Although the adsorption method was considered as the most realistic way in the removal of gaseous hydrogen sulfide (H₂S), finding an efficient sorbent at low temperature with the high humid condition is still desired. A layered double hydroxide (LDH) of CoFe bimetal was prepared by co-precipitation of bivalent cobalt and trivalent iron and applied to H₂S gas stream treatment. CoFe-LDH was optimally synthesized under 3:1 of Co/Fe molar ratio, pH 10 of a mixing solution of precipitating reagents, and 60°C of aging temperature, which allowed high breakthrough capacity (0.209 g H₂S/g) in H₂S removal. XPS and spectral analyses on spent CoFe-LDH proved that the H₂S removal proceeded through two reaction processes: formed intermediate HS^- from dissociated H₂S which finally replaced with the hydroxide on the metal surface; and formed HS^- through carbonate counter ion at interlayer. This resulted in the formation of CO₂ as a gaseous product with CoFeS₂ and CoFeSO₄ as solid products after the treatment of H₂S. Environmental application evidenced the prepared CoFe-LDH more efficient in high humid (90% relative humidity (RH) at room temperature) condition and even at high concentrated H₂S source (3333 ppm).

尽管吸附方法被认为是去除气态硫化氢（H ₂ S）的最现实的方法，但仍需要在低温和高湿度条件下找到有效的吸附剂。通过二价钴和三价铁的共沉淀制备CoFe双金属的层状双氢氧化物（LDH），并将其应用于H ₂ S气流处理。在Co / Fe摩尔比为3：1，沉淀剂混合溶液的pH为10以及时效温度为60°C的条件下最佳合成了CoFe-LDH，这使得在Co中的高穿透能力（0.209 g H ₂ S / g）成为可能。 H ₂ S去除。XPS和对废CoFe-LDH的光谱分析证明了H ₂小号去除通过两个反应流程进行：形成的中间HS ^-从解离ħ ₂ S的最后与金属表面上的氢氧化取代; 和形成HS ^-通过在层间碳酸抗衡离子。经过H ₂ S处理后，形成了以气态产物形式形成CO ₂以及以CoFeS ₂和CoFeSO ₄作为固态产物。环保应用表明，所制备的CoFe-LDH在高湿度（90％相对湿度（RH））下更有效在室温下），甚至在高浓度的H ₂ S源（3333 ppm）下。