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Li W, Li C, Yang H, Yang H, Qu J, Han Y, Li X, Yu ZZ. Well-designed lamellar reduced graphene oxide-based foam for high-performance solar-driven water purification. J Colloid Interface Sci 2024; 660:716-725. [PMID: 38271807 DOI: 10.1016/j.jcis.2024.01.093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/20/2023] [Accepted: 01/13/2024] [Indexed: 01/27/2024]
Abstract
Although solar steam generation is promising for seawater desalination, it is less effective in purifying wastewater with both salt/heavy metal ions and organic contaminants. It is thus imperative to develop multifunctional integrated solar-driven water purification systems with high solar-thermal evaporation and photocatalytic degradation efficiencies. Herein, a lamellar reduced graphene oxide (L-RGO) foam with the vertical lamellar structure is fabricated by bidirectional-freezing, lyophilization, and slight chemical reduction for water purification. The unique vertical lamellar structure not only accelerates upward transport of water for facilitating water evaporation but also endows the L-RGO foam with superb high elasticity for tuning the interlayer distance and varying interactions between the oxygen-containing groups and water molecules to adjust water energy state. As a result, the L-RGO foam achieves a superb water evaporation rate of 2.40 kg m-2 h-1 along with an energy efficiency of 95.3 % under the compressive strain of 44.7 % under 1-sun irradiation. Equally importantly, the decoration of L-RGO foam with polypyrrole is capable of efficiently degrading organic pollutants while retaining high solar steam generation performances, exhibiting great potential in the comprehensive treatment of various water sources for relieving freshwater crisis.
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Affiliation(s)
- Wei Li
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China; State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Changjun Li
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China
| | - Haimin Yang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Haining Yang
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Jin Qu
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China
| | - Yongqin Han
- College of Materials Science and Engineering, Shandong University of Science and Technology, Qingdao 266590, China.
| | - Xiaofeng Li
- State Key Laboratory of Organic-Inorganic Composites, College of Materials Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Zhong-Zhen Yu
- Beijing Key Laboratory of Advanced Functional Polymer Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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Wang J, Cao X, Cui X, Wang H, Zhang H, Wang K, Li X, Li Z, Zhou Y. Recent Advances of Green Electricity Generation: Potential in Solar Interfacial Evaporation System. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311151. [PMID: 38182407 DOI: 10.1002/adma.202311151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Revised: 12/25/2023] [Indexed: 01/07/2024]
Abstract
Solar-driven interfacial evaporation (SDIE) has played a pivotal role in optimizing water-energy utilization, reducing conventional power costs, and mitigating environmental impacts. The increasing emphasis on the synergistic cogeneration of water and green electricity through SDIE is particularly noteworthy. However, there is a gap of existing reviews that have focused on the mechanistic understanding of green power from water-electricity cogeneration (WEC) systems, the structure-activity relationship between efficiency of green energy utilization in WEC and material design in SDIE. Particularly, it lacks a comprehensive discussion to address the challenges faced in these areas along with potential solutions. Therefore, this review aims to comprehensively assess the progress and future perspective of green electricity from WEC systems by investigating the potential expansion of SDIE. First, it provides a comprehensive overview about material rational design, thermal management, and water transportation tunnels in SDIE. Then, it summarizes diverse energy sources utilized in the SDIE process, including steaming generation, photovoltaics, salinity gradient effect, temperature gradient effect, and piezoelectric effect. Subsequently, it explores factors that affect generated green electricity efficiency in WEC. Finally, this review proposes challenges and possible solution in the development of WEC.
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Affiliation(s)
- Jinhu Wang
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Xiqian Cao
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Xinyue Cui
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Haijian Wang
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Haoran Zhang
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
| | - Kaiwen Wang
- ICFO - Institut de Ciències Fotòniques, The Barcelona Institute of Science and Technology, Castelldefels, Barcelona, 08860, Spain
| | - Xibao Li
- School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang, Jiangxi, 330063, P. R. China
| | - Zhengtong Li
- State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Yangtze Institute for Conservation and Development, Hohai University, Nanjing, 210098, China
| | - Yingtang Zhou
- National Engineering Research Center for Marine Aquaculture, Marine Science and Technology College, Zhejiang Ocean University, Zhoushan, 316004, China
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Li A, Liu W, Yu A, Hao Y, Chen W, Zheng M, Zhang C, Liu H, Yu J, Wang L, Qin X. Rational Design of a Hydrophilic Core-Hydrophobic Shell Yarn-Based Solar Evaporator with an Underwater Aerophilic Surface for Self-Floating and High-Performance Dynamic Water Purification. NANO LETTERS 2024; 24:1034-1043. [PMID: 38190456 DOI: 10.1021/acs.nanolett.3c04748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Interfacial solar vapor generation holds great promise for alleviating the global freshwater crisis, but its real-world application is limited by the efficiently choppy water evaporation and industrial production capability. Herein, a self-floating solar evaporator with an underwater aerophilic surface is innovatively fabricated by weaving core-shell yarns via mature weaving techniques. The core-shell yarns possess capillary water channels in the hydrophilic cotton core and can trap air in the hydrophobic electrospinning nanofiber shell when submerged underwater, simultaneously realizing controllable water supplies, stable self-flotation, and great thermal insulation. Consequently, the self-floating solar evaporator achieves an evaporation rate of 2.26 kg m-2 h-1 under 1 sun irradiation, with a reduced heat conduction of 70.18 W m-2. Additionally, for the first time, a solar evaporator can operate continuously in water with varying waveforms and intensities over 24 h, exhibiting an outdoor cumulative evaporation rate of 14.17 kg m-2 day-1.
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Affiliation(s)
- Ailin Li
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Wendi Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Aixin Yu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Yunna Hao
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Wenjing Chen
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Maorong Zheng
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Chentian Zhang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Huijie Liu
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Jianyong Yu
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai 201620, China
| | - Liming Wang
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
| | - Xiaohong Qin
- Key Laboratory of Textile Science & Technology, Ministry of Education, College of Textiles, Donghua University, Shanghai 201620, China
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Ma H, Yu L, Li Z, Chen J, Meng J, Song Q, Liu Y, Wang Y, Wu Q, Miao M, Zhi C. A Lotus Seedpods-Inspired Interfacial Solar Steam Generator with Outstanding Salt Tolerance and Mechanical Properties for Efficient and Stable Seawater Desalination. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304877. [PMID: 37635127 DOI: 10.1002/smll.202304877] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2023] [Revised: 07/28/2023] [Indexed: 08/29/2023]
Abstract
Interfacial solar steam generators (ISSGs) can capture solar energy and concentrate the heat at the gas-liquid interface, resulting in efficient water evaporation. However, traditional ISSGs have limitations in long-term seawater desalination processes, such as limited light absorption area, slow water transport speed, severe surface salt accumulation, and weak mechanical performance. Inspired by lotus seedpods, a novel ISSG (rGO-SA-PSF) is developed by treating a 3D warp-knitted spacer fabric with plasma (PSF) and combining it with sodium alginate (SA) and reduces graphene oxide (rGO). The rGO-SA-PSF utilizes a core-suction effect to achieve rapid water pumping and employs aerogel to encapsulate the plasma-treated spacer yarns to create the lotus seedpod-inspired hydrophilic stems, innovatively constructing multiple directional water transport channels. Simultaneously, the large holes of rGO-SA-PSF on the upper layer form lotus seedpod-inspired head concave holes, enabling efficient light capture. Under 1 kW m-2 illumination, rGO-SA-PSF exhibits a rapid evaporation rate of 1.85 kg m-2 h-1 , with an efficiency of 96.4%. Additionally, it shows superior salt tolerance (with no salt accumulation during continuous evaporation for 10 h in 10% brine) and self-desalination performance during long-term seawater desalination processes. This biomimetic ISSG offers a promising solution for efficient and stable seawater desalination and wastewater purification.
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Affiliation(s)
- Haodong Ma
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Lingjie Yu
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Zhenzhen Li
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Jianglong Chen
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Jiaguang Meng
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Qingwen Song
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Yaming Liu
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Yongzhen Wang
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Qian Wu
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
| | - Menghe Miao
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
- Department of Mechanical Engineering, The University of Melbourne, Grattan Street, Parkville, Victoria, 3010, Australia
| | - Chao Zhi
- Key Laboratory of Functional Textile Material and Product, Ministry of Education, School of Textile Science and Engineering, Xi'an Polytechnic University, Xi'an, Shaanxi, 710048, China
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Li S, Xi Z, Yu L, Yan H, Chen M. Thermal Management of the Solar Evaporation Process. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023. [PMID: 37294930 DOI: 10.1021/acs.langmuir.3c01041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Solar-driven interfacial evaporation has caught wide attention for water purification due to its green and environment-friendly properties. The key issue is how to effectively utilize solar radiation for evaporation. To fully understand the thermal management of the solar evaporation process, a multiphysics model has been built by the finite element method to clarify the heat transfer process for the improvement of solar evaporation. Simulation results indicate that the evaporation performance can be improved by tuning the thermal loss, local heating, convective mass transfer, and evaporation area. The thermal radiation loss of the evaporation interface and thermal convection loss to the bottom water should be avoided, and local heating is good for evaporation. Convection above the interface can improve evaporation performance, although it would enhance the thermal convective loss. In addition, evaporation also can be improved by increasing the evaporation area from 2D to 3D structures. Experimental results confirm that the solar evaporation ratio can be improved from 0.795 kg m-2 h-1 to 1.122 kg m-2 h-1 at 1 sun with a 3D interface and thermal insulation between the interface and bottom water. These results can provide a design principle for the solar evaporation system based on thermal management.
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Affiliation(s)
- Shuang Li
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Zhiyuan Xi
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Li Yu
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Hongjie Yan
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
| | - Meijie Chen
- School of Energy Science and Engineering, Central South University, Changsha 410083, China
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Ye X, Yu Y, Yang C, Fan Q, Shang L, Ye F. Microfluidic electrospray generation of porous magnetic Janus reduced graphene oxide/carbon composite microspheres for versatile adsorption. J Colloid Interface Sci 2022; 624:546-554. [PMID: 35679642 DOI: 10.1016/j.jcis.2022.05.156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/22/2022] [Accepted: 05/28/2022] [Indexed: 10/18/2022]
Abstract
HYPOTHESIS Graphene-based microparticles materials are broadly utilized in all sorts of fields owing to their outstanding properties. Despite great progress, the present graphene microparticles still face challenges in the aspects of size uniformity, motion flexibility, and tailorable surface chemistry, which limit their application in some specific fields, such as versatile adsorption. Hence, the development of novel graphene microparticles with the aforementioned characteristics is urgently required. EXPERIMENTS We presented a simple microfluidic electrospray strategy to generate magnetic Janus reduced graphene oxide/carbon (rGO/C) composite microspheres with a variety of unique features. Specifically, the microfluidic electrospray method endowed the obtaiend microspheres with sufficient size uniformity as well as magnetic responsive motion ability. Additionally, magnetic-mediated surface assembly of phase transition lysozyme (PTL) nanofilm on the microspheres rendered the deposited area hydrophilic while non-deposited area hydrophobic. FINDINGS Such magnetic Janus rGO/C composite microspheres with regionalized wettability characteristics not only showed prominent performance in adsorbing organic liquids with high adsorption capacity and remarkable reusability but also displayed satisfying biocompatibility for the efficient uptake of bilirubin. More encouragingly, the microspheres could serve as adsorbents in a simulative hemoperfusion setup, which further demonstrated the clinical application potential of the magnetic Janus rGO/C microspheres. Thus, we anticipate that the obtained magnetic Janus rGO/C composite microspheres could show multifunctional properties toward water treatment and blood molecule cleaning.
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Affiliation(s)
- Xiaomin Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yunru Yu
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China
| | - Chaoyu Yang
- Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China
| | - Qihui Fan
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
| | - Luoran Shang
- Shanghai Xuhui Central Hospital, Zhongshan-Xuhui Hospital, and the Shanghai Key Laboratory of Medical Epigenetics, the International Co-laboratory of Medical Epigenetics and Metabolism (Ministry of Science and Technology), Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China.
| | - Fangfu Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China; School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China; Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou, Zhejiang 325001, China; Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou, Zhejiang 325001, China.
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Chu A, Yang M, Yang H, Shi X, Chen J, Fang J, Wang Z, Li H. Sustainable Self-Cleaning Evaporators for Highly Efficient Solar Desalination Using a Highly Elastic Sponge-like Hydrogel. ACS APPLIED MATERIALS & INTERFACES 2022; 14:36116-36131. [PMID: 35913129 DOI: 10.1021/acsami.2c08561] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Interfacial evaporation using light-absorbing hydrogels offers efficient solar evaporation performance under natural sunlight, ensuring an affordable clean water supply. However, achieving light-absorbing hydrogels with durable and efficient utilization is still a challenge due to inevitable salt accumulation, a difficult-to-control surface morphology, and poor mechanical properties on the surfaces of hydrogel-based evaporators. In this work, a photothermal sponge-like hydrogel with a 3D interconnected porous structure was constructed using low-cost activated carbon as a photothermal material, as well as a double-network polymer chain as the basic skeleton using a simple foaming polymerization strategy. The sponge-like hydrogel evaporator showed tailored surface topography, adequate water transport, excellent elasticity and toughness, good salt rejection, and thermal localization properties. Under the irradiation of simulated sunlight (1.0 kW/m2), a high evaporation rate of 2.33 kg·m-2·h-1 was achieved. Furthermore, efficient salt self-cleaning behavior was achieved due to the fast ion diffusion within the 3D interconnected porous structures. Even in highly concentrated brine of 15 wt %, continuous and efficient water evaporation was still achieved. The excellent evaporation and salt rejection properties of this photothermal sponge-like hydrogel indicated its promising long-term sustainable utilization in seawater desalination.
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Affiliation(s)
- Aqiang Chu
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Meng Yang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Hongda Yang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Xueqi Shi
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Juanli Chen
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Jing Fang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Zhiying Wang
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
| | - Hao Li
- National-Local Joint Engineering Laboratory for Energy Conservation in Chemical Process Integration and Resources Utilization, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin 300401, China
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Niu Y, Wang S, Zhu Z, Su M, Wang Y, Yan L, Ma Y, Sun H, Liang W, Li A. Hollow glass microspheres modified polyurethane sponge with enhanced flame retardancy. J Appl Polym Sci 2022. [DOI: 10.1002/app.52723] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ye Niu
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Shuo Wang
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
- Department of Chemistry and Chemical Engineering Ankang University Ankang P. R. China
| | - Zhaoqi Zhu
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Min Su
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Yunjia Wang
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Lijuan Yan
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Yingjiao Ma
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Hanxue Sun
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - Weidong Liang
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
| | - An Li
- College of Petrochemical Technology Lanzhou University of Technology Lanzhou P. R. China
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Niu Y, Wang S, Zhu Z, Su M, Wang Y, Yan L, Ma Y, Sun H, Liang W, Li A. Robust composite aerogels with excellent flame retardant and thermal insulation properties based on modified hollow glass microspheres. Polym Degrad Stab 2022. [DOI: 10.1016/j.polymdegradstab.2022.110030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Zhu Z, Niu Y, Wang S, Su M, Long Y, Sun H, Liang W, Li A. Magnesium hydroxide coated hollow glass microspheres/chitosan composite aerogels with excellent thermal insulation and flame retardancy. J Colloid Interface Sci 2022; 612:35-42. [PMID: 34974256 DOI: 10.1016/j.jcis.2021.12.138] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 12/20/2021] [Accepted: 12/21/2021] [Indexed: 01/03/2023]
Abstract
The development of an environmental-friendly thermal insulation and flame retardant material has attracted widespread attention in modern architecture. In this work, a kind of novel aerogel composites were prepared by incorporation of Mg(OH)2 coated hollow glass microspheres (HGM) into chitosan (CSA) matrix and then cross-linking by glutaraldehyde (abbreviated as CSA-HGM-Mg(OH)2). The as-prepared composite aerogel exhibits vertical directional channel with high porosity and excellent thermal insulation with a low thermal conductivity of 0.035 W m-1 k-1. Besides, it shows excellent flame retardancy with a high limit oxygen index (LOI) value up to 50.8, which is one of the highest values among the most of flame retardants reported previously. Also, a very low peak heat release rate (pHRR) of 24.12 kW m-2 was obtained which makes the aerogel composite reaching UL-94 V-0 rating. Such results may be attributed to a synergy effect by combination of its abundantly porous structure derived from HGM to give a better thermal insulation and excellent nonflammability of CSA and Mg(OH)2 to offer a superior flame retardancy. Taking advantages of its high mechanical strength, low cost materials, simple and scalable preparation method, CSA-HGM-Mg(OH)2 aerogel composites may hold great potential for future thermal insulation and flame retardant applications.
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Affiliation(s)
- Zhaoqi Zhu
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China.
| | - Ye Niu
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Shuo Wang
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Min Su
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Yong Long
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Hanxue Sun
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - Weidong Liang
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China
| | - An Li
- College of Petrochemical Technology, Lanzhou University of Technology, Langongping Road 287, Lanzhou 730050, PR China.
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