Feeding silkworms with HPMC dispersed MoO2 NPs: An efficient strategy to enhance the supercapacitance performance of carbonized silk

Synthesis and Processing of Nanomaterials Mediated by Living Organisms

“…While the mechanical improvements of the silk in these cases do not match those from carbon‐based NMs (Figure 3 c,d ), the actual benefits lie in the conferral of new properties such as a potent antibacterial effect[ 57 , 58 ] or the electricity harvesting from silk cocoons. [59] A similar trend is observed for feeding with metal oxide NPs, which in this case are mostly based on TiO 2 [ 44 , 60 , 61 ] but there are also specific examples with F 3 O 4 , [49] MoS 2 [61] or MoO 2 [ 62 , 63 ] NPs. For instance, the excellent UV‐absorbing ability of TiO 2 led to UV‐resistant silks, [44] the magnetic properties of F 3 O 4 provided intrinsically magnetic silk, [49] and MoO 2 NPs led to an enhancement of specific capacitance in carbonized silk.…”

“…[46,48,55] Another recurrent family of NMs fed to silkworms are metal and metal oxide NPs.R egarding ZMNPs,t he most investigated are Ag NPs, [56][57][58][59] but there are also reports on feeding with Cu [56,60] and Fe [60] NPs.While the mechanical improvements of the silk in these cases do not match those from carbon-based NMs (Figure 3c,d), the actual benefits lie in the conferral of new properties such as ap otent antibacterial effect [57,58] or the electricity harvesting from silk cocoons. [59] As imilar trend is observed for feeding with metal oxide NPs,which in this case are mostly based on TiO 2 [44,60,61] but there are also specific examples with F 3 O 4 , [49] MoS 2 [61] or MoO 2 [62,63] NPs.F or instance,t he excellent UV-absorbing ability of TiO 2 led to UV-resistant silks, [44] the magnetic properties of F 3 O 4 provided intrinsically magnetic silk, [49] and MoO 2 NPs led to an enhancement of specific capacitance in carbonized silk. [62,63] All the aforementioned breakthroughs are possible because NMs are actually incorporated into the silk by the action of silkworms.T his has been corroborated by some authors using specific characterization techniques.F or instance,CNTs and graphene have been detected within the silk Angewandte by Raman spectroscopy, [51,52] and metal NPs by ICP-MS and advanced electron microscopy techniques.…”

“…[59] As imilar trend is observed for feeding with metal oxide NPs,which in this case are mostly based on TiO 2 [44,60,61] but there are also specific examples with F 3 O 4 , [49] MoS 2 [61] or MoO 2 [62,63] NPs.F or instance,t he excellent UV-absorbing ability of TiO 2 led to UV-resistant silks, [44] the magnetic properties of F 3 O 4 provided intrinsically magnetic silk, [49] and MoO 2 NPs led to an enhancement of specific capacitance in carbonized silk. [62,63] All the aforementioned breakthroughs are possible because NMs are actually incorporated into the silk by the action of silkworms.T his has been corroborated by some authors using specific characterization techniques.F or instance,CNTs and graphene have been detected within the silk Angewandte by Raman spectroscopy, [51,52] and metal NPs by ICP-MS and advanced electron microscopy techniques. [58,60,62] However, most authors agree that most of the NMs fed to the silkworms are expelled in their excrement.…”

Synthesis and Processing of Nanomaterials Mediated by Living Organisms

“…[59] As imilar trend is observed for feeding with metal oxide NPs,which in this case are mostly based on TiO 2 [44,60,61] but there are also specific examples with F 3 O 4 , [49] MoS 2 [61] or MoO 2 [62,63] NPs.F or instance,t he excellent UV-absorbing ability of TiO 2 led to UV-resistant silks, [44] the magnetic properties of F 3 O 4 provided intrinsically magnetic silk, [49] and MoO 2 NPs led to an enhancement of specific capacitance in carbonized silk. [62,63] All the aforementioned breakthroughs are possible because NMs are actually incorporated into the silk by the action of silkworms.T his has been corroborated by some authors using specific characterization techniques.F or instance,CNTs and graphene have been detected within the silk by Raman spectroscopy, [51,52] and metal NPs by ICP-MS and advanced electron microscopy techniques. [58,60,62] However, most authors agree that most of the NMs fed to the silkworms are expelled in their excrement.…”

“…[46,48,55] Another recurrent family of NMs fed to silkworms are metal and metal oxide NPs.R egarding ZMNPs,t he most investigated are Ag NPs, [56][57][58][59] but there are also reports on feeding with Cu [56,60] and Fe [60] NPs.While the mechanical improvements of the silk in these cases do not match those from carbon-based NMs (Figure 3c,d), the actual benefits lie in the conferral of new properties such as ap otent antibacterial effect [57,58] or the electricity harvesting from silk cocoons. [59] As imilar trend is observed for feeding with metal oxide NPs,which in this case are mostly based on TiO 2 [44,60,61] but there are also specific examples with F 3 O 4 , [49] MoS 2 [61] or MoO 2 [62,63] NPs.F or instance,t he excellent UV-absorbing ability of TiO 2 led to UV-resistant silks, [44] the magnetic properties of F 3 O 4 provided intrinsically magnetic silk, [49] and MoO 2 NPs led to an enhancement of specific capacitance in carbonized silk. [62,63] All the aforementioned breakthroughs are possible because NMs are actually incorporated into the silk by the action of silkworms.T his has been corroborated by some authors using specific characterization techniques.F or instance,CNTs and graphene have been detected within the silk by Raman spectroscopy, [51,52] and metal NPs by ICP-MS and advanced electron microscopy techniques.…”