Manganese-doped tungsten disulfide microcones as binder-free electrode for high performance asymmetric supercapacitor

Synthetization and characterization of SnCaAl2O3 nanocomposite and using as a superior adsorbent for Pb, Zn, and Cd ions in polluted water

“…XRD examination validated the chemical structure and acquired phase of the as-synthesized nanoparticles. The crystallite size of the as-synthesized materials can be determined using the Scherrer formula (2) and the resultant diffraction peaks [ 13 ], in addition to phase confirmation [ 14 ]. Fig 3 illustrates the X-ray diffractogram of the formed samples, indicating the creation of the Al 2 O 3 species by the four typical peaks at 2θ of 32°, 37.4°, 45.2°, and 67.5° with comparable reflection planes of 220, 311, 400, and 440.…”

“…XRD examination validated the chemical structure and acquired phase of the as-synthesized nanoparticles. The crystallite size of the as-synthesized materials can be determined using the Scherrer formula (2) and the resultant diffraction peaks [13], in addition to phase confirmation [14].…”

“…Heavy metals can pass through the water stream, air, and soil for long distances, so it is too difficult to assess their impact on the environment [10]. Heavy metals can stand stable for many years without decomposition resulting in various risks [11][12][13]. Heavy metals removal from wastewater can be applied using different techniques such as ion exchange, reverse osmosis, separation with flotation, adsorption, and absorption.…”

Redispersible Reduced Graphene Oxide Prepared in a Gradient Solvent System

“…GO can be obtained in large quantities as colloidal dispersions in water that are considered promising precursors for the mass production of chemically RGO [1][2][3]. RGO is widely used in making conductive films, heat-dissipation films can be spun into highperformance graphene fibers, energy storage, supercapacitors, etc., [4][5][6][7][8][9][10], due to its unique structure [11]. Numerous chemical methods for the reduction of graphene oxide have been reported [12][13][14][15][16][17].…”

Facile Synthesis and Characterization of Novel Carbon Nanofiber-Doped MWO4 (M–Mn, Co, Ni, Mn–Co, Mn–Ni, Ni–Co)-Based Nanostructured Electrode Materials for Application in Electrochemical Supercapacitors and Photoelectrochemical Water Splitting

“…The limited reserves of fossil fuels and their threat to the environment are the main causes of the focus of researchers on alternative energy sources. , Recently, electrochemical energy storage sources, such as electrochemical supercapacitors, have received considerable attention in research and development because of their high power densities, long life spans, fast charge/discharge rates, and low maintenance costs , based on the remarkable specific powers (∼10 kW kg –1 ) of supercapacitors, which are commonly used in applications that require more power, such as satellites, electric vehicles, and robotic devices. , Similarly, hydrogen (H 2 ) is also becoming a main source of fuel, as it is clean, efficient, and eco-friendly, and it is manufactured via the steam reforming and gasification of coal from fossil fuels. During the reforming and gasification process, H 2 is produced along with harmful gases such as CO and CO 2 as byproducts, which cause secondary pollution , Therefore, water splitting is a better way to harvest hydrogen using energy obtained from renewable sources, such as sun, wind, and hydropower.…”