Assisting the carbonization of biowaste with potassium formate to fabricate oxygen-doped porous biochar sorbents for removing organic pollutant from aqueous solution

Microwave-plasma induced one-step synthesis of Ni(PO3)2 nanosphere-loaded bio-waste derived N, P co-doped carbon for an asymmetric supercapacitor with prolonged life

“…For example, sulphur (S) doped carbon has been developed from waste tea leaves under microwave irradiation to achieve a capacitance of 144.7 F g À1 at 1 A g À1 but with limited capacitance retention (B54%) performance up to 10 000 cycles. 9 Similarly, N, 10 oxygen (O), 11 P, 12 fluorine (F), 13,14 and boron (B) 15 doped/co-doped bio-waste derived carbon-based supercapacitive electrodes have been investigated but either they suffer from low capacitance and short cycle life or they require multi-step synthesis which limits the scale of production and affordability. So, composites of biowaste derived carbon and suitable transition metal based pseudocapacitive materials like phosphates, 16 phosphides, 17 oxides 18,19 and chalcogenides 20 have been tested to achieve high capacitance with the pseudocapacitive contribution from pseudocapacitive materials and controlled rate and cycle performance from the bio-waste derived carbon network.…”

Temperature-Dependent Adsorption Process of Neonicotinoid Insecticide Nitenpyram by Sawdust Biochar: Mechanism and Theoretical Simulation

“…Ma et al 20 synthesized a novel ball-milled acetic acid comodified sludge biochar and applied electrochemistry to enhance its activation, facilitating the degradation of neonicotinoid insecticides at environmental concentrations with removal rates of thiacloprid, thiamethoxam, and clothianidin at 96.6, 96.5, and 82.6%, respectively. Additionally, Zhang et al 21 prepared a series of doped biochars from rice husks (RH) and chicken manure (CM), demonstrating high performance, low cost, environmental friendliness, and recyclability for the removal of organophosphorus pesticides from farmland wastewater. Specifically, the 3RH + 1CM combination yielded the highest dimethoate removal rate (89.18%) and maximum adsorption capacity (3.57 mg/g).…”

Hydrothermal Carbonization vs. Pyrolysis: Effect on the Porosity of the Activated Carbon Materials

“…The graphene planes of such carbons are randomly oriented so there is no preferred direction of layer formation. Many published works on the adsorption of rare earth metals [5,6], the removal of pollutants from aqueous media [7,8], as well as the use of supercapacitor electrodes [9,10] and catalysts in fuel cells as electrodes [11][12][13][14] testify to the diverse directions of the use of activated carbons.…”