Dense and uniform growth of TiO2 nanoparticles on the pomelo-peel-derived biochar surface for efficient photocatalytic antibiotic degradation

Improvement of the Surface Properties of Polyether Ether Ketone via Arc Evaporation for Biomedical Applications

“…In both cases, the O/C ratio is 0.19, which is close to the value of 0.16 indicated in the literature [30]. Moreover, the Ti2p spectra (Figure 4, upper row) of the surface-modified samples show peaks characteristic of titanium with the oxidation state of +4, Ti2p3/2 (459.4 eV), and Ti2p1/2 (465.0 eV), with a distance between them of about 5.6 eV [31]. These peaks are not present in the XPS spectra of the unmodified samples (Figure 4, top row).…”

“…The O1s spectra for oxygen of all surface-modified samples (Figure 4, lower row) show a peak at 530.7 eV, which corresponds to Ti-O bonds [32]. For unmodified PEEK and 3D-PEEK samples, there are peaks characteristic of PEEK at 533.1 eV and 531.0 eV, corresponding to O-C and Moreover, the Ti2p spectra (Figure 4, upper row) of the surface-modified samples show peaks characteristic of titanium with the oxidation state of +4, Ti2p 3/2 (459.4 eV), and Ti2p 1/2 (465.0 eV), with a distance between them of about 5.6 eV [31]. These peaks are not present in the XPS spectra of the unmodified samples (Figure 4, top row).…”

Tuning and Sustainment of High Surface Area of Nano CeO2-Anchored NiMOF Flake Heterojunctions for Efficient Photocatalytic Hydrogen Generation

“…Increasing CeO 2 beyond the optimum level, as in 0.5:1-CeO 2 @NiMOF, causes an acceleration in the rate of electron–hole recombinations. It might be due to the self-aggregation of CeO 2 in NiMOF surfaces as seen from FESEM under higher loading ratios or due to the weaker interfacial effects …”

“…It might be due to the selfaggregation of CeO 2 in NiMOF surfaces as seen from FESEM under higher loading ratios or due to the weaker interfacial effects. 53 The average lifetime of the photogenerated charge carriers in the as-tuned 0.2:1-CeO 2 @NiMOF heterojunction photocatalyst is an essential parameter to be measured for determining its ability for proton reduction. Accordingly, TRPL studies are carried out for the 0.2:1-CeO 2 @NiMOF photocatalyst along with the bare NiMOF using a multi- S5.…”

Understanding the active sites and associated reaction pathways of metal-free carbocatalysts in persulfate activation and pollutant degradation

“…The increasing environmental pollution with the fast development of various industries calls for efficient and lowcost methods to remove the toxic and refractory pollutants from water radically. [1][2][3][4] The current methods involve adsorption, [5][6][7] Fenton oxidation, 8,9 Fenton-like oxidation, 10,11 electro-Fenton, 12,13 photo-Fenton, 14,15 electrochemical oxidation, 16,17 photocatalysis [18][19][20][21] and others. [22][23][24][25][26] Among these methods, Fenton-like oxidation based on peroxomonosulfate (PMS) and peroxydisulfate (PDS) has attracted significant attention due to its long life spans, strong oxidation ability, ease of storing and transporting PMS/PDS relative to liquid H 2 O 2 , applicability to a diversity of refractory organic pollutants, and capability to withstand a wide pH range, which is superior to the Fenton process requiring H 2 O 2 as the reactant, thus causing the storage and delivery to be difficult.…”