Prolong consumption of arsenic-rich drinking water causes serious health problem. Aiming to minimize the problem, it is attempted to develop cheap and advanced materials for arsenic extraction from the contaminated water. Thus, multifunctional graphene oxide (GO)-incorporated iron-aluminium mixed oxide (GIAMO) composite has been prepared with five different GO content, and evaluated by batch method for the arsenic(III) removal efficiency. Among the as-prepared GIAMO samples, three samples consisting 1.0, 2.0 and 3.0 g of GO show equally good (92–95%) arsenic(III) removal efficiency, which is 30–35% higher than pristine iron-aluminium oxide (IAMO) from an aqueous solution (5.0 mg As^III·L⁻¹) at pH 7.0 (± 0.2) and 303 K. Thus, 1.0 g GO-inserted GIAMO (GIAMO-1) sample was characterized as microcrystalline (10–15 nm) with BET surface area about 1.45 times higher than IAMO and investigated for the arsenic(III) adsorption. Optimized pH for arsenic(III) adsorption is 6.0–8.0. The kinetic data agree more closely with pseudo-first order equation (R² = 0.98–0.99) than pseudo-second order equation (R² = 0.92–0.93). The equilibrium data describe the Langmuir isotherm (R² = 0.97–0.98) better than the Freundlich isotherm (R² = 0.91–0.92), showing the Langmuir monolayer capacity 42.2836 mg·g⁻¹ at 293 K which drops to 24.9170 mg·g⁻¹ at 313 K. High negative enthalpy change (ΔH° ∼ −224 kJ. mol⁻¹) is responsible for the spontaneous reaction (ΔG° = negative) despite unfavorable entropy change (ΔS° = −0.71 kJ. mol⁻¹). The order of competitive effect of PO₄³⁻, SO₄²⁻ and HCO₃⁻ on arsenic(III) removal efficiency is PO₄³⁻ > SO₄²⁻ > HCO₃⁻. However, the high HCO₃⁻ (> 200 mg·L⁻¹) enhances the arsenic(III) removal efficiency of this material. 2.0 M NaOH can regenerate arsenic adsorbed GIAMO-1 only up to 50–60%. 0.65 g. of composite per L of high arsenic (As_total: 0.115 mg L⁻¹) groundwater can upgrade to potable standard, encouraging possible safe use for high arsenic water treatment. Highly negative enthalpy change, poor regeneration, FTIR, XRD and CV analyses of arsenic-rich solid suggested that arsenic(III) is stabilized over the solid surface without oxidation by surface complex formation.

长时间食用富含砷的饮用水会导致严重的健康问题。为了使问题最小化，尝试开发廉价且先进的材料以从受污染的水中提取砷。因此，已经制备了具有五种不同GO含量的多功能氧化石墨（GO）-掺入的铁-铝混合氧化物（GIAMO）复合材料，并通过分批方法评估了砷（III）的去除效率。在准备好的GIAMO样品中，三个包含1.0 g，2.0 g和3.0 g GO的样品显示出同样良好的（92–95％）砷（III）去除效率，比原始铁铝氧化物（IAMO）高30–35％ ）（5.0 mg As ^III ·L ^-1）在pH 7.0（±0.2）和303 K下。因此，1.0 g GO插入的GIAMO（GIAMO-1）样品被表征为微晶（10-15 nm），BET表面积比IAMO高1.45倍，并进行了研究。砷（III）吸附。砷（III）吸附的最适pH为6.0-8.0。动力学数据与拟一阶方程（R ²  = 0.98–0.99）相比，与拟二阶方程（R ²  = 0.92–0.93）更接近。平衡数据描述的Langmuir等温线（R ²  = 0.97–0.98）优于Freundlich等温线（R ²  = 0.91-0.92），显示293 K时Langmuir单层容量为42.2836 mg·g ^-1，降至24.9170 mg·g ^-1在313 K时。尽管熵变不利（ΔS°= -0.71 kJ。mol ^-1），但高的负焓变化（ΔH°〜-224 kJ。mol ^-1）仍是自发反应（ΔG°=负）的原因。的PO的竞争作用的顺序₄ ^3-，SO ₄ ^2-和HCO ₃ ^-砷（III）的去除效率是PO ₄ ^3-  > SO ₄ ^2-  > HCO ₃ ^- 。但是，HCO ₃ ^-（> 200 mg·L ^-1）提高了这种材料的砷（III）去除效率。2.0 M NaOH最多只能再生50-60％的砷吸附的GIAMO-1。0.65克 每升高砷（_总计：0.115 mg L ^-1）中的复合物可提高至饮用水标准，从而鼓励安全使用高砷水进行处理。富砷固体的高度负焓变化，较差的再生，FTIR，XRD和CV分析表明，砷（III）在固体表面上稳定，不会因表面配合物的形成而氧化。