Facile synthesis and physicochemical properties of oxygen-doped graphitic carbon nitride (O-g-C3N4) for efficient photocatalytic degradation of methylene blue
酸素ドープグラファイト状窒化炭素(O-g-C3N4)の簡便合成と物理化学的特性:メチレンブルーの効率的な光触媒分解 (AI 翻訳)
Gozzal Sidrasulieva, Нуритдин КАТТАЕВ, Хамдам АКБАРОВ, Altinay Aytmuratova, Sarbinaz Usnatdinova, Jaykhun Mamatov, Otajonov Otajonov, Rayhona Muyassarova, Sadatdin Tileubaev
🤖 gxceed AI 要約
日本語
本研究は、メラミンの熱縮合と超音波分散により、金属を含まない酸素ドープグラファイト状窒化炭素(O-g-C3N4)光触媒を簡便に合成した。バンドギャップ2.64 eVで可視光応答性を示し、太陽光照射下でメチレンブルーを120分でほぼ完全分解した。擬一次反応速度定数は0.018 min⁻¹であり、酸素ドープによる電子構造修飾と電荷分離の向上が活性向上に寄与した。廃水処理への応用が期待される。
English
This study synthesized a metal-free oxygen-doped graphitic carbon nitride (O-g-C3N4) photocatalyst via facile thermal polycondensation of melamine and ultrasonic dispersion. It exhibited a band gap of 2.64 eV, enabling visible-light activity, and achieved near-complete degradation of methylene blue under solar irradiation within 120 min, following pseudo-first-order kinetics (k=0.018 min⁻¹). The enhanced activity is attributed to oxygen-induced electronic structure modification and improved charge separation, suggesting potential for wastewater treatment.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
本論文は基礎的な材料化学研究であり、日本のGX政策や開示実務(SSBJ、有報、統合報告書)との直接的な関連は限定的。ただし、排水処理技術の効率向上は、日本の製造業や水処理産業における環境負荷低減に寄与する可能性があり、長期的な脱炭素・環境技術の基盤として参考になる。
In the global GX context
This paper is a fundamental materials science study with limited direct relevance to global GX disclosure frameworks (TCFD, ISSB, CSRD, SEC). However, it contributes to the broader environmental technology landscape, particularly in wastewater treatment, which is relevant to sustainable water management and circular economy goals. The development of efficient photocatalysts could support industrial decarbonization and pollution reduction efforts globally.
👥 読者別の含意
🔬研究者:Provides a facile synthesis method for O-g-C3N4 with enhanced photocatalytic activity, useful for researchers in photocatalysis and environmental remediation.
📄 Abstract(原文)
A metal-free oxygen-doped graphitic carbon nitride (O-g-C3N4) photocatalyst was synthesized via a facile one-step thermal polycondensation of melamine followed by ultrasonic dispersion. The obtained O-g-C3N4 exhibited a pseudo-layered structure and nanoscale morphology. The optical band gap was determined to be 2.64 eV, indicating visible-light activity. The photocatalytic performance was evaluated through the degradation of methylene blue under solar irradiation, achieving nearly complete degradation within 120 min. Kinetic analysis revealed that the process follows a pseudo-first-order model with a rate constant of 0.018 min–1. The enhanced photocatalytic activity is attributed to oxygen-induced modification of the electronic structure and improved charge separation. The results demonstrate that O-g-C3N4 is an efficient metal-free photocatalyst for wastewater treatment applications.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.32434/0321-4095-2026-167-4-30-42first seen 2026-08-09 05:13:12
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