Abstract The effects of the aqueous extract of Acacia nilotica and Cuminum cyminum for the control of the brown garden snail "Eobania vermiculata" and the clover land snail "Monacha obstructa" were studied under laboratory conditions. The highest mortality rates were recorded at 25% concentration of Acacia nilotica for both species, 23% and 20% of Cuminum cyminum concentration for the two species, respectively. The extract of Acacia nilotica caused the appearance of black material on the snail shell. The treated snails showed histological alterations in the digestive and salivary glands. The digestive cells were shrunken or completely degenerated. The lumen of the digestive tubules increased in width and filled with secretory materials. Mucocytes of the salivary gland showed great destruction.

Abstract The effects of the aqueous extract of Acacia nilotica and Cuminum cyminum for the control of the brown garden snail "Eobania vermiculata" and the clover land snail "Monacha obstructa" were studied under laboratory conditions. The highest mortality rates were recorded at 25% concentration of Acacia nilotica for both species, 23% and 20% of Cuminum cyminum concentration for the two species, respectively. The extract of Acacia nilotica caused the appearance of black material on the snail shell. The treated snails showed histological alterations in the digestive and salivary glands. The digestive cells were shrunken or completely degenerated. The lumen of the digestive tubules increased in width and filled with secretory materials. Mucocytes of the salivary gland showed great destruction.

In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

In this study we synthesized two tetraphenyl-p-phenylenediamine-based covalent organic frameworks (TPPDA-TPPyr and TPPDA-TPTPE COFs) for potential use in high-performance electrochemical supercapacitors. This excellent performance arose from their structures containing redox-active triphenylamine derivatives and their high surface areas.

Nanostructured Co3O4-graphene hybrid catalysts are fabricated by a one-step vacuum kinetic spray technique from microparticles of Co3O4 and graphite powders. The Co3O4-graphene hybrid catalysts with various Co3O4 contents are studied concerning the oxygen evolution reaction (OER), and hydrogen evolution reaction (HER) in 1.0 M KOH, as well as, H2O2 sensing in 0.1 M NaOH. We find that increasing graphene content in the hybrid catalysts results in an overall improvement of the OER electrocatalytic activity due to the enhancement in the charge transfer kinetics. The hybrid catalyst with 25 wt% Co3O4 reveals the optimum electrocatalytic activity toward the OER with the lowest overpotential (η) of 283 mV@ 10 mA cm−2 and superior reaction kinetics with a low Tafel slope of 25 mV.dec−1. Besides, the OER stability at 50 mA cm−2 for 50 h in 1.0 M KOH was verified. The hybrid catalyst with 50 wt% Co3O4 revealed the highest activity toward the HER with η of 108 mV@ 10 mA cm−2, Tafel slope of 90 mV.dec−1, and stability at 50 mA cm−2 for nearly 30 h. Moreover, it reveals ultrahigh H2O2 amperometric detection with superior sensitivity of 18,110 μA mM−1 cm−2, linear detection range from 20 μM to 1 mM, and a limit of detection of 0.14 μM.

We successfully synthesized two different kinds of hyper-crosslinked porous organic polymers (CPOPs) based on tetraphenylanthraquinone units by a reaction of 9,10-bis(diphenylmethylene)- 9,10-dihydroanthracene (An-4Ph) as the building unit with formaldehyde dimethyl acetal and 2,4,6-trichloro-1,3,5-triazine as two external crosslinkers by using a simple and friendly one-step Friedel−Crafts polymerization in the presence anhydrous FeCl3 as a catalyst to afford An-CPOP-1 and An-CPOP-2 as a black solid with high yield, respectively. Fourier-transform infrared (FTIR) and NMR spectroscopy were confirmed the chemical structures of the synthesized monomers and the corresponding polymers. Both An-CPOP-1 and An-CPOP-2 showed amorphous character, outstanding thermal stability, and high BET surface area (up to 1000 m2/g) with microporosity and mesoporosity architectures based on XRD, TGA analyses and N2 adsorption/desorption measurements. Interestingly, TEM and SEM images revealed that An-CPOP-1 had regular tubular nanotubes structure without using template or surfactant or carbonization at the elevated temperature. The as-prepared An-CPOP-2 exhibited a high specific capacitance of 98.4 F g−1 at a current density of 0.5 A g−1 and excellent cycling stability (95.3% capacitance retention over 2000 cycles), which could be used as good material for energy storage application.

We successfully synthesized two different kinds of hyper-crosslinked porous organic polymers (CPOPs) based on tetraphenylanthraquinone units by a reaction of 9,10-bis(diphenylmethylene)- 9,10-dihydroanthracene (An-4Ph) as the building unit with formaldehyde dimethyl acetal and 2,4,6-trichloro-1,3,5-triazine as two external crosslinkers by using a simple and friendly one-step Friedel−Crafts polymerization in the presence anhydrous FeCl3 as a catalyst to afford An-CPOP-1 and An-CPOP-2 as a black solid with high yield, respectively. Fourier-transform infrared (FTIR) and NMR spectroscopy were confirmed the chemical structures of the synthesized monomers and the corresponding polymers. Both An-CPOP-1 and An-CPOP-2 showed amorphous character, outstanding thermal stability, and high BET surface area (up to 1000 m2/g) with microporosity and mesoporosity architectures based on XRD, TGA analyses and N2 adsorption/desorption measurements. Interestingly, TEM and SEM images revealed that An-CPOP-1 had regular tubular nanotubes structure without using template or surfactant or carbonization at the elevated temperature. The as-prepared An-CPOP-2 exhibited a high specific capacitance of 98.4 F g−1 at a current density of 0.5 A g−1 and excellent cycling stability (95.3% capacitance retention over 2000 cycles), which could be used as good material for energy storage application.

We successfully synthesized two different kinds of hyper-crosslinked porous organic polymers (CPOPs) based on tetraphenylanthraquinone units by a reaction of 9,10-bis(diphenylmethylene)- 9,10-dihydroanthracene (An-4Ph) as the building unit with formaldehyde dimethyl acetal and 2,4,6-trichloro-1,3,5-triazine as two external crosslinkers by using a simple and friendly one-step Friedel−Crafts polymerization in the presence anhydrous FeCl3 as a catalyst to afford An-CPOP-1 and An-CPOP-2 as a black solid with high yield, respectively. Fourier-transform infrared (FTIR) and NMR spectroscopy were confirmed the chemical structures of the synthesized monomers and the corresponding polymers. Both An-CPOP-1 and An-CPOP-2 showed amorphous character, outstanding thermal stability, and high BET surface area (up to 1000 m2/g) with microporosity and mesoporosity architectures based on XRD, TGA analyses and N2 adsorption/desorption measurements. Interestingly, TEM and SEM images revealed that An-CPOP-1 had regular tubular nanotubes structure without using template or surfactant or carbonization at the elevated temperature. The as-prepared An-CPOP-2 exhibited a high specific capacitance of 98.4 F g−1 at a current density of 0.5 A g−1 and excellent cycling stability (95.3% capacitance retention over 2000 cycles), which could be used as good material for energy storage application.