Figure 8:
The absorption spectra
A
(
λ
): 1–3: Cu + H
2
O; 1:
𝜏
a
g
= 2 min,
𝜏
𝑒
= 40 min; 2:
𝜏
a
g
= 3 h,
𝜏
𝑒
= 40 min; 3:
𝜏
a
g
= 1.3 h,
𝜏
𝑒
= 3 h; 4-5: Cu + 0.01 SDS; 4:
𝜏
a
g
= 10 min,
𝜏
𝑒
= 3 h; 5:
𝜏
a
g
= 64 h,
𝜏
𝑒
= 3 h; 6–7: Cu + 0.1 SDS; 6:
𝜏
a
g
= 10 min,
𝜏
𝑒
= 3 h; 7:
𝜏
a
g
= 19 h,
𝜏
𝑒
= 3 h.
