MoS2 nanoflowers decorated natural fiber-derived hollow carbon microtubes for boosting perfluorooctanoic acid degradation

A self-synthesised non-homogeneous MoS2/Fe–Co–N–BC composite catalyst as an activator for peroxomonosulfate activation for efficient degradation of perfluorooctanoic acid

“…The sample was then washed three times with ultrapure water and the resulting precipitate was dried under vacuum at 60 °C overnight. 18,19…”

“…The sample was then washed three times with ultrapure water and the resulting precipitate was dried under vacuum at 60 1C overnight. 18,19 The obtained nanosheet-structured MoS 2 powder, 3.0 g of FeSO 4 Á7H 2 O, 3.0 g of urea (nitrogen source), 4.5 g of cobalt nitrate hexahydrate, and ascorbic acid (reducing agent, the molar ratio of ascorbic acid to iron salt was 2 : 1) were dissolved in 50 mL of water. Then, 3 g of wood chips in a 1 : 1 ratio of urea were thoroughly mixed and the mixture was transferred to a Teflon lined autoclave and sealed with 50 mL of distilled water and placed in a vacuum oven and heated to 160 1C for 10 h. The material was dried at 80 1C for 24 h. The dried wood chips were placed in a quartz boat and placed in the thermostat section of a tube furnace and heated from room temperature to the target temperature of 800 1C (heating rate of 10 1C min À1 and nitrogen conditions) to obtain MoS 2 , Fe, Co and N co-doped biochar (MoS 2 /Fe-Co-N-BC).…”

Advanced Polymeric Nanocomposite Membranes for Water and Wastewater Treatment: A Comprehensive Review

“…These membranes target emerging contaminants in the form of toxic molecules or ions in purified drinking water and wastewater. For example, several polymer nanocomposite studies have been conducted using different NPs such as silica NPs [ 367 ], nanoscale zero-valent iron [ 368 ], poly(piperazineamide) [ 369 ], selective polyamide layer [ 370 ], montmorillonite [ 371 ], nano-sized MoS 2 [ 372 ], GO [ 373 ], MWCNT [ 374 ], cellulose [ 324 ], etc., to achieve the efficient removal of PFAS, one of the proposed emerging contaminants by the US EPA. In addition to removing pollutants, the merits of integrating NPs in membrane filtration technologies includes the addition of structural and chemical properties such as chemical and thermal stability, antifouling, addition of surface charge, mechanical strength, enhanced hydrophilicity, porosity, tunable pore size and permeability, among others [ 215 , 375 , 376 ].…”