New functional β-chitin/calcium phosphate as promising support of copper nanocatalyst for the reductive degradation of methylene blue

Mechanochemical Transformations of Biomass into Functional Materials

“…[254] Indeed, β-chitin in this system was shown to improve structural stability, provide the anti-agglomeration ability and enable superior nanoparticle stability. [254] Based on the overall improvement in performance of the Cu(NPs) as a catalyst for the degradation of MB, the authors also concluded that there is potential for the hybrid chitin/DCPA materials to support other metal nanoparticle catalysts towards efficient organic dyes degradation. [254] The general idea of using chitin/chitosan to form composite materials via mechanochemical approaches has also been explored by other researchers.…”

“…[254] Based on the overall improvement in performance of the Cu(NPs) as a catalyst for the degradation of MB, the authors also concluded that there is potential for the hybrid chitin/DCPA materials to support other metal nanoparticle catalysts towards efficient organic dyes degradation. [254] The general idea of using chitin/chitosan to form composite materials via mechanochemical approaches has also been explored by other researchers.…”

“…[247] The result showed that 20 % w/w potassium persulfate produced an oxidized chitosan-based adsorbent that has the best adsorbing properties due to the chitosan depolymerization, which leads to stronger electrostatic interaction with penicillin G. [247] Biological ceramics including calcium phosphate bioceramics with nanostructure and morphologies raised from naturally abundant raw materials have shown unique properties in various applications in which the potential uses in medical technologies and catalysis are some of the most appealing ones to both academia and industry. [250][251][252][253] Mulongo-Masamba et al [249,254] presented two studies on the applications of a hybrid β-chitin/dicalcium phosphate anhydrous (DCPA) they prepared via a mechanochemical approach from cuttlebone fish and phosphoric acid. [255] The mechanochemical interaction employed in the synthesis of the β-chitin/DCPA based composite was stirring.…”

“… [249] The study concluded that the β‐chitin/DCPA matrix effectively enhanced the dispersibility of the Cu(NPs), while chitin protected the copper against oxidation to retain its antibacterial properties [249] . In another study, the mechanochemically synthesized Cu(NPs)/β‐chitin/DCPA composite showed higher catalytic efficiency and recyclability on the reduction of methylene blue (MB), as compared to a simple Cu(NPs)/DCPA composite or unsupported Cu(NPs) [254] . Indeed, β‐chitin in this system was shown to improve structural stability, provide the anti‐agglomeration ability and enable superior nanoparticle stability [254] .…”

Chitin and Chitosan Derivatives as Biomaterial Resources for Biological and Biomedical Applications

“…In contrast to α-chitin, β-chitin is mostly found in squid pen. β-chitin has been also applied for biomaterial usage such as wound healing [ 14 , 15 ], preservative agents for methylene blue [ 16 ], and biological application such as an enhancer of saltiness perception [ 17 ]. γ-chitin has been gathered from cocoon of the moth ( Orgyia dubia ), and it is found that the structure of γ-chitin is similar to α-chitin rather than β-chitin, but the surface morphology of γ-chitin is consisted of microfibers, whereas α-chitin and β-chitin are composed of nanofibers [ 18 ].…”