{"id":298,"date":"2021-07-20T03:05:04","date_gmt":"2021-07-20T08:05:04","guid":{"rendered":"https:\/\/www.cd-bioparticles.com\/blog\/?p=298"},"modified":"2021-07-20T03:05:04","modified_gmt":"2021-07-20T08:05:04","slug":"graphene-and-water-treatment","status":"publish","type":"post","link":"https:\/\/www.cd-bioparticles.com\/blog\/nanoparticles\/graphene-and-water-treatment\/","title":{"rendered":"Graphene and Water Treatment"},"content":{"rendered":"\n<figure class=\"wp-block-image\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"768\" src=\"\/blog\/wp-content\/uploads\/2021\/07\/Graphene-and-Water-Treatment-1024x768.jpg\" alt=\"Graphene and Water Treatment\" class=\"wp-image-299\" srcset=\"\/blog\/wp-content\/uploads\/2021\/07\/Graphene-and-Water-Treatment-1024x768.jpg 1024w, \/blog\/wp-content\/uploads\/2021\/07\/Graphene-and-Water-Treatment-300x225.jpg 300w, \/blog\/wp-content\/uploads\/2021\/07\/Graphene-and-Water-Treatment-768x576.jpg 768w, \/blog\/wp-content\/uploads\/2021\/07\/Graphene-and-Water-Treatment.jpg 1903w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p>Graphene\nhas the advantages of large specific surface area, high strength, good chemical\nstability, strong modifiability, and good electrical conductivity, which can\nnot only absorb organic solvents, heavy metals, and other pollutants in water\nbut also be used as a catalyst carrier to catalyze the degradation of\npollutants in water, so it has been widely studied as a sewage treatment\nmaterial.<\/p>\n\n\n\n<p>Water\nis the source of life, whether for human beings, animals and plants, or\nmicrobes. However, with the development of industry, a variety of heavy metal\nions are discharged into the water body, absorbed by animals and plants, and\ncondensed into the human body along with the food chain. Heavy metal ions can\nstrongly interact with proteins and various enzymes in the human body, making\nthem inactive, and may also accumulate in some organs of the human body. If it\nexceeds the limit that the human body can tolerate, it will cause acute\npoisoning, chronic poisoning, and so on, which will seriously endanger human\nhealth.<\/p>\n\n\n\n<p>Characteristics\nof different graphene<\/p>\n\n\n\n<p>1.\nGraphene oxide<\/p>\n\n\n\n<p>Graphene\noxide is the most important graphene adsorbent because of its low price, easy\nproduction, and large adsorption capacity. At the same time, it is also the raw\nmaterial for the preparation of reduced graphene oxide.<\/p>\n\n\n\n<p>2.\nFunctionalized graphene<\/p>\n\n\n\n<p>In\norder to make the adsorbent have better performance, graphene can be\nfunctionalized by chemical modification. The purpose of functionalization is to\nadd some groups that can strongly interact with pollutant molecules to graphene\nmaterials. Functionalized graphene plays an important role in the development\nof graphene adsorbents.<\/p>\n\n\n\n<p>3.\nReduced graphene oxide <\/p>\n\n\n\n<p>Reduced\ngraphene oxide is another important graphene adsorbent. Reduced graphene oxide\ncontains a small number of oxygen atoms, so reduced graphene oxide is also\nnegatively charged. But it carries far less negative charge than graphene oxide<\/p>\n\n\n\n<p>Adsorption\nof heavy metal ions by graphene<\/p>\n\n\n\n<p>Due to\nthe diversity of graphene and functional groups, as well as the chemical\ncomplexity of the heavy metal aqueous solution, a large number of graphene and\nits composites can be used to adsorb heavy metal ions. For example, graphene\noxide is a carbon nanomaterial prepared from natural graphite with a structure\nsimilar to that of carbon nanotubes. Compared with the adsorption capacity of\nactivated carbon, carbon nanotubes, and graphene materials for low\nconcentration lead wastewater, the adsorption capacity of graphene oxide to\nlead is as high as 800mg\/g, which is much higher than that of 60 to 120mg\/g of\nactivated carbon; at the same time, graphene oxide has a very strong\nregeneration capacity, and the adsorption capacity of graphene oxide decreases\nonly 5 to 10% after repeated adsorption\/elution cycles.<\/p>\n\n\n\n<p>In\ngeneral, the adsorption capacity is strongly dependent on the pore structure\nand specific surface of the adsorbent, so the absorption for heavy metal ions\nis largely attributed to the ion exchange or chemical adsorption of specific\nadsorption sites on the surface of the adsorbent. Many graphene composites can\nadsorb not only a variety of heavy metals but also dyes and other organic\npollutants at the same time. In addition, graphene-based photocatalysts can\nalso be widely used in various fields. Researchers also found that increasing\nlight to the carbon material adsorbent during the adsorption process will\nincrease the cytotoxicity of the adsorbent, thus playing a role in\nbacteriostasis and sterilization.\n\nAs\na new nano-material in the 21st century, graphene has made great achievements\nin the adsorption of heavy metal ions. Moreover, graphene has other effects in\nthe treatment of water pollution. The photocatalysis of graphene is a sharp\ntool to control black and odorous water, and it will not be dispersed in the\nwater to produce toxicity. If we fully tap the advantages of graphene, graphene\nwill set off a new technological storm.\n\n\n\n<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Graphene has the advantages of large specific surface area, high strength, good chemical stability, strong modifiability, and good electrical conductivity,<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7,2],"tags":[29],"class_list":["post-298","post","type-post","status-publish","format-standard","hentry","category-applications","category-nanoparticles","tag-graphene"],"_links":{"self":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/298","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=298"}],"version-history":[{"count":1,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/298\/revisions"}],"predecessor-version":[{"id":300,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/posts\/298\/revisions\/300"}],"wp:attachment":[{"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/media?parent=298"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/categories?post=298"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cd-bioparticles.com\/blog\/wp-json\/wp\/v2\/tags?post=298"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}