The photodegradation of the reactive black 5 (RB5) with CdSe-MSA nanocrystals (NCs) synthesized by using mercaptosuccinic acid (MSA) was studied. The quantum confinement effect was confirmed via the blue shift of absorbance band and higher energy band gap values. Photoluminescence (PL) emissions were riddled with low energy bands arising from the recombination of trapped charge carriers. The surface stress of the nanocrystals from the ligand capped surface and the atomic position relaxation at the stacking fault interface was linked to an observed hexagonal distortion. The comparison of SO and LO modes was used to analyze the quality of NCs, defect and disorder on the NCs surface. Contact time and RB5 degradation with NCs were investigated to understand the adsorption-photocatalysis synergy. Statistical physics parameters were calculated to explain the dye adsorption on tested nanocrystals. CdSe-MSA showed remarkable UV-light photocatalytic activity with a dye degradation of 89% in 120 min.

巯基琥珀酸（MSA）合成的CdSe-MSA纳米晶体（NCs）对活性黑5（RB5）的光降解。）进行了研究。通过吸收带的蓝移和更高的能带隙值证实了量子限制效应。光致发光（PL）发射杂乱无章，这些低能带是由俘获的电荷载流子复合引起的。来自配体封盖表面的纳米晶体的表面应力和堆积缺陷界面处的原子位置弛豫与观察到的六角形畸变有关。SO和LO模式的比较用于分析NC的质量，NC表面的缺陷和无序。研究了NCs的接触时间和RB5降解，以了解吸附-光催化协同作用。计算统计物理参数以解释染料在测试的纳米晶体上的吸附。