Article
Chemistry, Multidisciplinary
Martin Silhavik, Prabhat Kumar, Zahid Ali Zafar, Robert Kral, Petra Zemenova, Alexandra Falvey, Petr Jiricek, Jana Houdkova, Jiri Cervenka
Summary: The ability to protect materials from fire is crucial in various industries and life safety systems. This study demonstrates that the fire resistance of atomically thin materials can be significantly enhanced by changing their microstructure. Cellular graphene aerogels show exceptional fire-retardant and self-extinguishing properties due to their prevention of carbonyl defect formation and capture of nonflammable carbon dioxide gas in the pores.
Article
Nanoscience & Nanotechnology
Xi He, Fuli Xu, Fei-Fei Chen, Yan Yu
Summary: This study reports a modified graphene oxide (GO) sensor supported on hydroxyapatite (HA) nanowire paper modified with single-stranded deoxyribonucleic acid (ssDNA) which enhances the flame retardancy of GO through its action as a flame retardant and nitrogen doping. This work highlights the importance of biomolecules and inorganic materials in regulating the fire warning performance of GO.
ACS APPLIED NANO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Cheng-Fei Cao, Bin Yu, Zuan-Yu Chen, Yong-Xiang Qu, Yu-Tong Li, Yong-Qian Shi, Zhe-Wen Ma, Feng-Na Sun, Qing-Hua Pan, Long-Cheng Tang, Pingan Song, Hao Wang
Summary: In this study, a smart fire alarm sensor (FAS) material with mechanically robust, excellent flame retardancy, and ultra-sensitive temperature-responsive capability was developed. By decorating graphene oxide (GO) sheets with a multi-amino molecule, the optimized GO/HCPA hybrid network exhibited significant improvement in mechanical strength and comprehensive fire safety performance. Furthermore, a fireproof coating based on the GO/HCPA network showed exceptional fire shielding performance when applied in polymer foam.
NANO-MICRO LETTERS
(2022)
Article
Nanoscience & Nanotechnology
Chengxin Jiang, Lingxiu Chen, Huishan Wang, Chen Chen, Xiujun Wang, Ziqiang Kong, Yibo Wang, Haomin Wang, Xiaoming Xie
Summary: Graphene on hexagonal boron nitride (h-BN) demonstrates excellent electrical properties, which are affected by its domain size and boundaries. Chemical vapor deposition (CVD) is a hopeful method for large graphene crystal growth, but increasing the coverage of monolayer graphene on h-BN remains a challenge due to weak control of nucleation and vertical growth. In this study, an auxiliary source strategy using silicon carbide and methyl methacrylate is adopted to enhance graphene nucleation density and achieve continuous graphene films on h-BN. By optimizing the growth temperature, vertical accumulation of graphitic materials can be suppressed. This work provides an effective approach for preparing continuous graphene film on h-BN and offers insights for the growth of high-quality graphene.
Article
Chemistry, Physical
Fangzhou Yang, Huidong Zhao, Yong Wang, Guangyi Zhang, Bihe Yuan
Summary: An eco-friendly and simple layer-by-layer self-assembly process was used to create a graphene oxide and aluminum oxide hydroxide functional coating on melamine foam. The resulting composite foam exhibited good hydrophobicity and structural stability, and had the ability for ultra-fast fire detection and efficient fire-warning response.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
E. Magnano, S. Nappini, I Pis, T. O. Mentes, F. Genuzio, A. Locatelli, F. Bondino
Summary: In this study, the growth of h-BNG thin films on platinum and their behavior in an oxygen environment were investigated using surface science techniques. By selectively etching graphene and repeating growth cycles, controllable h-BNG layers and vertically stacked h-BN/Gr heterostructures were successfully obtained.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Physical
Yanbin Zhu, Gang Kong, Chunshan Che
Summary: The frequent occurrence of fires has caused serious harm to the safety of human life and property. The development of fire early warning materials with super sensitive temperature response has always been an urgent need in the field of fire safety. In this study, a surface reduced graphene oxide strip was fabricated and used as a fire early warning sensor, showing improved flame retardancy compared to pure graphene oxide strips. This work suggests that the surface reduced graphene oxide strip has promising potential as a smart sensor for fire early warning.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Article
Chemistry, Multidisciplinary
Ping Wang, Woncheol Lee, Joseph P. Corbett, William H. Koll, Nguyen M. Vu, David Arto Laleyan, Qiannan Wen, Yuanpeng Wu, Ayush Pandey, Jiseok Gim, Ding Wang, Diana Y. Qiu, Robert Hovden, Mackillo Kira, John T. Heron, Jay A. Gupta, Emmanouil Kioupakis, Zetian Mi
Summary: This study proposes a growth process mediated by an hBN/G interface for the controlled synthesis of high-quality monolayer hBN. The scalable epitaxy of unidirectional monolayer hBN on graphene aligned to the underlying graphene lattice is achieved. Additionally, it is discovered that monolayer hBN exhibits deep-ultraviolet emission with a giant renormalized direct bandgap on graphene.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Physical
Nasim Anousheh, Azar Shamloo, Seifollah Jalili, Jack A. Tuszynski
Summary: Understanding the behavior of confined electrolyte solutions in graphene-based channels is important for various scientific applications. In this study, molecular dynamics simulations were used to investigate the adsorption of NaCl electrolyte solutions in graphene, hexagonal boron nitride, and combined graphene-hexagonal boron nitride nano-channels. The study reveals the advantageous adsorption of sodium and chloride ions in the graphene-hexagonal boron nitride-graphene structure.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Forestry
Gaihuan Li, Ying Yu, Shaofei Yuan, Wenfu Zhang, Xinzhou Wang
Summary: By using chitosan and polyvinyl alcohol as film-forming substances and hexagonal boron nitride as the flame-retardant substance, h-BN flame-retardant coatings were prepared on the surface of bamboo scrimber. The results showed that the h-BN coating improved the thermal stability and flame-retardant properties of the bamboo scrimber.
Article
Engineering, Environmental
Bihe Yuan, Yong Wang, Gongqing Chen, Fangzhou Yang, Hongming Zhang, Chengran Cao, Boyu Zuo
Summary: Boric acid-modified graphene oxide (GO-BA) paper, constructed with a nacre structure, shows improved thermal-oxidative stability and can rapidly thermally reduce to conductive reduced graphene oxide under flame exposure, providing a quick flame-detection time for ideal fire-alarm response.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Thermodynamics
Bing Chen, Yingchun Liu, Kun Wu, Maoping Lu, Enxiang Jiao, Jun Shi, Mangeng Lu
Summary: By developing multifunctional flexible hybrid films using graphene oxide and boron nitride nanosheets, a high thermal conductivity and excellent flame retardancy were achieved through superior interface construction and enhanced thermal conductivity paths.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Environmental
Tingjie Chen, Zhiyong Liu, Xiaokang Hu, Gang Zhao, Zipeng Qin, John Tosin Aladejana, Xiangfang Peng, Yongqun Xie, Binghui Wu
Summary: Renewable and biodegradable plant fiber sponges (PFS) can be improved by modifying them with a highly thermo-conductive hexagonal boron nitride (h-BN) ink as a fire retardant. The modified PFS@h-BN show enhanced fire resistance, reduced smoke release, and improved mechanical performance, making them a promising material for safe and energy-efficient building applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Huibin Sun, Yunlei Jiang, Renjie Hua, Runhua Huang, Lei Shi, Yuan Dong, Suxia Liang, Jing Ni, Chi Zhang, Ruoyu Dong, Yingru Song
Summary: Graphene/BN heterostructures exhibit significant thermal rectification behavior, and the rectification ratio increases with the system length. This phenomenon is attributed to the mismatch of out-of-plane phonon vibration modes at the interface. This two-dimensional heterostructure shows promise for thermal management.
Review
Engineering, Environmental
Xi He, Yitong Feng, Fuli Xu, Fei-Fei Chen, Yan Yu
Summary: Serious fire accidents occur frequently worldwide every year, emphasizing the urgent need for sensitive fire alarm systems (FASs) that can quickly detect fires. In 2018, a new-style FAS based on graphene oxide was developed, showing a fast response time and high sensitivity. Subsequently, smart FASs based on different materials have been extensively studied. However, a comprehensive review of this field is still lacking. This article provides a thorough review of recent advances in smart FASs, discussing working mechanisms, preparation methods, challenges, and future directions.
CHEMICAL ENGINEERING JOURNAL
(2022)
Review
Chemistry, Physical
Qiang Chen, Zhewen Ma, Mingchao Wang, Zhengzhou Wang, Jiabing Feng, Venkata Chevali, Pingan Song
Summary: This article provides a comprehensive review of the design strategies, thermal conduction mechanisms, factors affecting anisotropic thermal conductivity, practical applications, challenges, and future research opportunities associated with nacre-inspired highly anisotropic nanocomposites for thermal management.
Review
Chemistry, Multidisciplinary
Lei Liu, Jiabing Feng, Yijiao Xue, Venkata Chevali, Yubai Zhang, Yongqian Shi, Long-Cheng Tang, Pingan Song
Summary: Frequent fire disasters have caused significant impacts on the environment, humans, and the economy. MXene is a potential flame retardant that can provide passive fire protection and active fire response through its physical barrier and thermoelectric effect. This article provides an overview of passive flame-retardant materials and next-generation smart fire warning materials/sensors based on MXene, discussing their design, characterization, performance, applications, and challenges for future practical use.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yijiao Xue, Jinyou Lin, Tao Wan, Yanlong Luo, Zhewen Ma, Yonghong Zhou, Bryan T. Tuten, Meng Zhang, Xinyong Tao, Pingan Song
Summary: This study reports a stretchable, supertough, and self-extinguishing polyurethane elastomer by introducing dynamic pi-pi stacking motifs and phosphorus-containing moieties. The elastomer exhibits a large break strain and a record-high toughness, which arises from its dynamic microphase-separated microstructure resulting in increased entropic elasticity and strain-hardening at large strains. The elastomer also shows a self-extinguishing ability due to the presence of phosphorus-containing units and pi-pi stacking interactions. The study demonstrates its promising applications as a reliable and recyclable substrate for strain sensors.
Article
Materials Science, Multidisciplinary
Lei Liu, Xiaodong Xu, Menghe Zhu, Xihua Cui, Jiabing Feng, Zahra Faraji Rad, Hao Wang, Pingan Song
Summary: Inspired by the hydrogen-bond cross-linking structure of spider silk, strong and tough PVA composites with beta-cyclodextrin as a cross-linker are developed, showing high tensile strength, elastic modulus, and toughness. The addition of beta-cyclodextrin also improves the biodegradability of the PVA composite. Furthermore, the PVA/beta-cyclodextrin composite combined with MXene has great potential as a sensor material for humidity and strain detection.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Engineering, Environmental
Miaohong Yao, Linghui Liu, Changchang Ma, Huan Zhang, Yan Zhang, Ruiyin Song, Zhengping Fang, Pingan Song
Summary: In this study, a bio-based sol solution was designed and prepared to improve the flame retardancy and crystallinity of polylactide (PLA), and enhance its degradability in water. The addition of a bio-based flame retardant and polyethylene glycol (PEG) resulted in PLA achieving UL94 V-0 flame retardant rating and a limited oxygen index (LOI) value of 29.4%. Furthermore, the sol solution accelerated the degradation rate of PLA in water. The study also found that degraded PLA and the flame retardant were released as oligomers during the hydrolysis process.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Lanfen Chen, Yongchuan Wu, Wenqian Xing, Qin Su, Longcheng Tang, Huaiguo Xue, Jiefeng Gao
Summary: Three dimensional composite hydrogels have been developed for solar-driven interfacial evaporation, addressing the challenges of high-performance hydrogel evaporators in terms of mechanical properties, evaporation efficiency, and durability. The composite hydrogel evaporator, with uniformly dispersed acidified carbon nanotubes (ACNTs), exhibits excellent mechanical properties and has high evaporation rate and photothermal conversion efficiency. It demonstrates outstanding salt rejection performance and long-term durability, making it a promising candidate for solar desalination applications.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Green & Sustainable Science & Technology
Guojun Deng, Mengnan Sun, Yongqian Shi, Yuezhan Feng, Yuancai Lv, Longcheng Tang, Jiefeng Gao, Pingan Song
Summary: In this study, PU-Ti3C2Tx-MOF sponges with superior hydrophobicity and adsorption capacity were prepared. They exhibited rapid adsorption ability for liquid hazardous chemicals and maintained good reusability. This work provides a new pathway for the design of functional polymer sponges and their potential application in rapid elimination of leaked hazardous chemicals.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Multidisciplinary
Miao Liu, Kexin Chen, Yongqian Shi, Hengrui Wang, Shijie Wu, Ruizhe Huang, Yuezhan Feng, Longcheng Tang, Xiaohuan Liu, Pingan Song
Summary: This study developed multifunctional polymeric materials with high fire safety, excellent mechanical performances, and electromagnetic interference shielding properties, which have great potential for practical applications.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Xiaoqing Qiu, Zhiwei Li, Venkata Chevali, Pingan Song, Xiaohong Li, Zhijun Zhang
Summary: This study reports a mesoporous silica-based ternary flame retardant (NF@SiO2-D) for unsaturated polyester (UP) by loading nickel ferrite and dimethyl methylphosphonate (DMMP) via hierarchical assembly. NF@SiO2-D acts as a fire extinguisher of UP through the combined effect of mesoporous silica, nickel ferrite, and DMMP. The UP matrix with NF@SiO2-D exhibited reduced heat release rates and smoke production, achieved a self-extinguishing ability, and demonstrated improved thermal stability and Tg compared to the control samples. The flame-retardant UP composites are expected to have more industrial applications.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Engineering, Multidisciplinary
Miao Liu, Kexin Chen, Yongqian Shi, Shijie Wu, Yuezhan Feng, Libi Fu, Jiefeng Gao, Longcheng Tang, Fuqiang Yang
Summary: Researchers have developed a feasible and low-cost method to prepare mechanically robust TPU/PZM@CP/CF nanocomposites, which possess enhanced fire retardancy and EMI shielding performances. The nanocomposites exhibit excellent mechanical toughness and superior EMI shielding effectiveness. Furthermore, the thermal stability and fire resistance of the nanocomposites are significantly improved.
COMPOSITES PART B-ENGINEERING
(2023)
Article
Chemistry, Physical
Jun Yan, Yongchuan Wu, Zheng Guo, Qin Su, Wenqian Xing, Jing Wen, Longcheng Tang, Junwei Zha, Jiefeng Gao
Summary: Chemical spills, especially oil spills, are becoming an increasingly serious environmental issue. In this study, an environmentally friendly emulsion spray-coating method is proposed to fabricate durable foam composites with asymmetric wettability for oil-water separation. The foam composite exhibits gradient wettability and can separate oils with different densities, with a high separation efficiency for chloroform.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Wen-Yu Hu, Ke-Xin Yu, Qi-Na Zheng, Qi-Liang Hu, Cheng-Fei Cao, Kun Cao, Weifu Sun, Jie-Feng Gao, Yongqian Shi, Pingan Song, Long-Cheng Tang
Summary: An intelligent fire warning material based on montmorillonite has been developed, which shows excellent cyclic warning performance and reliable flame retardancy.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yang Tang, Jun Yan, Wei Xiao, Xuewu Huang, Longcheng Tang, Yongqian Shi, Pingan Song, Jiefeng Gao
Summary: In this study, an asymmetric nanofibrous membrane (ANM) with unidirectional water transport capability was reported. The membrane consists of a superhydrophilic MXene/Chitosan/Polyurethane nanofiber membrane and an ultrathin hydrophobic Polyurethane/Polyvinylpyrrolidone layer with a bead-on-string structure. The ANM exhibits long-term stability and can withstand cyclic stretching, abrasion, and ultrasonic washing tests. It also serves as a temperature sensor and displays unique anti-gravity behavior when attached to the skin. The stretchable, wearable, and multi-functional nanofibrous composite membrane shows potential applications in flexible electronics, wearable devices, and health monitoring.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Environmental
Jiahao Ren, Siqi Huo, Guobo Huang, Tianle Wang, Jiabing Feng, Wei Chen, Shenwei Xiao, Pingan Song
Summary: The widespread use of highly flammable ABS resin poses a great fire threat to humans and the environment. However, current flame retardants often sacrifice mechanical and thermal properties while improving flame retardancy. In this study, a novel phosphorus and nickel co-doped graphitic carbon nitride nanoflakes were developed to address this trade-off. The addition of the new material significantly improved the thermal and mechanical properties of ABS composite, resulting in excellent anti-ignition, flame-retardant, and smoke-suppressive performances. This research provides a new design strategy for fabricating fire-safe polymer composites with superior properties.
CHEMICAL ENGINEERING JOURNAL
(2023)
