Scholarlink

<p>The article highlights the effectiveness and simplicity of thermally exfoliated graphitic carbon nitride (g-C<sub>3</sub>N<sub>4</sub>) for the degradation of tetracycline hydrochloride (TCH) in the presence of solar light. The study investigates the thermal exfoliation of g-C<sub>3</sub>N<sub>4</sub> derived from thiourea at five distinct temperatures (450, 475, 500, 525, and 550&#xa0;°C). Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoluminescence (PL), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and Brunauer–Emmett–Teller (BET) analysis, were employed to analyze the materials’ shape, composition, crystallinity, and inherent photoresponsive qualities. With a catalyst dosage of 0.4&#xa0;g/L, approximately 71% of TCH (initial concentration of 10&#xa0;mg/L) was degraded after 60&#xa0;min of direct sunlight exposure. The findings revealed that TOC elimination was 69% with 10&#xa0;mg/L of TCH for 60&#xa0;min, which corresponds to the degradation results. The degradation followed pseudo-first-order kinetics, with a rate constant of 0.020&#xa0;min⁻<sup>1</sup> (R<sup>2</sup> = 0.997). Superoxide radicals <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="13369_2025_9995_Article_IEq1.gif" Format="GIF" Height="20" Rendition="HTML" Resolution="72" Type="Linedraw" Width="29" /> </InlineMediaObject> <EquationSource Format="TEX">\(O_{2}^{ - \cdot }\)</EquationSource> <EquationSource Format="MATHML"><math> <msubsup> <mi>O</mi> <mrow> <mn>2</mn> </mrow> <mrow> <mo>-</mo> <mo>·</mo> </mrow> </msubsup> </math></EquationSource> </InlineEquation> were identified as the primary reactive species responsible for TCH degradation through scavenging agent trapping tests. The catalyst demonstrated excellent stability over five reuse cycles, indicating its potential for environmental applications.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Synthesis of Exfoliated Graphitic Carbon Nitride (g-C3N4) for Tetracycline Hydrochloride (TCH) Degradation: Photocatalytic Efficiency and Mechanisms

  • 期刊论文

  • 发表日期：

    2025年2月4日

查看全文
  • Dhruti Sundar Pattanayak,
  • Chandrakant Thakur,
  • Dharm Pal

摘要

The article highlights the effectiveness and simplicity of thermally exfoliated graphitic carbon nitride (g-C3N4) for the degradation of tetracycline hydrochloride (TCH) in the presence of solar light. The study investigates the thermal exfoliation of g-C3N4 derived from thiourea at five distinct temperatures (450, 475, 500, 525, and 550 °C). Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), photoluminescence (PL), scanning electron microscope (SEM), energy-dispersive X-ray spectroscopy (EDS), and Brunauer–Emmett–Teller (BET) analysis, were employed to analyze the materials’ shape, composition, crystallinity, and inherent photoresponsive qualities. With a catalyst dosage of 0.4 g/L, approximately 71% of TCH (initial concentration of 10 mg/L) was degraded after 60 min of direct sunlight exposure. The findings revealed that TOC elimination was 69% with 10 mg/L of TCH for 60 min, which corresponds to the degradation results. The degradation followed pseudo-first-order kinetics, with a rate constant of 0.020 min⁻1 (R2 = 0.997). Superoxide radicals \(O_{2}^{ - \cdot }\) O 2 - · were identified as the primary reactive species responsible for TCH degradation through scavenging agent trapping tests. The catalyst demonstrated excellent stability over five reuse cycles, indicating its potential for environmental applications.