ABSTRACT

Recently, emerging nanoadsorbents, such as graphene/(reduced) graphene oxide (GO)-based nanomaterials, have been prepared and used in different environmental applications, particularly water purification. This study is a review of the research progress on adsorption mechanisms for bisphenol A removal, which is significantly influenced by the physicochemical properties of various graphene/(reduced) GO-based nanomaterials and water quality conditions. In addition, this study presents the beneficial knowledge for the application of these nanomaterials for water purification. Results on the removal of bisphenol A and several other comparable contaminants using various graphene/(reduced) GO-based nanoadsorbents suggest that their removal can vary significantly depending on the properties of compounds or adsorbents and water chemistry conditions. Therefore, the bisphenol A adsorption performance of these nanomaterials is discussed: (i) to evaluate the overall adsorption capacities of various graphene/(reduced) GO-based nanomaterials based on the properties of nanomaterials and comparable contaminants; (ii) to summarize the influences of main water quality factors, such as pH, temperature, background ions/alkalinity, and natural organic matter or other organics, on adsorption; (iii) to discuss the key mechanisms that affect adsorption on these nanomaterials; and (iv) to describe the possible desorption and reusability of these carbon-based nanomaterials.

摘要

最近，新兴的纳米吸附剂，例如石墨烯/（还原）氧化石墨烯（GO）基纳米材料，已被制备并用于不同的环境应用，特别是水净化。本研究综述了双酚A去除吸附机制的研究进展，双酚A去除机制受各种石墨烯/（还原）GO基纳米材料的理化性质和水质条件的显着影响。此外，这项研究还提出了这些纳米材料在水净化方面的应用的有益知识。使用各种石墨烯/（还原）GO 基纳米吸附剂去除双酚 A 和其他几种类似污染物的结果表明，根据化合物或吸附剂的性质以及水化学条件，它们的去除效果可能会有很大差异。因此，讨论了这些纳米材料的双酚A吸附性能：（i）根据纳米材料和可比污染物的性质来评估各种石墨烯/（还原）GO基纳米材料的总体吸附能力；(ii) 总结主要水质因素，如pH、温度、背景离子/碱度、天然有机质或其他有机物对吸附的影响；(iii) 讨论影响这些纳米材料吸附的关键机制；(iv) 描述这些碳基纳米材料可能的解吸和可重复使用性。(i) 根据纳米材料和类似污染物的特性，评估各种石墨烯/（还原）GO基纳米材料的总体吸附能力；(ii) 总结主要水质因素，如pH、温度、背景离子/碱度、天然有机质或其他有机物对吸附的影响；(iii) 讨论影响这些纳米材料吸附的关键机制；(iv) 描述这些碳基纳米材料可能的解吸和可重复使用性。(i) 根据纳米材料和类似污染物的特性，评估各种石墨烯/（还原）GO基纳米材料的总体吸附能力；(ii) 总结主要水质因素，如pH、温度、背景离子/碱度、天然有机质或其他有机物对吸附的影响；(iii) 讨论影响这些纳米材料吸附的关键机制；(iv) 描述这些碳基纳米材料可能的解吸和可重复使用性。关于吸附；(iii) 讨论影响这些纳米材料吸附的关键机制；(iv) 描述这些碳基纳米材料可能的解吸和可重复使用性。关于吸附；(iii) 讨论影响这些纳米材料吸附的关键机制；(iv) 描述这些碳基纳米材料可能的解吸和可重复使用性。