoporous graphene get arranged in spatially separated stacks. In this ... ...

    Abstract Nanoporous graphene has emerged as an excellent material for desalination and water purification. Holey graphene (HG) is a special form of nanoporous graphene, where multilayers of nanoporous graphene get arranged in spatially separated stacks. In this paper, we employ molecular dynamics simulations to unravel the dynamics of a water drop in presence of an applied force F in such holey graphene architecture, which is characterized by the presence of either hydrophilic functionalization (HIF) or hydrophobic functionalization (HOF) of the edges of the holes. For realistic values of F, the consideration of water drop makes the capillary effects important, which in turn interplays with the wettability of the surface functionalization to ensure that the HG with the HOF causes both an enhanced flux and an enhanced permeated water volume. We relate these phenomena to the augmented water-hydrophilic-edge attraction that arrests the dewetting of water from the graphene stacks and slows the speed of water flowing past the graphene edges. Finally, we discover a time interval when a quasi-steady flux of water comes out of the HG for either types of functionalization and therefore attempts a Darcy’s law-like description of the water flux only to witness a capillarity-induced breakdown of Darcy’s law with the flux being proportional to Fɑ, where αHOF > αHIF > 1.
    Keywords capillarity ; desalination ; graphene ; hydrophilicity ; hydrophobicity ; molecular dynamics ; nanopores ; simulation models ; water purification ; wettability
    Language English
    Dates of publication 2018-0522
    Size p. 12243-12250.
    Publishing place American Chemical Society
    Document type Article
    ISSN 1932-7455
    DOI 10.1021/acs.jpcc.8b01749
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  10. Article: Narrow bandgap semiconductor decorated wood membrane for high-efficiency solar-assisted water purification

    Liu, Hanwen / Chaoji Chen / Huang Wen / Ruixue Guo / Nick A. Williams / Baodui Wang / Fengjuan Chen / Liangbing Hu

    Journal of materials chemistry. 2018 Oct. 9, v. 6, no. 39

    2018  

    Abstract: Solar steam generation is a promising solar energy conversion technology due to its potential applications in water treatment, liquid–liquid phase separation, and sterilization. Therefore, finding highly efficient solar-thermal conversion materials and ... ...

    Abstract Solar steam generation is a promising solar energy conversion technology due to its potential applications in water treatment, liquid–liquid phase separation, and sterilization. Therefore, finding highly efficient solar-thermal conversion materials and structures is highly desirable. Here, we developed a membrane consisting of a narrow bandgap semiconductor of CuFeSe₂ nanoparticles (NPs) decorated wood (coded as black wood membrane), for high-efficiency solar steam generation. The CuFeSe₂ NPs display a desirable narrow bandgap of 0.45 eV, and can be used as a novel light absorbing material for highly efficient solar-thermal conversion. Wood served as the substrate for the CuFeSe₂ NPs due to its excellent properties: a mesoporous structure, low density, heat-localization, low thermal conductivity, high hydrophilicity, and cost-effectiveness. All the properties of the designed CuFeSe₂ NP-decorated wood membrane make it an ideal absorber for solar steam generation, allowing it to achieve a high solar thermal efficiency of 86.2% under 5 kW m⁻². Moreover, the CuFeSe₂ NP-decorated wood membrane is cost-efficient and scalable, making it a fantastic material for various applications involving light absorption, photothermal conversion, and water purification.
    Keywords copper ; cost effectiveness ; energy conversion ; hydrophilicity ; iron ; nanoparticles ; porous media ; selenium ; semiconductors ; separation ; solar energy ; steam ; thermal conductivity ; water purification ; wood
    Language English
    Dates of publication 2018-1009
    Size p. 18839-18846.
    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/c8ta05924a
    Database NAL-Catalogue (AGRICOLA)

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