In the path of walking on the road of sustainable and eco-friendly production methods for manufacturing nanomaterials and utilizing them in environmental applications, this article deals with the prosperous synthesis of a biogenic cyclam-functionalized homologous SBA-15 (BCFH-SBA-15). For this purpose, the agricultural waste of the extensively consumed sorghum was used as a rich source of silica in the preparation of BCFH-SBA-15 with a bimodal micro-mesoporous architecture and a substantial surface area of 325 m² g^–1 through a simple one-pot environmentally friendly approach. The material was structurally characterized through the use of different instrumental analyses such as XRD, FTIR, FESEM, TEM, and nitrogen adsorption/desorption isotherms. BCFH-SBA-15 proved to be highly efficient in adsorbing Ni(II) in aqueous solutions, as confirmed by the most reliable classical models utilized for determining isotherm, thermodynamic, and kinetic adsorption parameters. The Langmuir isotherm model provided the most accurate representation of the experimental results, and it was used to calculate the maximum adsorption capacity of BCFH-SBA-15 under optimal conditions (pH = 6.0, adsorbent dose = 3.00 mg, contact time = 20 min). The maximum adsorption capacity at four temperatures of 298, 303, 308, and 313 K was estimated to be 243.36, 253.87, 260.95, and 266.28 mg g^–1, respectively; surpassing most previously reported adsorbents for Ni(II) adsorption. The thermodynamic data of Ni(II) adsorption on the BCFH-SBA-15 indicated a strong chemisorption (\({\triangle H}_{{\rm{ads}}.}^{\circ }\) = +122.61 kJ mol^–1) and spontaneous process (\({\triangle G}_{{\rm{ads}}.}^{\circ }\)_.= −29.161 to −36.801 kJ mol^–1) with a low degree of randomness (\({\triangle S}_{{\rm{ads}}.}^{\circ }\)_. = 0.5093 kJ mol^–1 K^–1).

在走可持续、环保的纳米材料生产方法及其在环境应用中的道路上，本文介绍了生物基环酰胺功能化同源SBA-15（BCFH-SBA-15）的繁荣合成。为此，广泛消耗的高粱农业废料被用作制备 BCFH-SBA-15 的丰富二氧化硅源，该 BCFH-SBA-15 具有双峰微介孔结构，表面积达 325 m ² g ^–1 通过简单的一锅环保方法。通过使用不同的仪器分析（例如 XRD、FTIR、FESEM、TEM 和氮气吸附/解吸等温线）对材料进行结构表征。事实证明，BCFH-SBA-15 在水溶液中吸附 Ni(II) 非常高效，用于确定等温线、热力学和动力学吸附参数的最可靠的经典模型证实了这一点。 Langmuir 等温线模型提供了最准确的实验结果表示，并用于计算最佳条件下（pH = 6.0，吸附剂剂量 = 3.00 mg，接触时间 = 20 分钟）BCFH-SBA-15 的最大吸附容量。在298、303、308和313 K四个温度下的最大吸附容量估计分别为243.36、253.87、260.95和266.28 mg g ^–1 ；超过了大多数先前报道的 Ni(II) 吸附剂。 BCFH-SBA-15 上 Ni(II) 吸附的热力学数据表明具有很强的化学吸附作用 (\({\triangle H}_{{\rm{ads}}.}^{\circ }\) = +122.61 kJ mol ^–1 ）和自发过程（\({\triangle G}_{{\rm{ads}}.}^{\circ }\)= -29.161 到 -36。801 kJ mol ^–1 ），随机性较低（\({\triangle S}_{{\rm{ads}}.}^{\circ }\) = 0.5093 kJ mol ^–1 K ^–1 ）。