An aqueous Aluminium Hydroxide [Al(OH)₃] decorated Graphitic Carbon Nitride [g-C₃N₄] nanowires based hybrid nanofluid has been fabricated using the two-step method. Where, both the nanoparticles are synthesized separately and dispersed throughout the base fluid with the aid of ultrasonic cavitation technique. The hybrid nanofluid photocatalytic performance has been compared with Al(OH)₃ – (g-C₃N₄) hybrid photocatalyst. After the preparation, the hybrid nanofluid and nanoparticles properties are systematically characterized. The FESEM results confirmed the effectiveness of the low frequency (30 kHz) ultrasonication in coating the Al(OH)₃ nanoparticle on to the g-C₃N₄ surface. The larger BET specific surface area (80.45 m²/g) and the lower bandgap energy (2.35 eV) assured the enhanced photocatalytic H₂ production from the degradation of Methylene Blue dye. Moreover, the obtained 0.5 vol% Al(OH)₃–(g-C₃N₄)/H₂O hybrid nanofluid produced about 6 times higher H₂ than that of Al(OH)₃ – (g-C₃N₄) hybrid photocatalyst. Even after 4 cycles, the hybrid nanofluid showed only 1% decrement in the photocatalytic performance. This study of replacing photocatalyst with the hybrid nanofluid delivers a sustainable route to harvest the H₂ from photocatalytic degradation of the industrial pollutants in the presence of visible light.

使用两步法制备了水性氢氧化铝[Al（OH）₃ ]修饰的石墨化氮化碳[gC ₃ N ₄ ]纳米线纳米杂化流体。其中，两个纳米颗粒分别合成，并借助超声空化技术分散在整个基础液中。杂化纳米流体的光催化性能已与Al（OH）₃ –（gC ₃ N ₄）杂化光催化剂进行了比较。制备后，系统地表征了杂化纳米流体和纳米颗粒的性质。FESEM结果证实了低频（30 kHz）超声处理对Al（OH）₃涂层的有效性纳米颗粒附着在gC ₃ N ₄表面。较大的BET比表面积（80.45 m ² / g）和较低的带隙能（2.35 eV）确保了亚甲基蓝染料的降解提高了光催化H _2的产生。此外，获得的0.5体积％的Al（OH）₃ - （GC ₃ Ñ ₄）/ H ₂ ö混合纳米流体产生约6倍更高ħ ₂比Al（OH）₃ - （GC ₃ Ñ ₄）杂化光催化剂。即使经过4个循环，杂化纳米流体的光催化性能也仅降低了1％。这项用杂化纳米流体替代光催化剂的研究为在可见光存在下从工业污染物的光催化降解中收集H ₂提供了一条可持续的途径。