Chao Li, Juncheng Jiang*, Lanjuan Xu, Lei Ni and Xinlei Jia,
{"title":"用于降低聚苯乙烯火灾危险的掺杂杂原子的石墨碳氮化物","authors":"Chao Li, Juncheng Jiang*, Lanjuan Xu, Lei Ni and Xinlei Jia, ","doi":"10.1021/acsanm.4c00862","DOIUrl":null,"url":null,"abstract":"<p >High fire hazard, including heat release and toxic volatile production, has been the bottleneck in expanding the application of polystyrene (PS). Here, a heteroatom doping strategy is adopted to strengthen the flame-retardant effect of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) on PS. It is observed that the doped g-C<sub>3</sub>N<sub>4</sub> fillers (PCN-1, PCN-2, PCN-3, BCN-1, BCN-2, BCN-3, PBCN-1, PBCN-2, and PBCN-3) show nanosheet-like morphologies, while common g-C<sub>3</sub>N<sub>4</sub> presents bulky morphology. Also, the doped g-C<sub>3</sub>N<sub>4</sub> fillers show higher thermal stability than common g-C<sub>3</sub>N<sub>4</sub>. Consequently, the doped g-C<sub>3</sub>N<sub>4</sub> fillers show a better dispersion state in the PS matrix, benefiting the generation of an efficient barrier network. Cone results reveal that using the doped g-C<sub>3</sub>N<sub>4</sub> fillers endows the polymer with a lower peak heat release rate, a peak smoke production rate, and a peak CO yield (PCOY). Typically, adding CN results in corresponding reductions of 7.2, 3.74, and 12.4%, respectively. By contrast, incorporating PCN-2 leads to decreases of 39.9, 23.0, and 53.2%, respectively. Thermogravimetric analysis/infrared spectrometry analysis indicates that the use of these additives contributes to the inhibition of the release of decomposed volatiles. Thus, it is firmly believed that utilizing heteroatom-doped g-C<sub>3</sub>N<sub>4</sub> impairs the fire hazard of the polymer.</p>","PeriodicalId":6,"journal":{"name":"ACS Applied Nano Materials","volume":null,"pages":null},"PeriodicalIF":5.3000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Heteroatom-Doped Graphitic Carbon Nitrides for Reducing the Fire Hazard of Polystyrene\",\"authors\":\"Chao Li, Juncheng Jiang*, Lanjuan Xu, Lei Ni and Xinlei Jia, \",\"doi\":\"10.1021/acsanm.4c00862\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p >High fire hazard, including heat release and toxic volatile production, has been the bottleneck in expanding the application of polystyrene (PS). Here, a heteroatom doping strategy is adopted to strengthen the flame-retardant effect of graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) on PS. It is observed that the doped g-C<sub>3</sub>N<sub>4</sub> fillers (PCN-1, PCN-2, PCN-3, BCN-1, BCN-2, BCN-3, PBCN-1, PBCN-2, and PBCN-3) show nanosheet-like morphologies, while common g-C<sub>3</sub>N<sub>4</sub> presents bulky morphology. Also, the doped g-C<sub>3</sub>N<sub>4</sub> fillers show higher thermal stability than common g-C<sub>3</sub>N<sub>4</sub>. Consequently, the doped g-C<sub>3</sub>N<sub>4</sub> fillers show a better dispersion state in the PS matrix, benefiting the generation of an efficient barrier network. Cone results reveal that using the doped g-C<sub>3</sub>N<sub>4</sub> fillers endows the polymer with a lower peak heat release rate, a peak smoke production rate, and a peak CO yield (PCOY). Typically, adding CN results in corresponding reductions of 7.2, 3.74, and 12.4%, respectively. By contrast, incorporating PCN-2 leads to decreases of 39.9, 23.0, and 53.2%, respectively. Thermogravimetric analysis/infrared spectrometry analysis indicates that the use of these additives contributes to the inhibition of the release of decomposed volatiles. Thus, it is firmly believed that utilizing heteroatom-doped g-C<sub>3</sub>N<sub>4</sub> impairs the fire hazard of the polymer.</p>\",\"PeriodicalId\":6,\"journal\":{\"name\":\"ACS Applied Nano Materials\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":5.3000,\"publicationDate\":\"2024-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"ACS Applied Nano Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://pubs.acs.org/doi/10.1021/acsanm.4c00862\",\"RegionNum\":2,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Nano Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsanm.4c00862","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Heteroatom-Doped Graphitic Carbon Nitrides for Reducing the Fire Hazard of Polystyrene
High fire hazard, including heat release and toxic volatile production, has been the bottleneck in expanding the application of polystyrene (PS). Here, a heteroatom doping strategy is adopted to strengthen the flame-retardant effect of graphitic carbon nitride (g-C3N4) on PS. It is observed that the doped g-C3N4 fillers (PCN-1, PCN-2, PCN-3, BCN-1, BCN-2, BCN-3, PBCN-1, PBCN-2, and PBCN-3) show nanosheet-like morphologies, while common g-C3N4 presents bulky morphology. Also, the doped g-C3N4 fillers show higher thermal stability than common g-C3N4. Consequently, the doped g-C3N4 fillers show a better dispersion state in the PS matrix, benefiting the generation of an efficient barrier network. Cone results reveal that using the doped g-C3N4 fillers endows the polymer with a lower peak heat release rate, a peak smoke production rate, and a peak CO yield (PCOY). Typically, adding CN results in corresponding reductions of 7.2, 3.74, and 12.4%, respectively. By contrast, incorporating PCN-2 leads to decreases of 39.9, 23.0, and 53.2%, respectively. Thermogravimetric analysis/infrared spectrometry analysis indicates that the use of these additives contributes to the inhibition of the release of decomposed volatiles. Thus, it is firmly believed that utilizing heteroatom-doped g-C3N4 impairs the fire hazard of the polymer.
期刊介绍:
ACS Applied Nano Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics and biology relevant to applications of nanomaterials. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important applications of nanomaterials.