BET surface area CO2 electroreduction Carbopol EDX FTIR MDA-MB 231cell line PCM PV RLC model SEM Si-NWs TES TGA Technology: general issues ZnO nanoparticles adsorbents adsorption aluminum matrix composites antibacterial activity anticancer activity biomedical fields blend calcium fluoride powder carbon long fibers carbon-fibres catalysts chemical precipitation chemical vapor deposition (CVD) chemotherapeutic drugs compressive strength