The mercury emission pollution of coal-fired power plants has posed big threatens to the human heath and the environment. Here, a graphene-analogous carbon nitride (GCN) is used to capture Hg⁰ from simulated flue gas in a fixed-bed reactor at low temperatures. The GCN displays good Hg⁰ adsorption capability with Hg⁰ removal efficiency of 32.4-69.4% within 25-200 °C. CuS incorporation can greatly reinforce the Hg⁰ capture ability of the GCN. The optimal loading value of CuS is 10 wt%. Complete mercury capture is reached over 10CuS/GCN in the temperature range of 25-100 °C. Existence of NO marginally suppresses the Hg⁰ removal process, while presence of SO₂ has hardly influence on Hg⁰ capture. The copper and polysulfide active sites as well as the graphene-analogous nanosheet structure of the GCN contribute to the prominent Hg⁰ capture performance of the CuS-anchored GCN.

燃煤电厂的汞排放污染对人类健康和环境构成了巨大威胁。在这里，类似于石墨烯的氮化碳（GCN）用于在低温下从固定床反应器中的模拟烟道气中捕获Hg ⁰。GCN表现出良好的Hg ⁰吸附能力，在25-200°C范围内的Hg ⁰去除效率为32.4-69.4％。CuS的掺入可以大大增强GCN的Hg ⁰捕获能力。CuS的最佳负载值为10重量％。在25-100°C的温度范围内，通过10CuS / GCN可以完全捕集汞。NO的存在会轻微抑制Hg ^0的去除过程，而SO _2的存在几乎不会影响Hg^0个捕获。GCN的铜和多硫化物活性位以及石墨烯类似的纳米片结构有助于固定CuS的GCN的显着Hg ⁰捕获性能。