Cuttlefish ink loaded polyamidoxime adsorbent with excellent photothermal conversion and antibacterial activity for highly efficient uranium capture from natural seawater

Regulating the preparation of antibacterial poly(amidoxime) for efficient uranium extraction from seawater

“…5B), reaching equilibrium within 8 h. The adsorption kinetics were analyzed by pseudo-first-order ( q t = q e × (1 − exp(− k 1 t )), where q e and q t (mg g −1 ) are the adsorbed amounts of U( vi ) at equilibrium time and time t (h), respectively, and k 1 t (1 h −1 ) is the pseudo-first-order kinetic constant) and pseudo-second-order ( q t = q e × t /(1/( K ′ × q e ) + t ), where K ′ (g (mg h) −1 ) is the pseudo-second-order kinetic constant) models. 36,37 The relevant these parameters coefficients are generalized in Table S4 †. The adsorption process of U( vi ) by K 2 FeO 4 @PAO and PAO conformed to the pseudo-second-order model and chemisorption was the primary adsorption mode for U( vi ) adsorption on K 2 FeO 4 @PAO and on PAO.…”

“…(q t = q e × t/(1/(K′ × q e ) + t ), where K′ (g (mg h) −1 ) is the pseudosecond-order kinetic constant) models. 36,37 The relevant these parameters coefficients are generalized in Table S4. † The adsorption process of U(VI) by K 2 FeO 4 @PAO and PAO conformed to the pseudo-second-order model and chemisorption was the primary adsorption mode for U(VI) adsorption on K 2 FeO 4 @PAO and on PAO.…”

Uranium extraction from seawater: material design, emerging technologies and marine engineering

“…Incorporation of antimicrobial components that can actively kill the bacteria stained on the surface of the material, or inhibit the growth, reproduction and survival of bacteria into adsorbents is a common strategy for biofouling control, which is often referred to as an “attacking” strategy. In this regard, various antibacterial materials such as inorganic metal nanoparticles, 204–209 antibacterial antibiotics, 210 antimicrobial polymers, 127,128,140,211–222 natural biological entities, 183,223–226 antimicrobial enzymes 227 and photo-responsive antibacterial materials 228–235 have been introduced into uranium adsorbents to endow them with inherent antibacterial properties.…”

“…In addition to their photocatalytic effects, the photothermal and photoelectric effects of semiconductor materials under light stimulation have also been exploited for constructing adsorbents with high uranium extraction capacity and antibiofouling properties. 232–234 A black phosphorus (BP) nanosheet-loaded PAO adsorbent (labeled BP-PAO) was recently reported. 232 With the ability to produce biotoxic ROS induced by the photocatalytic effect, the as-prepared BP-PAO displayed high antibiofouling activity by destroying the organic components of the microbial species.…”

“…Overall, harnessing the photocatalytic and photoelectronic activities of materials is promising to mitigate biofouling while promoting adsorption performances in UES. 233,234…”