Photocatalytic NO removal over defective Bi/BiOBr nanoflowers: The inhibition of toxic NO2 intermediate via high humidity

Efficient photocatalytic NO oxidation over novel NiAl layered double hydroxide/Bi4Ti3O12 Z-scheme heterojunctions with boosted charge separation and O2 activation

“…Based on the experimental results mentioned above, it can be concluded that the BTO-NAL heterojunction can significantly enhance the performance of photocatalytic NO oxidation, and the photocatalytic oxidation pathway of NO → NO 2 /NO 2 − → NO 3 − can be deduced accordingly. 43,44…”

“…Through a series of oxidation–reduction reactions, NO molecules are transformed into NO 3 − by the attack of active substances such as ·O 2 − , h + , and ·OH, achieving thorough oxidation of toxic NO and a decrease in toxicity. 44,48 The reaction pathway of NO oxidation can be illustrated in detail by using the following equations: 10,14 NiAl-LDH + hv = e − (NiAl-LDH) + h + (NiAl-LDH)Bi 4 Ti 3 O 12 + hv = e − (Bi 4 Ti 3 O 12 ) + h + (Bi 4 Ti 3 O 12 )e − (NiAl-LDH) + O 2 = ˙O 2 − h + (Bi 4 Ti 3 O 12 ) + H 2 O = ˙OH + H + NO + O 2 = NO 2 → N 2 O 4 NO + ˙O − 2 = NO − 3 NO +˙OH = NO 2 + H 2 ONO 2 /N 2 O 4 +˙OH = NO 3 − + H + NO 2 /N 2 O 4 + ˙O 2 − = NO 3 − + O 2 H 2 O + NO + h + = NO − 2 + 2h + 2NO − 2 + h + + ˙O 2 − = 2NO − 3 …”

“…Based on the experimental results mentioned above, it can be concluded that the BTO-NAL heterojunction can signicantly enhance the performance of photocatalytic NO oxidation, and the photocatalytic oxidation pathway of NO / NO 2 /NO 2 − / NO 3 − can be deduced accordingly. 43,44 Photoelectrochemical measurements were utilized to determine the efficiency of interfacial charge separation and transfer between Bi 4 Ti 3 O 12 and NiAl-LDH. As shown in Fig.…”

“…9c and d and $OH, achieving thorough oxidation of toxic NO and a decrease in toxicity. 44,48 The reaction pathway of NO oxidation can be illustrated in detail by using the following equations: 10,14 NiAl-LDH + hv = e − (NiAl-LDH) + h + (NiAl-LDH) production of active oxygen species under light irradiation, thereby enhancing the photocatalytic activity of NO removal.…”

Spectrophotometric and Spectrofluorimetric Quantification of Urea via Silver Nanoparticles Prepared by Wet Chemical Method

“…Ag NPs are made by reducing silver salt using a variety of processes, including chemical, biogenic, photo-reduction, thermal and radiation [7][8][9][10]. These silver nanomaterials are used as a research tool in various sectors, like photodegradation of environmental pollutants, photocatalysts for removing hazardous substances, especially dyes, gases and biomedical wastes, cancer cells treatment and removal of heavy metals from water bodies [11][12][13][14][15]. Moreover, Ag NPs are utilized in biosensing to assess several chemical substances in environmental, laboratorial, and clinical serums [16][17][18].…”