李高仁，童葉翔，劉冠昆，徐常威

中山大學(xué)化學(xué)學(xué)院，廣州 510275

作者希望對(duì)2002年發(fā)表的論文1進(jìn)行一下更正。原論文中的圖1和圖2使用有誤，正確的圖1和圖2如下圖所示。

原論文中結(jié)果與討論2.1部分中的第一段修改如下：

鉑(Pt)電極在0.1 mol·L-1LiClO4-DMSO溶液中的循環(huán)伏安曲線如圖1 (1)所示，該圖顯示其電化學(xué)窗口為4.77 V，陽極極限電勢(shì)為1.37 V，陰極極限電勢(shì)為-3.40 V。在掃描速度60 mV·s-1時(shí)，Pt電極在0.01 mol·L-1ErCl3+ 0.1 mol·L-1LiClO4-DMSO溶液中的循環(huán)伏安曲線如圖1 (2)所示，該圖中陰極還原峰的峰電勢(shì)為2.11 V。該陰極還原峰相應(yīng)于Er(III)的還原。Pt電極在不同掃描速率υ下在0.01 mol·L-1ErCl3+ 0.1 mol·L-1LiClO4-DMSO溶液中的循環(huán)伏安曲線如圖2所示，根據(jù)其峰電勢(shì)Ep–lnυ線性關(guān)系，可顯示Er(III)在Pt電極上的電還原為一步完全不可逆反應(yīng)。

The authors wish to make the following correction to our published paper1. Figures 1 and 2 in the original paper are used incorrectly. The correct Figures 1 and 2 are shown in the following figure.

In the results of the original paper the first paragraph in Part 2.1 are revised as follows:

The cyclic voltammetry curve of platinum (Pt) electrode in 0.1 mol·L-1LiClO4-DMSO solution is shown in Fig.1 (1). The figure shows that the electrochemical window is 4.77 V, the anode limit potential is 1.37 V and the cathode limit potential is -3.40 V. The cyclic voltammetric curves of Pt electrodes in 0.01 mol·L-1ErCl3+ 0.1 mol·L-1LiClO4-DMSO solution at the scan rate of 60 mV·S-1are shown in Fig. 1 (2). The peak potential of the cathodic reduction peak in this figure is 2.11 V. The cathodic reduction peak corresponds to the reduction of Er(III).The cyclic voltammetric curves of Pt electrodes in 0.01 mol·L-1ErCl3+ 0.1 mol·L-1LiClO4-DMSO solution at the different scan rates are shown in Fig. 2. According to the linear relationship of the peak potentialEp–lnυ, the electroreduction of Er(III) on Pt electrodes is a completely irreversible step.

圖1 在鉑電極上的循環(huán)伏安曲線：1) 0.1 mol·L-1 LiClO4-DMSO，2) 0.01 mol·L-1 ErCl3 + 0.1 mol·L-1 LiClO4-DMSO，s = 0.05 cm2，T = 303 K，v = 60 mV·s-1Fig.1 Cyclic voltammograms on Pt electrode: 1) 0.1 mol·L-1 LiClO4-DMSO, 2) 0.01 mol·L-1 ErCl3 + 0.1 mol·L-1 LiClO4-DMSO, s = 0.05 cm2, T = 303 K, v = 60 mV·s-1.

圖 2 0.01 mol·L-1 ErCl3 + 0.1 mol·L-1 LiClO4-DMSO在鉑電極上的循環(huán)伏安曲線，T = 303 K，v/mV·s-1：1) 40，2) 60，3) 80，4) 100Fig. 2 Cyclic voltammograms on Pt electrode in 0.01 mol·L-1 ErCl3 + 0.1 mol·L-1 LiClO4-DMSO, T = 303 K,v/mV·s-1: 1) 40, 2) 60, 3) 80, 4) 100.