Nazal Mazen K, Khaled Mazen, Aljundi Isam H, Atieh Muataz, Oweimreen Ghassan A, Abulkibash Abdalla M
a Chemistry Department , King Fahd University of Petroleum & Minerals (KFUPM) , Dhahran , Saudi Arabia.
b Center for Environment & Water (CEW) , King Fahd University of Petroleum & Minerals (KFUPM) , Dhahran , Saudi Arabia.
Environ Technol. 2017 Dec;38(23):2949-2963. doi: 10.1080/09593330.2017.1284269. Epub 2017 Feb 10.
Carbon nanotube (CNT) and graphene oxide (GO) as common nanostructures were modified with silver sulfide (AgS) using chemical vapor deposition. The raw and modified materials were tested for the removal of Dibenzothiophene (DBT) from a model fuel in batch mode adsorption experiments. The maximum adsorption capacities of DBT were 52.18 and 49.65 mg g, using CNT-AgS and GO-AgS, respectively. The adsorption isotherm was modeled using Freundlich, Langmuir and Temkin models using linear and non-linear regression. The squared correlation coefficient (R) and HYBRID error function were used to determine the best adsorption model. IR spectroscopy was used to study the DBT adsorption mechanism, and it was found that the DBT molecules lie flat on the surface of the developed adsorbents. Significant improvement was achieved in the adsorption of DBT using CNT-Ag2S and GO-AgS, where the maximum adsorption capacity increased by 127% and 117% respectively, which indicates a stronger interaction between DBT and the modified adsorbents.
作为常见的纳米结构，碳纳米管（CNT）和氧化石墨烯（GO）通过化学气相沉积法用硫化银（AgS）进行了改性。在分批模式吸附实验中，对原始材料和改性材料从模拟燃料中去除二苯并噻吩（DBT）的性能进行了测试。使用CNT - AgS和GO - AgS时，DBT的最大吸附容量分别为52.18和49.65 mg g。采用线性和非线性回归，利用弗伦德利希、朗缪尔和坦金模型对吸附等温线进行了建模。使用平方相关系数（R）和混合误差函数来确定最佳吸附模型。利用红外光谱研究了DBT的吸附机理，发现DBT分子在所制备的吸附剂表面平躺。使用CNT - Ag2S和GO - AgS时，DBT的吸附性能有显著提高，最大吸附容量分别提高了127%和117%，这表明DBT与改性吸附剂之间的相互作用更强。
