51
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Wang S, Zhang X, Wu X, Lu C. Tailoring percolating conductive networks of natural rubber composites for flexible strain sensors via a cellulose nanocrystal templated assembly. SOFT MATTER 2016; 12:845-52. [PMID: 26542376 DOI: 10.1039/c5sm01958c] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Abstract
Conductive polymer composites (CPCs) just above the percolation threshold exhibit a unique strain-reversible electric response upon application of tensile strain, which can be used to prepare strain sensors. However, it is difficult to balance the electric conductivity which is fundamental to a stable output signal and the strain sensing sensitivity due to the relatively dense conductive pathways of the traditional CPCs. Constructing a "brittle" but effective conductive network structure in CPCs is the essential foundation of a desirable sensing material. Here, we demonstrate for the first time that highly flexible, stretchable, sensitive, and reversible strain sensors can be fabricated by a facile latex assembly approach, in which nontoxic, sustainable and biodegradable cellulose nanocrystals played a key role in tailoring the percolating network of conductive natural rubber (NR)/carbon nanotube (CNT) composites. The resulting nanocomposites with a continuous 3D conductive structure exhibited a very low electrical conductivity percolation threshold (4-fold lower than that of the conventional NR/CNT composites), high resistivity and sensitivity (gauge factor ≈ 43.5) and meanwhile good reproducibility of up to 100% strain. The proposed materials and principles in this study open up a novel practical approach to design high performance flexible sensors for a broad range of multifunctional applications.
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Affiliation(s)
- Shuman Wang
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
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52
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Alla SK, Verma AD, Kumar V, Mandal RK, Sinha I, Prasad NK. Solvothermal synthesis of CuO–MgO nanocomposite particles and their catalytic applications. RSC Adv 2016. [DOI: 10.1039/c6ra03762c] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
CuO–MgO nanocomposites were prepared by a solvothermal procedure.
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Affiliation(s)
- S. K. Alla
- Department of Metallurgical Engineering
- Indian Institute of Technology (BHU)
- Varanasi 221005
- India
| | - A. D. Verma
- Department of Chemistry
- Indian Institute of Technology (BHU)
- Varanasi 221005
- India
| | - Vinod Kumar
- Department of Electronics Science
- Kurukshetra University
- Kurukshetra 136119
- India
| | - R. K. Mandal
- Department of Metallurgical Engineering
- Indian Institute of Technology (BHU)
- Varanasi 221005
- India
| | - I. Sinha
- Department of Chemistry
- Indian Institute of Technology (BHU)
- Varanasi 221005
- India
| | - N. K. Prasad
- Department of Metallurgical Engineering
- Indian Institute of Technology (BHU)
- Varanasi 221005
- India
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53
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Bhattacharjee A, Ahmaruzzaman M. CuO nanostructures: facile synthesis and applications for enhanced photodegradation of organic compounds and reduction of p-nitrophenol from aqueous phase. RSC Adv 2016. [DOI: 10.1039/c6ra03624d] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
1D CuO nanorods and 2D CuO nanosheets were synthesized for the first time using amino acids, namely l-lysine and l-glycine, by a microwave assisted green synthetic route.
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Affiliation(s)
| | - M. Ahmaruzzaman
- Department of Chemistry
- National Institute of Technology
- Silchar-788010
- India
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54
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Khan SB, Khan SA, Marwani H, Bakhsh EM, Anwar Y, Kamal T, Asiri AM, Akhtar K. Anti-bacterial PES-cellulose composite spheres: dual character toward extraction and catalytic reduction of nitrophenol. RSC Adv 2016. [DOI: 10.1039/c6ra21626a] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Polyethersulfone (PES) based hybrid adsorbents were used for the removal of different phenols from aqueous solutions, which are categorized as major aquatic organic pollutants.
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Affiliation(s)
- Sher Bahadar Khan
- Center of Excellence for Advanced Materials Research (CEAMR)
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Department of Chemistry
| | - Shahid Ali Khan
- Center of Excellence for Advanced Materials Research (CEAMR)
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Department of Chemistry
| | - Hadi M. Marwani
- Center of Excellence for Advanced Materials Research (CEAMR)
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Department of Chemistry
| | - Esraa M. Bakhsh
- Department of Chemistry
- King Abdulaziz University
- Jeddah
- Saudi Arabia
| | - Yasir Anwar
- Department of Biology
- Faculty of Science
- King Abdulaziz University
- Jeddah
- Saudi Arabia
| | - Tahseen Kamal
- Center of Excellence for Advanced Materials Research (CEAMR)
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Department of Chemistry
| | - Abdullah M. Asiri
- Center of Excellence for Advanced Materials Research (CEAMR)
- King Abdulaziz University
- Jeddah
- Saudi Arabia
- Department of Chemistry
| | - Kalsoom Akhtar
- Division of Nano Sciences and Department of Chemistry
- Ewha Womans University
- Seoul
- Korea
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55
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Yasukawa T, Miyamura H, Kobayashi S. Cellulose-supported chiral rhodium nanoparticles as sustainable heterogeneous catalysts for asymmetric carbon-carbon bond-forming reactions. Chem Sci 2015; 6:6224-6229. [PMID: 30090239 PMCID: PMC6054049 DOI: 10.1039/c5sc02510a] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2015] [Accepted: 08/11/2015] [Indexed: 11/24/2022] Open
Abstract
Cellulose-supported chiral Rh nanoparticle (NP) catalysts have been developed. The Rh NPs, which were well dispersed on cellulose, catalyzed the asymmetric 1,4-addition of arylboronic acids to enones and enoates, one of the representative asymmetric carbon-carbon bond-forming reactions, in the presence of chiral diene ligands, providing the corresponding adducts in high yields with outstanding enantioselectivities without metal leaching. The solid-state NMR analysis of the chiral NP system directly suggested interactions between the Rh NPs and the chiral ligand on cellulose. This is the first example of using polysaccharide-supported chiral metal nanoparticles for asymmetric carbon-carbon bond-forming reactions.
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Affiliation(s)
- Tomohiro Yasukawa
- Department of Chemistry , School of Science , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Hiroyuki Miyamura
- Department of Chemistry , School of Science , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
| | - Shū Kobayashi
- Department of Chemistry , School of Science , The University of Tokyo , Hongo, Bunkyo-ku , Tokyo 113-0033 , Japan .
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56
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Baruah D, Konwar D. Cellulose supported copper nanoparticles as a versatile and efficient catalyst for the protodecarboxylation and oxidative decarboxylation of aromatic acids under microwave heating. CATAL COMMUN 2015. [DOI: 10.1016/j.catcom.2015.05.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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57
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Liu J, Plog A, Groszewicz P, Zhao L, Xu Y, Breitzke H, Stark A, Hoffmann R, Gutmann T, Zhang K, Buntkowsky G. Design of a Heterogeneous Catalyst Based on Cellulose Nanocrystals for Cyclopropanation: Synthesis and Solid-State NMR Characterization. Chemistry 2015; 21:12414-20. [DOI: 10.1002/chem.201501151] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Indexed: 11/10/2022]
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58
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Tang J, Shi Z, Berry RM, Tam KC. Mussel-Inspired Green Metallization of Silver Nanoparticles on Cellulose Nanocrystals and Their Enhanced Catalytic Reduction of 4-Nitrophenol in the Presence of β-Cyclodextrin. Ind Eng Chem Res 2015. [DOI: 10.1021/acs.iecr.5b00177] [Citation(s) in RCA: 149] [Impact Index Per Article: 16.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Juntao Tang
- Department
of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L
3G1, Canada
| | - Zengqian Shi
- Department
of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L
3G1, Canada
| | - Richard M. Berry
- CelluForce, Inc., 625 President-Kennedy Ave., Montreal, Quebec H3A 1K2, Canada
| | - Kam C. Tam
- Department
of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L
3G1, Canada
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59
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Chauhan I, Aggrawal S, Chandravati C, Mohanty P. Metal oxide nanostructures incorporated/immobilized paper matrices and their applications: a review. RSC Adv 2015. [DOI: 10.1039/c5ra13601f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A comprehensive review on the metal oxide nanostructures incorporated/immobilized paper matrices byex situandin situmethods for various applications.
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Affiliation(s)
- Indu Chauhan
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Sudiksha Aggrawal
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Chandravati Chandravati
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
| | - Paritosh Mohanty
- Department of Applied Science and Engineering
- IIT Roorkee
- Saharanpur Campus
- Saharanpur-247001
- India
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60
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Song W, Wu H, Wang J, Lin Y, Song J, Xie Y, Li L, Shi K. Facile Synthesis of Hierarchical CuO Microspheres and their Gas Sensing Properties for NOx at Room Temperature. Aust J Chem 2015. [DOI: 10.1071/ch15126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
In this research, hierarchical CuO microspheres have been successfully synthesised by a facile reflux method. Scanning electron microscopy results clearly revealed that the hierarchical CuO microspheres were composed of two-dimensional nanosheets. The morphology of the prepared products could be tailored by changing the precursor concentration. The CuO-2 sample shows a higher NOx gas sensing performance with a low detection limit of 0.97 ppm, high gas response of 64.93 %, and short response time of 5.33 s to 97.0 ppm NOx at room temperature. The CuO-2 sensor also presents good selectivity and stability. The significantly improved gas response was concluded to be related to the well aligned microstructures and the improved conductivity of the CuO-2 sample. The unique hierarchical structure allows effective and rapid gas diffusion towards the sensing surfaces. In addition, the sensing mechanism based on the hierarchical CuO microspheres is discussed.
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61
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Zong S, Wei W, Jiang Z, Yan Z, Zhu J, Xie J. Characterization and comparison of uniform hydrophilic/hydrophobic transparent silica aerogel beads: skeleton strength and surface modification. RSC Adv 2015. [DOI: 10.1039/c5ra08714g] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
This preparation method of skeleton improvement of wet silica beads by ambient pressure drying is suitable for economic and large-scale industrial production of silica aerogel beads.
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Affiliation(s)
- Sekai Zong
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Wei Wei
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
- Center of Analysis and Test
| | - Zhifeng Jiang
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Zaoxue Yan
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Jianjun Zhu
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
| | - Jimin Xie
- School of Chemistry and Chemical Engineering
- Jiangsu University
- Zhenjiang
- P. R. China
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62
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Wu X, Lu C, Xu H, Zhang X, Zhou Z. Biotemplate synthesis of polyaniline@cellulose nanowhiskers/natural rubber nanocomposites with 3D hierarchical multiscale structure and improved electrical conductivity. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21078-21085. [PMID: 25384188 DOI: 10.1021/am505924z] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Development of novel and versatile strategies to construct conductive polymer composites with low percolation thresholds and high mechanical properties is of great importance. In this work, we report a facile and effective strategy to prepare polyaniline@cellulose nanowhiskers (PANI@CNs)/natural rubber (NR) nanocomposites with 3D hierarchical multiscale structure. Specifically, PANI was synthesized in situ on the surface of CNs biotemplate to form PANI@CNs nanohybrids with high aspect ratio and good dispersity. Then NR latex was introduced into PANI@CNs nanohybrids suspension to enable the self-assembly of PANI@CNs nanohybrids onto NR latex microspheres. During cocoagulation process, PANI@CNs nanohybrids selectively located in the interstitial space between NR microspheres and organized into a 3D hierarchical multiscale conductive network structure in NR matrix. The combination of the biotemplate synthesis of PANI and latex cocoagulation method significantly enhanced the electrical conductivity and mechanical properties of the NR-based nanocomposites simultaneously. The electrical conductivity of PANI@CNs/NR nanocomposites containing 5 phr PANI showed 11 orders of magnitude higher than that of the PANI/NR composites at the same loading fraction,; meanwhile, the percolation threshold was drastically decreased from 8.0 to 3.6 vol %.
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Affiliation(s)
- Xiaodong Wu
- State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University , Chengdu 610065, China
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63
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Yang C, Zang L, Qiu J, Sakai E, Wu X, Iwase Y. Nano-cladding of natural microcrystalline cellulose with conducting polymer: preparation, characterization, and application in energy storage. RSC Adv 2014. [DOI: 10.1039/c4ra07389d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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64
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Zhou Z, Zhang X, Lu C, Lan L, Yuan G. Polyaniline-decorated cellulose aerogel nanocomposite with strong interfacial adhesion and enhanced photocatalytic activity. RSC Adv 2014. [DOI: 10.1039/c3ra46441e] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
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