A graphene oxide (GO) reduction-based method for rapid, efficient and economic removal of organic dyes and heavy metal ions is reported. This method is performed by adding GO, Zn powder and NH₄Cl into wastewater and stirring the solution at ambient conditions for a short period (< 10 min). During this process, NH₄Cl catalyzes the reduction of GO by Zn powder and causes the rapid in-situ adsorption and almost complete precipitation of pollutants by freshly reduced and nanoporous graphene oxide (rGO), therefore efficiently improving adsorption capacity and reducing adsorption time for water treatment. The adsorption capacities for organic dyes (methylene, congo red, lemon yellow) and heavy metal ions (Cd²⁺ and Pb²⁺) were 2.6, 7.6, 3.2, 8.4 and 17.9g g⁻¹. The removal efficiencies are all above 98.46% and a maximum removal efficiency of 99.99% is obtained for Pb²⁺. Moreover, the byproducts of water treatment, i.e., rGO with excessive Zn powder and NH₄Cl-containing water, can be further used in energy or agricultural fields. The present work establishes a new approach for the promising application of GO in the field of water treatment with high efficiency and good economic prospects.

据报道，基于氧化石墨烯（GO）还原的方法可快速，有效和经济地去除有机染料和重金属离子。通过向废水中添加GO，Zn粉和NH ₄ Cl并在环境条件下短时间（<10分钟）搅拌溶液来执行此方法。在此过程中，NH ₄ Cl催化锌粉对GO的还原，并通过新鲜还原的纳米多孔氧化石墨烯（rGO）引起污染物的快速原位吸附和污染物的几乎完全沉淀，因此有效地提高了吸附能力并减少了吸附时间。水处理。对有机染料（亚甲基，刚果红，柠檬黄）和重金属离子（Cd ²⁺和Pb ²⁺）的吸附能力）分别为2.6、7.6、3.2、8.4和17.9g g ^-1。去除效率均在98.46％以上，Pb ^2+的去除效率最高为99.99％。而且，水处理的副产物，即具有过量的锌粉和含NH ₄ Cl的水的rGO ，可以进一步用于能源或农业领域。目前的工作为GO在水处理领域的应用提供了新的途径，具有较高的效率和良好的经济前景。