Novel Ag-AgBr decorated composite membrane for dye rejection and photodegradation under visible light

The permeation and Separation Characteristics of Polymeric Membranes Incorporated with Nanoparticles for Dye Removal and Interaction Mechanisms between Polymer and Nanoparticles: A Mini Review

“…In addition, two other dyes (CR and RB) were used to further analyze the performance of the membranes containing nanoparticles. The dye rejection of the PAN-ETA/CS-TiO2/Ag-AgBr membranes was relatively high, at around 95% for congo red and 99.98% for rose bengal [43]. Yu et al successfully synthesized Ag-SiO2 nanocomposites.…”

Prospects of Synthesized Magnetic TiO2-Based Membranes for Wastewater Treatment: A Review

“…Polymer membranes are one of the most popular membranes used in wastewater treatment and water purification (Table 4). Polymers reported as support membranes of photocatalysts include polyamide, polyvinylidene fluoride (PVDF) [23], polyethersulfone (PES), poly (vinylidene fluoride) (PVDF) [24], sulfonated polyethersulfone (SPES), poly (vinylidene fluoride) [105][106][107][108], polyurethane (PU) [98], polyethylene terephthalate (PET) [82], polyester [58], polyacrylonitrile (PAN) [43] and polytetrafluoroethylene (PTFE) [109][110][111][112][113][114]. Polymer-inorganic nanoparticle composite membranes can be divided into two groups based on their structure: (a) polymer and inorganic phases linked by covalent bonds, and (b) polymer and inorganic phases linked by van der Waals forces or hydrogen bonds [113].…”

Crystal design of bismuth oxyiodide with highly exposed (110) facets on curved carbon nitride for the photocatalytic degradation of pollutants in wastewater

“…OTC P0 (m/z = 461.1) and intermediate P1 (m/z = 475.1) on the benzene ring of N-C bonds were easily attacked by free radicals and electron holes to form P4 (m/z = 448.1), which was transformed into P7 (m/z = 362.3) via superoxide radicals through the loss of groups and deamidation [42]. Meanwhile, OTC lost ammonia and was converted into P2 (m/z = 445.1) [3,43], and into intermediate P5 (m/z = 432.2) by removing the N-methyl amino group of OTC. This reaction led to the generation of P8 (m/z = 340.2) by further decarbonylation, dehydration, and dehydroxylation [3].…”

“…Meanwhile, OTC lost ammonia and was converted into P2 (m/z = 445.1) [3,43], and into intermediate P5 (m/z = 432.2) by removing the N-methyl amino group of OTC. This reaction led to the generation of P8 (m/z = 340.2) by further decarbonylation, dehydration, and dehydroxylation [3]. Dehydration was shown to be a reaction that removed H 2 O from the ring structure of OTC and readily occurred on the saturation ring by reacting with the hydroxyl group to form the intermediate P3 (m/z = 441.3) [44].…”

“…Currently, the industrial development of antibiotics and organic dyes has caused serious environmental pollution, especially serious water pollution, which has become an urgent problem to be solved [1]. Oxytetracycline (OTC) is difficult to remove from the environment due to its chemical stability and long half-life, which may lead to an imbalance in the microbial community, other ecological toxic effects and adverse effects on the ecosystem [2,3]. Meanwhile, the methyl blue (MB) in organic dyes are widely used, and have a complex composition, high toxicity, great hazards potential and poor degradability, resulting in difficulty in water purification [4,5].…”