Herein, for the first time mesostructured 3D self-assembled β-Ni(OH)₂ clusters with high surface area, large pore size, and uniform flower-like morphology have been synthesized by implementing a novel microwave heating method, using glycine as the cappant. The β-Ni(OH)₂ clusters are subjected to aqueous phase pollutant adsorption for multiple anionic dyes [congo red (CR), acid fuchsin (AF) and acid red 27 (AR-27)], and heavy metal ions [divalent lead ion, Pb(II) and divalent cadmium ion, Cd(II)]. The comprehensive kinetic analyses show that the adsorption of dyes and metal ions on the β-Ni(OH)₂ cluster surface occurs by chemisorption (pseudo-second order kinetics) and intraparticle diffusion (film and pore diffusion) processes. Further, the β-Ni(OH)₂ clusters show excellent equilibrium adsorption capacity for all the anionic dyes and metal ions. The equilibrium isotherm data show homogenous distribution of CR and AF dyes, and heterogeneous distribution of AR-27 dye on the β-Ni(OH)₂ surface. The excellent adsorption efficiency is attributed to the microwave-induced highly hydroxylated rippled 2D surface, open pore architecture, and suitable pore distribution of the β-Ni(OH)₂ clusters, which collectively cause strong hydrogen bonding between the cluster surface and anionic dyes as well as metal ions.

在此，首次采用新型微波加热方法，以甘氨酸为封端剂，合成了具有高表面积、大孔径和均匀花状形态的介观结构 3D 自组装 β-Ni(OH) ₂簇。 . β-Ni(OH) ₂簇受到多种阴离子染料 [刚果红 (CR)、酸性品红 (AF) 和酸性红 27 (AR-27)] 和重金属离子 [二价铅离子，Pb(II) 和二价镉离子，Cd(II)]。综合动力学分析表明染料和金属离子在β-Ni(OH) ₂簇表面的吸附通过化学吸附（伪二级动力学）和颗粒内扩散（膜和孔扩散）过程发生。此外，β-Ni(OH)_2个簇对所有阴离子染料和金属离子均表现出优异的平衡吸附能力。平衡等温线数据显示 CR 和 AF 染料的均匀分布，以及 β-Ni(OH) ₂表面上的 AR-27 染料的不均匀分布。优异的吸附效率归因于微波诱导的高度羟基化波纹二维表面、开孔结构和 β-Ni(OH) ₂簇的合适孔分布，它们共同导致簇表面和阴离子染料之间形成强氢键，如以及金属离子。