The Data Set of Photocatalytic Mineralization of Low Concentration Phenol Facilitated by Transfer of Positive and Negative Charges Correlation

Figure 1a-c (a) Schematic diagram for ring–opening and mineralization of phenol. (b) The basic process of photocatalytic reaction and its timescale.(c) Strong correlation between positive and negative charges.Figure 2 (a) XRD patterns (Bruker D8 ADVANCE A25), (b) UV–vis absorption spectra (Shimadzu UV–3600), (c–d) SEM images of Al-TiO2 and TiO2 (JEOL JSM–7900F). (e) the high angle annular dark field image and elemental mappings of Al-TiO2 (JEOL JEM–F200).Figure 3 (a) Al 2p XPS spectrum of Al-TiO2. (b) Ti 2p and (c) O 1s XPS spectra of Al-TiO2 and TiO2. (d) Work function, (e) binding energy, and (f) the band alignment can be obtained from UPS spectra of Al-TiO2 and TiO2 (Thermo Scientific Escalab 250Xi).Figure 4 The RRDE behaviors of TiO2 and Al-TiO2. In this electrode configuration, the disk and ring currents respectively reflect the generation and capture of •OH (CHI760E).Figure 5 The generation rate of DHBA over Al-TiO2 and TiO2 dispersed in salicylic acid solution under irradiation. The generation rate of •OH can be evaluated from the generated DHBA with consideration of the capture ratio (HPLC, Hitachi Chromaster). Figure 6 The voltammetry of Al-TiO2 and TiO2 electrodes in (a) water oxidation and (b) oxygen reduction reaction. For the oxygen reduction reaction, the measurements were conducted when the rotating disk electrode was rotating at a speed of 1600 r/min (CHI760E).Figure 7 (a) OCP behaviors of Al-TiO2, TiO2, Pt/Al-TiO2, and Pt/TiO2 electrodes in argon bubbled PBS solution. The time constants including (b) τOCP(–dual) and (c) τSC can be obtained from the OCP curves. (d) Schematic diagram shows that the downshift of conduction band lowers the potential barrier for SC interfacial electron transfer (CHI760E).Figure 8 (a) OCP behaviors, of Al-TiO2, TiO2, Pt/Al-TiO2, and Pt/TiO2 in oxygen bubbled PBS solution. The time constants such as (b) τOCP(–dual) and (c) τSC can be obtained from the OCP decay (CHI760E).Figure 9 (a) The photocurrent density of TiO2 photochemical system under different potential. (b) The generation of •OH and the number of collected photogenerated electrons (CHI760E and HPLC, Hitachi Chromaster).Figure 10 (a) Schematic diagram for fixed bed reactor of photocatalytic phenol mineralization. (b) Comparison of Pt/Al-TiO2 reaction rate between fixed bed and slurry suspension. (c) The photocatalytic mineralization of phenol over Al-TiO2, TiO2, Pt/Al-TiO2, and Pt/TiO2 photocatalysts (Photocatalytic fixed bed reactor).The specific experimental parameters and operation process can be referred to the content of this paper.