Covalent Organic Framework Decorated TiO2 Nanotube Arrays for Photoelectrochemical Cathodic Protection of Steel

Ion‐Exchange Synthesis of ZnO/ZnSe/CdSe Core/Shell Heterostructured Nanowire Photoanodes toward High‐Performance Photocathodic Protection of 304 Stainless Steel

“…Construction of heterostructured semiconductor systems with well-matched band energies offers new opportunities to enhance spatial charge separations and ultimately boost photoelectrochemical properties. [8] Recently, various narrow bandgap semiconductors capable of absorbing visible light of solar spectrum have been composited with TiO 2 and ZnO to form heterojunctions for improving PCP performances, such as In 2 S 3 , [4] CdS, [9] Bi 2 S 3, [10] Sb 2 S 3 , [11] ZnIn 2 S 4 , [12] AgInSe 2 , [13] BiVO 4 , [14] TpBD-COF, [15] MoS 2 , [16] FeS 2 , [17] etc. In the meanwhile, geometric advantages of nanowire arrays over planar films have been demonstrated in the photoelectrochemical fields.…”

“…In Figure 9, all the Nyquist plots consist of an impedance arc in the high-frequency region and a slope in the mid-frequency region. [14][15] Usually, the smaller the radius of the arc, the lower the impedance. It is clear that the ZnO/ZnSe/ CdSe photoanode shows a considerably reduced impedance.…”

Highly selective enrichment of Au using enaminone covalent organic polymers (COP)

“…15,20 There is a C]O tensile vibration peak at 1624 cm À1 . 21,22 There is C]C tensile vibration at 1481.49 cm À1 . There is a C-N tensile vibration peak at 1270.92 cm À1 .…”

“…The peak at 1270.92 cm À1 is connected to the tensile vibration of C-N bond, meaning that the C-N bond remains in the material. 21 The valence states of adsorbed substances are analyzed by photoelectron spectroscopy. The measured XPS spectrum (Fig.…”

Covalent Organic Framework Composites: Synthesis and Analytical Applications

“…Titanium is a metal with high corrosion resistance and high stability, and easy surface modification and high chemical activity [ 46 ]. The surface of titanium can be modified via anodization to titanium dioxide, TiO 2 , nanotubes, which have provoked widespread interest due to their long-term chemical stability, low cost, facile synthesis, and relative non-toxicity [ 47 ]. TpBD COF was covalently bonded on titanium wire via titanium dioxide nanotube arrays and used for solid-phase microextraction of phthalates in vegetables [ 46 ].…”