New strategy for microplastic degradation: Green
The ATR-FTIR spectra of both materials exhibited similar bands, confirming the presence of TiO 2 and the incorporation of nitrogen into the semiconductor network (Fig. 2).The band observed at 702 cm-1 corresponded to the Ti-O stretching and Ti-O-Ti bridging stretching bonds [30], [31]; while the band observed at 1630 cm-1 corresponded to the …
Cracking in films of titanium dioxide nanoparticles with …
We present an experimental investigation into how altering the inter-particle potential between colloids affects the cracking of a ca. 100 μ m film deposited on a hard substrate. The colloidal material used was titanium dioxide (r ≈ 30 nm) in an aqueous solvent with interaction strength being adjusted through alteration of the pH away from …
Development status of crosslinking agent in high …
The second mechanism is the condensation of the Ti–OH base of the titanium dioxide and the OH group in guar gum. Using integral-based ζ for potential, ... For the fracturing fluid with the metal crosslinking agent, the thickening and crosslinking agents had relatively stable chemical bonds (coordination bonds), which provided the ...
Hydraulic Fracturing (Fracking) | Council on …
Hydraulic Fracturing (Fracking) Hydraulic fracturing has unlocked huge reserves of shale gas and oil, transforming the energy outlook in the United States and the world, even as local opposition ...
Pressure transmission in the tubing of supercritical carbon dioxide …
CO 2 fracturing is a critical technique for carbon capture, utilization, and storage (CCUS). It has a crucial role in oil-gas development and combating climate change. ... Fabrication of anthocyanin-sensitized nanocrystalline titanium dioxide solar cells using supercritical carbon dioxide. Journal of CO2 Utilization, Volume 21, 2017, pp. 513-520.
Titanium Dioxide
Titanium dioxide (TiO2, also known as titanium (IV) oxide or titania) is the naturally occurring oxide of titanium. When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891. Generally, it is produced from ilmenite, rutile, and anatase. It has a wide range of applications, from paint to sunscreen lotion to food ...
Preparation and performance evaluation of nanoparticle …
A new cationic trimer surfactant was sythesized by two steps. • Nano-TiO 2 modified clean fracturing fluids containing the cationic trimer surfactant (VES-N) were prepared.. Nano-TiO 2 can signicantly increases the temperature resistance of VES-N clean fracturing fluids.. VES-N shows a very good fracturing stimulation effect in low …
Experimental Investigation on Enhanced-Oil-Recovery
Summary. Fracturing is the necessary means of tight oil development, and the most common fracturing fluid is slickwater. However, the Loess Plateau of the Ordos Basin in China is seriously short of water resources. Therefore, the tight oil development in this area by hydraulic fracturing is extremely costly and environmentally unfriendly. In …
Titanium Dioxide: Structure, Impact, and Toxicity
Titanium dioxide (TiO 2) is a white powder extensively used to decontaminate water and food, ensuring environmental and industrial safety, while also …
Effects of graphene on morphology, fracture toughness, and …
Highlights. •. Graphene nanoplatelets were chosen to improve morphology, fracture toughness, and electrical conductivity of the TiO 2. •. The TiO 2 composite with …
Titanium dioxide | Description & Uses | Britannica
titanium dioxide, (TiO 2), a white, opaque, naturally occurring mineral existing in a number of crystalline forms, the most important of which are rutile and anatase.These naturally occurring …
TiO2 Manufacturing Process: Raw Material, Application …
In global practice, high-dispersion titanium dioxide pigment is produced by the sulfate (sulfuric acid) and chloride methods. The sulfate method is based on the decomposition of ilmenite concentrates containing 45-56% TiO2 or titanium slags with a content of 75-80% TiO2, with subsequent conversion of titanium sulfates into dioxide.
Hydraulic Fracturing Basics | American Geosciences Institute
Hydraulic fracturing opens narrow cracks in rock layers in order to allow oil, gas, or water to flow through the rock. During hydraulic fracturing, pressurized fluid is injected through a well into a subsurface rock layer in order to open the fractures. Hydraulic fracturing requires large volumes of water mixed with chemicals and proppants ...
TITANIUM DIOXIDE
TITANIUM DIOXIDE CAS number: 1 Synonyms: Anatase; Brookite; Rutile Molecular formula: TiO 2 TLV–TWA, 0.2 mg/m 3, Respirable particulate matter (nanoscale particles) TLV–TWA, 2.5 mg/m 3, Respirable particulate matter (fine-scale particles) A3—Confirmed Animal Carcinogen with Unknown Relevance to Humans
Titanium dioxide and zinc oxide nanoparticles in …
Minerals like zinc oxide (ZnO) and titanium dioxide (TiO 2) are frequently used as inorganic physical sun blockers. They are preferred above organic compounds that solely absorb UV radiation. 9 Advantages offered by sunscreens based on inorganic compounds comprise absence of skin irritation and sensitization, ...
Fracturing with Carbon Dioxide: From Microscopic Mechanism …
Summary. Water fracturing is widely employed as a reservoir-stimulating technology for the recovery of unconventional oil and gas. However, the process suffers from massive water consumption and environmental concerns. Therefore, alternative fracturing fluids are desired. In recent years, fracturing with CO 2 was proposed to …
Toxicity of Titanium Dioxide Nanoparticles and Oxidative …
Titanium dioxide nanoparticles (TiO 2 NPs) are being used in food and other commonly used products on a large scale. As such, exposure to humans and environment has raised concerns regarding their toxic potential. Studies have reported that upon exposure to humans, TiO 2 NPs accumulate and induce oxidative damage, genotoxicity, …
Development of Antifreeze Fracturing Fluid Systems
DOI: 10.1021/ACS.ENERGYFUELS.1C01819 Corpus ID: 237718363; Development of Antifreeze Fracturing Fluid Systems for Tight Petroleum Reservoir Stimulations @article{Wu2021DevelopmentOA, title={Development of Antifreeze Fracturing Fluid Systems for Tight Petroleum Reservoir Stimulations}, …
(PDF) Impact of Titanium Dioxide in the Mechanical
Impact of Titanium Dioxide in the Mechanical Recycling of Post-Consumer Polyethylene Terephthalate Bottle Waste: Tensile and Fracture Behavior. January …
Hydraulic fracturing
The first hydraulic fracturing treatment was pumped in 1947 on a gas well operated by Pan American Petroleum Corp. in the Hugoton field. [1] Kelpper Well No. 1, located in Grant County, Kansas, was a low-productivity well, even though it had been acidized. The well was chosen for the first hydraulic fracture stimulation treatment so that ...
Fracturing fluid waste liquid disposal by using nanometer TiO2 …
TiO2 ″700 °C″ exhibits much higher photocatalytic activity than commercial TiO2 photocatalysts (″Degussa P-25″, ″Millennium PC-500″ and ″Hombikat UV-100″).
Corrosion of Titanium: Part 1: Aggressive …
In the presence of dissolved oxygen in the hot acid, the Ti 3+ ions are oxidized to Ti 4+ ions, and the latter subsequently hydrolyzes to …
IJERPH | Free Full-Text | Titanium Dioxide: …
Titanium dioxide, first manufactured a century ago, is significant in industry due to its chemical inertness, low cost, and availability. The white mineral has a wide range of applications in …
Titanium-based materials: synthesis, properties, and …
The synthesis method, which involves reducing titanium dioxide by carbon black at high temperatures, is responsible for the insufficient fracture toughness of …
Full article: The Effect of Silver, Zinc Oxide, and Titanium …
The Effect of Silver, Zinc Oxide, and Titanium Dioxide Nanoparticles Used as Final Irrigation Solutions on the Fracture Resistance of Root-Filled Teeth. Zahra …
New Tracers Identify Hydraulic Fracturing Fluids and …
Identifying the geochemical fingerprints of fluids that return to the surface after high volume hydraulic fracturing of unconventional oil and gas reservoirs has important applications for assessing hydrocarbon resource recovery, environmental impacts, and wastewater treatment and disposal. Here, we report for the first time, novel diagnostic elemental and …
Life cycle assessment comparison of emerging and
1. Introduction. Titanium dioxide (TiO 2) has been commercially available as a whitening agent since the early 20th century.TiO 2 has the highest refractive index (2.4–2.7) of any other inorganic pigment, imparting a high level of opacity to other materials to which it is added (Khataee and Mansoori, 2012).It has been a critical additive in …
What foods have titanium dioxide? What to know after …
Non-chocolate candy led those numbers at 32%. Cupcakes and snack cakes made up 14%, followed by cookies at 8%, coated pretzels and trail mix at 7%, baking decorations at 6%, gum and mints at 4% ...
Design and development of CaCO3 nanoparticles enhanced fracturing …
In order to understand the filtration control mechanisms of the NPs enhanced fracturing fluids, the field emission scanning electron microscope images of the shale samples were analyzed, which provided detailed description of how NPs are attached to the shale surface. This research presents new information about the nanoparticles (NPs) …
Titanium Dioxide
Titanium dioxide (TiO2) is a fine white powder or dust that occurs naturally. It was first intentionally produced for use as a white pigment in 1923. [2] It is naturally opaque and bright, which makes it useful for use in paper, ceramics, rubber, textiles, paints, inks and cosmetics. [3] It is also resistant to ultraviolet (UV) light, and is ...
