Spinel MgCe_xFe_2-xO₄ (0 ≤ x ≤ 0.5) nanoparticles was equipped through microwave combustion technique using the extract of Aloe vera plant as the reducing agent. Impression of Ce³⁺ substitution on physic-chemical and photocatalytic characteristics are examined by the techniques, PXRD, FT-IR, HR-SEM, HR-TEM, SAED and VSM. Cubic spinel structure is ensured by PXRD analysis and the crystallite size was employed by Debye Scherer formula, revealed the ranges of 16.35–24.82 nm. HR-SEM, TEM pictures displayed particles like morphology and the SAED pattern revealed highly crystalline in nature. VSM analysis of MgCe_xFe_2-xO₄ (0 ≤ x ≤ 0.5) showed ferromagnetic behaviour. The photocatalytic behaviour was investigated under visible light irradiation by photo-catalytic degradation (PCD) of Malachite Green dye. Among various compositions, sample x = 0.3, exhibit higher PCD efficiency as 98.94% in 90min, corresponding to the degradation rate constant k value of up to 0.0321 min⁻¹. The synthesized catalyst shows good structural and excellent photocatalytic stability with higher degradation efficiency.

尖晶石MGCE _X的Fe _2-x Ö ₄（0≤  X  ≤0.5）的纳米粒子是通过微波燃烧技术使用的提取物配备芦荟植物作为还原剂。通过PXRD，FT-IR，HR-SEM，HR-TEM，SAED和VSM等技术检查了Ce ³⁺取代对理化和光催化特性的影响。通过PXRD分析可确保立方晶尖晶石结构，并且通过Debye Scherer公式采用微晶尺寸，揭示了16.35–24.82 nm的范围。HR-SEM，TEM照片显示出类似形态的颗粒，而SAED模式则显示出高结晶性。MgCe _x Fe _2-x O _4的VSM分析（0≤  X  ≤0.5）表现出铁磁行为。通过孔雀石绿染料的光催化降解（PCD）研究了在可见光照射下的光催化行为。在各种组成中，样品x = 0.3，在90分钟内表现出较高的PCD效率，达到98.94％，对应于高达0.0321 min ^-1的降解速率常数k值。合成的催化剂显示出良好的结构和优异的光催化稳定性，并具有较高的降解效率。