{"id":295,"date":"2021-07-20T03:02:41","date_gmt":"2021-07-20T08:02:41","guid":{"rendered":"https:\/\/www.cd-bioparticles.com\/blog\/?p=295"},"modified":"2021-07-20T03:02:41","modified_gmt":"2021-07-20T08:02:41","slug":"what-are-carbon-nanotubes","status":"publish","type":"post","link":"https:\/\/www.cd-bioparticles.com\/blog\/nanoparticles\/what-are-carbon-nanotubes\/","title":{"rendered":"What Are Carbon Nanotubes?"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"666\" src=\"\/blog\/wp-content\/uploads\/2021\/07\/Carbon-Nanotubes-1024x666.jpg\" alt=\"Carbon Nanotubes\" class=\"wp-image-296\" srcset=\"\/blog\/wp-content\/uploads\/2021\/07\/Carbon-Nanotubes-1024x666.jpg 1024w, \/blog\/wp-content\/uploads\/2021\/07\/Carbon-Nanotubes-300x195.jpg 300w, \/blog\/wp-content\/uploads\/2021\/07\/Carbon-Nanotubes-768x499.jpg 768w, \/blog\/wp-content\/uploads\/2021\/07\/Carbon-Nanotubes.jpg 1903w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><a href=\"https:\/\/www.cd-bioparticles.com\/l\/Carbon-Nanomaterials_258_306_0.html%20\">Carbon\nnanotubes<\/a> (CNTs) are allotropes of carbon, made of graphite and constructed\nin cylindrical tubes with nanometer in diameter and several millimeters in\nlength. Their impressive structural, mechanical, and electronic properties are\ndue to their small size and mass, their strong mechanical potency, and their\nhigh electrical and thermal conductivity. <\/p>\n\n\n\n<p>What are the structure and properties of carbon nanotubes?<\/p>\n\n\n\n<p>It is well known that CNTs are intrinsically composed of\npure carbon atoms that arrange and interact with each other by the strong sp<sup>2<\/sup>\ncarbon-carbon chemical bonds and form the unique geometric structure of a\ncarbon network; this gives CNTs fascinating and attractive properties.<\/p>\n\n\n\n<p>How strong is a carbon nanotube?<\/p>\n\n\n\n<p>Like graphene, nanotubes are strong, and they conduct electricity\nbecause they have delocalized electrons. The tensile strength of carbon\nnanotubes is about 100 times that of steel with the same diameter.<\/p>\n\n\n\n<p>How does a carbon nanotube work?<\/p>\n\n\n\n<p>Because of their small size, nanotubes can selectively\ncapture and retain small gas molecules inside. The adsorption of one molecule\nwithin another molecule provides a unique opportunity to control substances on\nthe nanoscale. <\/p>\n\n\n\n<p>Are carbon nanotubes toxic?<\/p>\n\n\n\n<p>CNTs are considered to have carcinogenicity and can cause\nlung tumors. However, the carcinogenicity of CNTs may attenuate if the fiber\nlength is shorter. The available data provide initial information on the\npotential reproductive and developmental toxicity of CNTs.<\/p>\n\n\n\n<p>Is graphene toxic?<\/p>\n\n\n\n<p>Rationales provided for this are that graphene is not\ntoxic, that exposure is low, that small amounts are expected to be produced and\nused, that graphene can be made safe, that graphene is similar to harmless\nmaterials (e.g., being \u201cjust carbon\u201d), and that graphene is different from\nhazardous materials such as carbon nanotubes.<\/p>\n\n\n\n<p>What is the use of carbon nanotubes?<\/p>\n\n\n\n<p>Carbon nanotubes have been first used as additives to\nvarious structural materials for electronics, optics, plastics, and other\nmaterials of nanotechnology fields. Since the beginning of the 21st century,\nthey have been introduced in pharmacy and medicine for drug delivery system in\ntherapeutics.<\/p>\n\n\n\n<p>Applications in pharmacy and medicine?<\/p>\n\n\n\n<p>CNTs have been successfully applied in pharmacy and\nmedicine due to their high surface area that is capable of adsorbing or\nconjugating with a wide variety of therapeutic and diagnostic agents (drugs,\ngenes, vaccines, antibodies, biosensors, etc.). They have been first proven to\nbe an excellent vehicle for drug delivery directly into cells without\nmetabolism by the body. Then other applications of CNTs have been extensively\nperformed not only for drug and gene therapies but also for tissue\nregeneration, biosensor diagnosis, enantiomer separation of chiral drugs,\nextraction and analysis of drugs and pollutants. Moreover, CNTs have been\nrecently revealed as a promising antioxidant. <\/p>\n\n\n\n<p>About the author AS a supplier of high quality carbon nanomaterials, CD Bioparticles offers carbon nanotubes, nanofibers, carbon quantum dots, and graphene for global researchers. Our carbon nanotube products include single-walled, double-walled and multi-walled structures with different sizes and surface modifications. These carbon nanotubes are manufactured by catalytic chemical vapor deposition (CVD) method and available with various options, ranging from regular nanotubes to short-length, aligned, dispersible or functionalized nanotubes. <\/p>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\"><p> He, H., Pham-Huy, L. A., Dramou, P., Xiao, D., Zuo, P., &amp; Pham-Huy, C. (2013). Carbon nanotubes: applications in pharmacy and medicine. BioMed research international, <br> 2013.Kobayashi, N., Izumi, H., &amp; Morimoto, Y. (2017). Review of toxicity studies of carbon nanotubes. Journal of occupational health, 17-0089.<br> Peng, H., Li, Q., &amp; Chen, T. (Eds.). (2016). Industrial applications of carbon nanotubes. William Andrew. <\/p><\/blockquote>\n","protected":false},"excerpt":{"rendered":"<p>Carbon nanotubes (CNTs) are allotropes of carbon, made of graphite and constructed in cylindrical tubes with nanometer in diameter and<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[9],"class_list":["post-295","post","type-post","status-publish","format-standard","hentry","category-nanoparticles","tag-carbon-nanotubes"],"_links":{"self":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/295","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/comments?post=295"}],"version-history":[{"count":1,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/295\/revisions"}],"predecessor-version":[{"id":297,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/295\/revisions\/297"}],"wp:attachment":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/media?parent=295"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/categories?post=295"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/tags?post=295"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}