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huanglijing木蟲 (正式寫手)
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[求助]
如何確定光催化劑的零電荷點(diǎn)
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（本人做光催化降解RhB 和TC，最近有一審稿意見(jiàn)，-- to discuss the adsorption capacities of RhB and TC at the surface of the BOB photocatalyst, the point of zero charge of the photocatalyst should be determined and the pH of the RhB and TC solutions indicated.）譯文：為了探討RhB和TC在BOB光催化劑表面的吸附能力，需要確定光催化劑的零電荷點(diǎn)，并指出RhB和TC溶液的pH值。 為了確定光催化劑的零電荷點(diǎn)，我找了下面文獻(xiàn)的Fig. 6(d) The point of zero charge (pHpzc) for NCDs-BC-1was around 3.43 in Fig. 6(d), suggesting the NCDs-BC-1 surface was positively charged at pH < pHpzc and negatively charged at pH >pHpzc. With low pH (< 3.43), the surface charges of catalyst were slightly positive, which was facilitated for the attraction of electron-rich aromatic nucleus or the oxygens of CBZ molecular [35]. Besides, the moiety of –CONH2 in CBZ molecule was more susceptible to be decomposed in the acid solution [11]. In alkaline conditions, the CO2 from the air and degradation process would be transformed into bicarbonate ions, which might compete with CBZ for reactive species, thus the photocatalytic degradation was restrained [36]. 請(qǐng)問(wèn)各位做光催化降解的同行，這個(gè) Fig. 6(d)d圖 ， 橫坐標(biāo)是pH 值，縱坐標(biāo)是zeta 點(diǎn)位，中間有光催化劑的零電荷點(diǎn)，應(yīng)該怎么做這個(gè)實(shí)驗(yàn)，有同行研究過(guò)嗎？急求，多謝！�。� QQ圖片20210324221824.png |
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2樓2021-03-25 09:16:33
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3樓2021-03-25 18:17:46
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