Pechini sol-gel synthesis of Cu2O/Li3BO3 and CuO/Li3BO3 nanocomposites for visible light-driven photocatalytic degradation of dye pollutant

Facile One-Pot In Situ Synthesis and Characterization of a Cu2O/Cu2(PO4)(OH) Binary Heterojunction Nanocomposite for the Efficient Photocatalytic Degradation of Ciprofloxacin from Aqueous Solution under Direct Sunlight Irradiation

“…Dramatically, a visible light absorption peak of the Cu 2 O/Cu 2 (PO 4 )­(OH) heterojunction nanocomposite is stronger and broader than that of pure Cu 2 (PO 4 )­(OH) (Figure a). In addition, the light absorption intensity of the heterostructure was considerably boosted from 200 up to 1600 nm in the whole UV–vis–NIR domain, which can be ascribed to the excellent sensitization effect of Cu 2 O nanostructures and formation of the heterojunction interfaces in the nanocomposite. − These features lead to the very high photon absorption capacity of sunlight and outstanding separation and transportation of photogenerated charge carriers and subsequently superior photocatalytic degradation activity of the Cu 2 O/Cu 2 (PO 4 )­(OH) nanocomposite under direct sunlight illumination. Besides, the energy gap ( E g ) as an important factor in photocatalytic performance of the photocatalysts is calculated according to the following formula where α, h ν, and A are the absorption coefficient, photonic energy, and energy-independent constant, respectively.…”

Sol–Gel Ceramics for SEIRAS and SERS Substrates

“…Zirconia, titania, hydroxyapatite, and lithium niobate have also been obtained with the sol-gel method via the use of alkoxides (Table 1). Examples such as a zirconia membrane for the separation of hydrogen from a mixture of gases [32], zirconia-silver oxide nanoparticles for antibacterial applications [33], titania-polymer thin film composites for catalytic activity [34], titania thin films doped with zinc and nitrogen with bactericidal and photocatalytic activities [35], hydroxyapatite powder doped with silver nanoparticles with antimicrobial activity [36], bioactive poly-ε-caprolactone with alumina and hydroxyapatite composite fibers [37], lithium niobate thin films with optical properties [38], lithium niobate thin films with piezoelectric properties [39], and copper oxide-lithium niobate composites with photocatalytic activity for environmental purposes prepared through the Pechini method [40]. Examples of alumina prepared using alkoxides include the synthesis of γ-alumina using aluminum sec-butoxide [41], γ-alumina microspheres [42], alumina thin films on steel for corrosion protection using aluminum isopropoxide [43], and the use of aluminum triethoxide to improve the properties of a graphene oxide nanocomposite [44].…”

Facile synthesis and characterization of magnesium and manganese mixed oxides for the efficient removal of tartrazine dye from aqueous media

“…This method is straightforward, requires low-cost materials, and controls the morphology and crystallite size of nanoparticles. [33][34][35] This method succeeded in preparing many nanomaterials such as a-Fe 2 O 3 , CuO/Li 3 BO [36][37][38][39][40][41][42][43] However, the world needs more low-cost nanomaterials to get rid of the problem of water pollution. To achieve this goal, our research group has synthesized MgMn 2 O 4 /Mn 2 O 3 and MgMn 2 O 4 /Mn 2 O 3 /Mg 6 MnO 8 as novel nanostructures using the Pechini sol-gel method.…”