What is the surface area of graphene oxide?

Graphene oxide was fully exfoliated in water to obtain monolayer graphene oxide/water solutions. Its specific surface area was theoretically calculated to be about 2418 m2/g, and was measured to be approximately 2391 (±1292) m2/g.

Is graphene oxide safety data sheet?

This substance is not classified as dangerous according to Directive 67/548/EEC. This substance/mixture contains no components considered to be either persistent, bioaccumulative and toxic (PBT), or very persistent and very bioaccumulative (vPvB) at levels of 0.1% or higher.

Is graphene oxide hazardous?

Eye Contact: May cause eye irritation Skin Contact: No known hazards, but may be mildly irritating Inhalation: May cause irritation to respiratory tract Ingestion: No known hazards, but may irritate gastrointestinal tract Acute and Chronic High concentration of dusts may be irritating to eyes, skin, Health Effects: …

How do you find surface area in calculus?

Surface Area of a Surface of Revolution Surface Area=∫ba(2πf(x)√1+(f′(x))2)dx. Surface Area = ∫ a b ( 2 π f ( x ) 1 + ( f ′ ( x ) ) 2 ) d x . Surface Area=∫dc(2πg(y)√1+(g′(y))2)dy.

How do you find a specific surface area?

The most common method of measuring the specific surface area at present is the volumetric method of N2 adsorption on the surface of the material under study. The specific surface is calculated by the volume of gas required for the formation of a monolayer of adsorbate molecules on the sample surface.

Is graphene oxide a carcinogen?

At this stage, the Material Safety Data Sheet governing the industrial use of graphene is incomplete. It’s listed as a potential irritant of skin and eyes, and potentially hazardous to breathe in or ingest. No information is available on whether it has carcinogenic effects or potential developmental toxicity.

How toxic is graphene?

Rationales provided for this are that graphene is not toxic, that exposure is low, that small amounts are expected to be produced and used, that graphene can be made safe, that graphene is similar to harmless materials (e.g., being “just carbon”), and that graphene is different from hazardous materials such as carbon …

Is graphene oxide nanoparticles toxic?

Numerous results have shown that graphene materials cause dose-dependent toxicity in animals and cells, such as liver and kidney injury, lung granuloma formation, decreased cell viability and cell apoptosis [130–134].

Is graphene oxide a carbon?

Graphene oxide (GO) is known as a nonstoichiometric chemical compound of oxygen-functionalized derivatives, monolayer carbon atoms with oxygen-containing functional moieties.

What is the shape of graphene oxide?

Graphene is a two-dimensional carbon allotrope. It is composed of carbon atoms positioned in a hexagonal design, which can be said to resemble a chicken wire. A single layer of carbon atoms arranged in such a honeycomb structure forms a single graphene sheet.

How do you find the area of a frustum?

Total surface area of a conical frustum: A = π * (r12 + r22 + (r1 + r2) * s) = π * [ r12 + r22 + (r1 + r2) * √((r1 – r2)2 + h2) ]

Is graphene harmful to the human body?

Is graphene dangerous for humans? A 2016 study showed that graphene-base materials (like graphene oxide) might cause dose-dependent toxicity, decreased cell viability, formations of lung granuloma, and cell apoptosis. 4 mg, where it was found to deposit in the lungs, liver, spleen, and kidneys. It is important to note that this.

What is graphene used for?

Graphene is a disruptive technology; one that could open up new markets and even replace existing technologies or materials. It is when graphene is used both to improve an existing material and in a transformational capacity that its true potential can be realised.

Is graphene soluble in water?

Water-soluble graphite is exactly what it sounds like. It’s simply graphite that is soluble in water. Sure, regular graphite can be spread with water a small bit, but this medium is different. When water-soluble graphite is mixed with water, it becomes almost like ink wash.

What is graphite oxide?

Graphite oxide, formerly called graphitic oxide or graphitic acid, is a compound of carbon, oxygen, and hydrogen in variable ratios, obtained by treating graphite with strong oxidizers.