Waste battery-derived GO/mesoporous TiO2 nanocomposites for visible-light photocatalytic degradation of crystal violet

IF 2.4 4区物理与天体物理 Q3 PHYSICS, CONDENSED MATTER

Solid State Communications Pub Date : 2025-10-08 DOI:10.1016/j.ssc.2025.116190

Md Amran Hossen Suvo , Chowdhury Raiyath , Samia I. Liba , Suptajoy Barua , Mahabub Alam Bhuiyan

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引用次数: 0

Abstract

The current work presents a facile and viable synthesis of anisotropic spindle shape mesoporous TiO₂ (Meso-TiO₂) nanoparticles by solvothermal method and their decoration on waste battery derived graphene oxide (GO) nanosheets by a waste to wealth approach to produce GO/Meso-TiO₂ nanocomposite, an efficient sunlight driven photocatalyst for the degradation of crystal violet (CV) dye. The GO/Meso-TiO₂ composites exhibit a pure anatase phase tetragonal crystal structure, reduced agglomeration, several carbon and oxygen containing functional groups, narrowed band gap (2.81 eV), and strong visible-light absorption. Owing to these features, GO/Meso-TiO₂ composites demonstrate enhanced photocatalytic degradation (87.14 %) of crystal violet (CV) dye under 100 min of sunlight irradiation, outperforming conventional TiO₂ photocatalyst. The GO/Meso-TiO₂ composites achieve degradation efficiencies of 87.14 % and 98.58 % at pH 7 and 10, respectively. Scavengers test reveal the dominating role of hydroxyl (∙OH) radicals in the CV dye degradation process. The GO/Meso-TiO₂ catalysts also demonstrate stability, retaining ∼81 % efficiency after four cycles. These findings highlight the novel integration of waste-derived GO with Meso-TiO₂ for efficient, reusable, sunlight-driven wastewater treatment.

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废电池衍生的氧化石墨烯/介孔TiO2纳米复合材料用于可见光光催化降解结晶紫

本研究提出了一种简单可行的溶剂热法合成各向异性纺轴形介孔TiO2 （Meso-TiO2）纳米颗粒的方法，并将其装饰在废电池衍生的氧化石墨烯（GO）纳米片上，以生产GO/Meso-TiO2纳米复合材料，这是一种用于降解结晶紫（CV）染料的高效阳光驱动光催化剂。氧化石墨烯/介观tio2复合材料具有纯锐钛矿相四方晶体结构，团聚减少，含碳和含氧官能团多，带隙窄（2.81 eV），强可见光吸收。由于这些特点，GO/Meso-TiO2复合材料在100 min的阳光照射下对结晶紫（CV）染料的光催化降解率（87.14%）优于传统的TiO2光催化剂。在pH为7和10时，GO/Meso-TiO2复合材料的降解效率分别为87.14%和98.58%。清除剂试验揭示了羟基（∙OH）自由基在CV染料降解过程中的主导作用。GO/Meso-TiO2催化剂也表现出稳定性，在四个循环后保持了81%的效率。这些发现强调了废物来源的氧化石墨烯与介介二氧化钛的新型整合，以实现高效，可重复使用，阳光驱动的废水处理。

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来源期刊

Solid State Communications 物理-物理：凝聚态物理

CiteScore

3.40

自引率

4.80%

发文量

287

审稿时长

51 days

期刊介绍： Solid State Communications is an international medium for the publication of short communications and original research articles on significant developments in condensed matter science, giving scientists immediate access to important, recently completed work. The journal publishes original experimental and theoretical research on the physical and chemical properties of solids and other condensed systems and also on their preparation. The submission of manuscripts reporting research on the basic physics of materials science and devices, as well as of state-of-the-art microstructures and nanostructures, is encouraged. A coherent quantitative treatment emphasizing new physics is expected rather than a simple accumulation of experimental data. Consistent with these aims, the short communications should be kept concise and short, usually not longer than six printed pages. The number of figures and tables should also be kept to a minimum. Solid State Communications now also welcomes original research articles without length restrictions. The Fast-Track section of Solid State Communications is the venue for very rapid publication of short communications on significant developments in condensed matter science. The goal is to offer the broad condensed matter community quick and immediate access to publish recently completed papers in research areas that are rapidly evolving and in which there are developments with great potential impact.