Zhang, Kai

[["dc.bibliographiccitation.firstpage","2004922"],["dc.bibliographiccitation.issue","44"],["dc.bibliographiccitation.journal","Small"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Liu, Huan"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Tang, Qiyun"],["dc.contributor.author","Müller, Marcus"],["dc.contributor.author","Zhang, Hua"],["dc.contributor.author","Dervişoğlu, Riza"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2021-04-14T08:32:17Z"],["dc.date.available","2021-04-14T08:32:17Z"],["dc.date.issued","2020"],["dc.description.abstract","Abstract For the first time Janus‐like films of surface‐acylated cellulose nanowhiskers (CNWs) with or without graphene oxide (GO) via one‐step evaporation‐driven self‐assembly process are reported, which have reconstructible time‐dependent micro‐/nanostructures and asymmetric wettability. The heterogeneous aggregation of CNWs on rough Teflon substrates favors the formation of uniform films, leading to hydrophobic smooth bottom surface. The homogeneous nucleation of residual CNWs in bulk suspensions promotes the growth of patchy microspheres with an average diameter of 22.7 ± 2.1 µm, which precipitate on the top surface leading to enhanced hydrophobicity. These patchy microspheres are thermoresponsive and vanish after heating at 60 °C within 1 min, while they are reconstructed at room temperature with time‐dependent evolving micro‐/nanostructures in dry state within 2 d. The thermoresponsive transition of patchy microparticles leads to accompanied switchable change between transparency and opacity of Janus‐like films. Furthermore, the incorporation of GO generates more patchy microspheres with an average diameter of 13.5 ± 1.3 µm on the top surface of hybrid Janus‐like films. Different distributions of CNWs and GO in Janus‐like films and the solvent‐responsive self‐assembled patchy microparticles of CNWs facilitate their reversible actuation by showing fast curling in THF within 6 s and flattening in water for at least 25 cycles."],["dc.description.abstract","Janus‐like films of self‐assembled surface‐acylated cellulose nanowhiskers (CNWs) with or without graphene oxide (GO) have asymmetric topographies on their top and bottom surfaces showing different wettabilities, allowing fast solvent‐responsive actuation. Self‐assembled patchy microspheres on the top surface vanish upon heating and recover after cooling down to room temperature with time‐dependent morphologies, while the bottom surface remains smooth. image"],["dc.description.sponsorship","German Research Foundation http://dx.doi.org/10.13039/501100001659"],["dc.description.sponsorship","Georg‐August‐University of Goettingen"],["dc.description.sponsorship","China Scholarship Council http://dx.doi.org/10.13039/501100004543"],["dc.identifier.doi","10.1002/smll.202004922"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/83873"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1613-6829"],["dc.relation.issn","1613-6810"],["dc.rights","This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes."],["dc.title","Self‐Assembly of Surface‐Acylated Cellulose Nanowhiskers and Graphene Oxide for Multiresponsive Janus‐Like Films with Time‐Dependent Dry‐State Structures"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.issue","50"],["dc.bibliographiccitation.journal","Angewandte Chemie"],["dc.bibliographiccitation.volume","130"],["dc.contributor.author","Liu, Huan"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Garces, Renata"],["dc.contributor.author","Dervisoglu, Riza"],["dc.contributor.author","Chen, Longquan"],["dc.contributor.author","Lorenzon, Andrea"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-14T13:30:04Z"],["dc.date.available","2020-05-14T13:30:04Z"],["dc.date.issued","2018"],["dc.description.abstract","Many natural materials have helical or twisting shapes. Herein, we show the formation of helical fibers with the lengths of micrometers by the evaporation‐driven self‐assembly on silicon wafers of functionalized cellulose nanowhiskers (CNWs) with surface‐attached acyl chains. The self‐assembly process and the final helical structures were affected by parameters including the wettability of substrates, dispersing solvents, the amount of 10‐undecenoyl groups, the crystallinity, the dimension of CNWs, and the length of acyl chains. In particular, surface‐acylated CNWs with a certain amount of 10‐undecenoyl groups (ca. 3.52 mmol g−1), an appropriate crystallinity (ca. 40 %), a length of about 135 nm, and a diameter of around 4 nm, preferentially self‐assembled into explicit left‐handed helical fibers from their THF suspensions on wafers. Thus, we showed novel particular self‐assembly behaviors of surface‐acylated CNWs, and we expanded the materials spectrum for the construction of helical structures."],["dc.identifier.doi","10.1002/ange.201808250"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65434"],["dc.language.iso","en"],["dc.title","Helical Fibers via Evaporation-Driven Self-Assembly of Surface-Acylated Cellulose Nanowhiskers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","104"],["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Nano-Micro Letters"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Liu, Wei"],["dc.contributor.author","Liu, Kun"],["dc.contributor.author","Du, Haishun"],["dc.contributor.author","Zheng, Ting"],["dc.contributor.author","Zhang, Ning"],["dc.contributor.author","Xu, Ting"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Zhang, Xinyu"],["dc.contributor.author","Si, Chuanling"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2022-05-02T08:09:47Z"],["dc.date.accessioned","2022-08-16T13:02:26Z"],["dc.date.available","2022-05-02T08:09:47Z"],["dc.date.available","2022-08-16T13:02:26Z"],["dc.date.issued","2022-04-13"],["dc.date.updated","2022-07-29T12:18:54Z"],["dc.description.abstract","Highlights\r\n \r\n \r\n Preparation strategies of cellulose nanopaper were elaborated.\r\n \r\n \r\n Functionalization of cellulose nanopaper and its advanced applications were summarized.\r\n \r\n \r\n Prospects and challenges of cellulose nanopaper were discussed."],["dc.description.abstract","Abstract\r\n Cellulose nanopaper has shown great potential in diverse fields including optoelectronic devices, food packaging, biomedical application, and so forth, owing to their various advantages such as good flexibility, tunable light transmittance, high thermal stability, low thermal expansion coefficient, and superior mechanical properties. Herein, recent progress on the fabrication and applications of cellulose nanopaper is summarized and discussed based on the analyses of the latest studies. We begin with a brief introduction of the three types of nanocellulose: cellulose nanocrystals, cellulose nanofibrils and bacterial cellulose, recapitulating their differences in preparation and properties. Then, the main preparation methods of cellulose nanopaper including filtration method and casting method as well as the newly developed technology are systematically elaborated and compared. Furthermore, the advanced applications of cellulose nanopaper including energy storage, electronic devices, water treatment, and high-performance packaging materials were highlighted. Finally, the prospects and ongoing challenges of cellulose nanopaper were summarized."],["dc.identifier.citation","Nano-Micro Letters. 2022 Apr 13;14(1):104"],["dc.identifier.doi","10.1007/s40820-022-00849-x"],["dc.identifier.pii","849"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/107462"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/112756"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-561"],["dc.relation.eissn","2150-5551"],["dc.relation.issn","2311-6706"],["dc.relation.orgunit","Abteilung Holztechnologie und Holzwerkstoffe"],["dc.relation.orgunit","Fakultät für Forstwissenschaften und Waldökologie"],["dc.rights","CC BY 4.0"],["dc.rights.holder","The Author(s)"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject","Nanocellulose"],["dc.subject","Cellulose nanopaper"],["dc.subject","Cellulose nanocrystals"],["dc.subject","Cellulose nanofibrils"],["dc.subject","Cellulose nanomaterials"],["dc.title","Cellulose Nanopaper: Fabrication, Functionalization, and Applications"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","092111"],["dc.bibliographiccitation.issue","9"],["dc.bibliographiccitation.journal","Physics of Fluids"],["dc.bibliographiccitation.volume","33"],["dc.contributor.author","Sun, Lijie"],["dc.contributor.author","Lin, Shiji"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Wang, Yile"],["dc.contributor.author","Li, Erqiang"],["dc.contributor.author","Zu, Xiaotao"],["dc.contributor.author","Zhang, Kai"],["dc.contributor.author","Xiang, Xia"],["dc.contributor.author","Chen, Longquan"],["dc.date.accessioned","2021-12-01T09:21:01Z"],["dc.date.available","2021-12-01T09:21:01Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1063/5.0058512"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/94323"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-478"],["dc.relation.eissn","1089-7666"],["dc.relation.issn","1070-6631"],["dc.title","Water sprays formed by impinging millimeter-sized droplets on superhydrophobic meshes"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2070241"],["dc.bibliographiccitation.issue","44"],["dc.bibliographiccitation.journal","Small"],["dc.bibliographiccitation.volume","16"],["dc.contributor.author","Liu, Huan"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Tang, Qiyun"],["dc.contributor.author","Müller, Marcus"],["dc.contributor.author","Zhang, Hua"],["dc.contributor.author","Dervişoğlu, Riza"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2021-12-08T12:27:17Z"],["dc.date.available","2021-12-08T12:27:17Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1002/smll.202070241"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/95307"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-476"],["dc.relation.eissn","1613-6829"],["dc.relation.issn","1613-6810"],["dc.title","Multiresponsive Janus‐Like Films: Self‐Assembly of Surface‐Acylated Cellulose Nanowhiskers and Graphene Oxide for Multiresponsive Janus‐Like Films with Time‐Dependent Dry‐State Structures (Small 44/2020)"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","S0001868621001639"],["dc.bibliographiccitation.firstpage","102522"],["dc.bibliographiccitation.journal","Advances in colloid and interface science"],["dc.bibliographiccitation.volume","296"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Liu, Huan"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2021-10-01T09:57:54Z"],["dc.date.available","2021-10-01T09:57:54Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1016/j.cis.2021.102522"],["dc.identifier.pii","S0001868621001639"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/89940"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-469"],["dc.relation.issn","0001-8686"],["dc.title","Recent progress on Pickering emulsions stabilized by polysaccharides-based micro/nanoparticles"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","16323"],["dc.bibliographiccitation.issue","50"],["dc.bibliographiccitation.journal","Angewandte Chemie. International Edition"],["dc.bibliographiccitation.lastpage","16328"],["dc.bibliographiccitation.volume","57"],["dc.contributor.author","Liu, Huan"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Garces, Renata"],["dc.contributor.author","Dervisoglu, Riza"],["dc.contributor.author","Chen, Longquan"],["dc.contributor.author","Lorenzon, Andrea"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-14T13:30:48Z"],["dc.date.available","2020-05-14T13:30:48Z"],["dc.date.issued","2018"],["dc.description.abstract","Many natural materials have helical or twisting shapes. Herein, we show the formation of helical fibers with the lengths of micrometers by the evaporation-driven self-assembly on silicon wafers of functionalized cellulose nanowhiskers (CNWs) with surface-attached acyl chains. The self-assembly process and the final helical structures were affected by parameters including the wettability of substrates, dispersing solvents, the amount of 10-undecenoyl groups, the crystallinity, the dimension of CNWs, and the length of acyl chains. In particular, surface-acylated CNWs with a certain amount of 10-undecenoyl groups (ca. 3.52 mmol g-1 ), an appropriate crystallinity (ca. 40 %), a length of about 135 nm, and a diameter of around 4 nm, preferentially self-assembled into explicit left-handed helical fibers from their THF suspensions on wafers. Thus, we showed novel particular self-assembly behaviors of surface-acylated CNWs, and we expanded the materials spectrum for the construction of helical structures."],["dc.identifier.doi","10.1002/anie.201808250"],["dc.identifier.pmid","30264507"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65439"],["dc.language.iso","en"],["dc.relation.eissn","1521-3773"],["dc.title","Helical Fibers via Evaporation-Driven Self-Assembly of Surface-Acylated Cellulose Nanowhiskers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","2005569"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","Advanced Materials"],["dc.bibliographiccitation.volume","33"],["dc.contributor.author","Chen, Yiming"],["dc.contributor.author","Zhang, Lin"],["dc.contributor.author","Yang, Yang"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Xu, Wenhui"],["dc.contributor.author","Duan, Gaigai"],["dc.contributor.author","Jiang, Shaohua"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2021-04-14T08:29:32Z"],["dc.date.available","2021-04-14T08:29:32Z"],["dc.date.issued","2021"],["dc.identifier.doi","10.1002/adma.202005569"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/82927"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-399"],["dc.relation.eissn","1521-4095"],["dc.relation.issn","0935-9648"],["dc.title","Recent Progress on Nanocellulose Aerogels: Preparation, Modification, Composite Fabrication, Applications"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3218"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Angewandte Chemie. International Edition"],["dc.bibliographiccitation.lastpage","3225"],["dc.bibliographiccitation.volume","59"],["dc.contributor.author","Liu, Peiwen"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Zhang, Xizhou Cecily"],["dc.contributor.author","Andreas, Loren B"],["dc.contributor.author","Fischer, Steffen"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-05-18T08:15:07Z"],["dc.date.available","2020-05-18T08:15:07Z"],["dc.date.issued","2020"],["dc.description.abstract","Reported here for the first time is the alkaline periodate oxidation of lignocelluloses for the selective isolation of cellulose nanocrystals (CNCs). With the high concentrations as a potassium salt at pH 10, periodate ions predominantly exist as dimeric orthoperiodate ions (H2 I2 O104- ). With reduced oxidizing activity in alkaline solutions, dimeric orthoperiodate ions preferentially oxidized non-ordered cellulose regions. The alkaline surroundings promoted the degradation of these oxidized cellulose chains by β-alkoxy fragmentation and generated CNCs. The obtained CNCs were uniform in size and generally contained carboxy groups. Furthermore, the reaction solution could be reused after regeneration of the periodate with ozone gas. This method allows direct production of CNCs from diverse sources, in particular lignocellulosic raw materials including sawdust (European beech and Scots pine), flax, and kenaf, in addition to microcrystalline cellulose and pulp."],["dc.identifier.doi","10.1002/anie.201912053"],["dc.identifier.pmid","31692150"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/65463"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.eissn","1521-3773"],["dc.rights","CC BY-NC 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by-nc/4.0"],["dc.title","Structure Selectivity of Alkaline Periodate Oxidation on Lignocellulose for Facile Isolation of Cellulose Nanocrystals"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","3244"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","Angewandte Chemie"],["dc.bibliographiccitation.lastpage","3251"],["dc.bibliographiccitation.volume","132"],["dc.contributor.author","Liu, Peiwen"],["dc.contributor.author","Pang, Bo"],["dc.contributor.author","Dechert, Sebastian"],["dc.contributor.author","Zhang, Xizhou Cecily"],["dc.contributor.author","Andreas, Loren B."],["dc.contributor.author","Fischer, Steffen"],["dc.contributor.author","Meyer, Franc"],["dc.contributor.author","Zhang, Kai"],["dc.date.accessioned","2020-04-27T08:52:05Z"],["dc.date.accessioned","2020-05-18T08:18:39Z"],["dc.date.available","2020-04-27T08:52:05Z"],["dc.date.available","2020-05-18T08:18:39Z"],["dc.date.issued","2019"],["dc.description.abstract","Reported here for the first time is the alkaline periodate oxidation of lignocelluloses for the selective isolation of cellulose nanocrystals (CNCs). With the high concentrations as a potassium salt at pH 10, periodate ions predominantly exist as dimeric orthoperiodate ions (H2I2O104−). With reduced oxidizing activity in alkaline solutions, dimeric orthoperiodate ions preferentially oxidized non‐ordered cellulose regions. The alkaline surroundings promoted the degradation of these oxidized cellulose chains by β‐alkoxy fragmentation and generated CNCs. The obtained CNCs were uniform in size and generally contained carboxy groups. Furthermore, the reaction solution could be reused after regeneration of the periodate with ozone gas. This method allows direct production of CNCs from diverse sources, in particular lignocellulosic raw materials including sawdust (European beech and Scots pine), flax, and kenaf, in addition to microcrystalline cellulose and pulp."],["dc.identifier.doi","10.1002/ange.201912053"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/64356"],["dc.language.iso","en"],["dc.relation.eissn","1521-3757"],["dc.relation.issn","0044-8249"],["dc.title","Structure Selectivity of Alkaline Periodate Oxidation on Lignocellulose for Facile Isolation of Cellulose Nanocrystals"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dspace.entity.type","Publication"]]