Scholarlink

<p>This study presents the first application of thiourea-based functionalization for layered double hydroxides (LDHs), developing a novel eco-friendly adsorbent, ZnCr-2-FT-LDH, functionalized with 2-furoylthiourea for efficient cadmium removal from contaminated water. The key innovation lies in introducing multiple chelating sites (sulfur, oxygen, and nitrogen donor atoms) through 2-furoylthiourea functionalization, which enables enhanced selectivity and superior adsorption capacity for Cd(II) via strong soft acid-soft base interactions—a strategy never before employed in LDH modification. This functionalization strategy dramatically enhanced adsorption performance, achieving 98% removal efficiency and 171.8 mg·g<sup>−1</sup> capacity, representing a 79% improvement over pristine LDH. Operational optimization demonstrated reduced material consumption (0.50&#xa0;g vs. 0.70&#xa0;g) and faster equilibrium (30&#xa0;min vs. 300&#xa0;min), highlighting economic and practical benefits. The process operates at near-neutral pH (6.3), minimizing chemical adjustments, with excellent regeneration maintaining stable performance over 10 cycles using EDTA. The green hydrothermal synthesis employs low-cost, biodegradable precursors ensuring environmental compatibility and economic feasibility. Analytical validation (LOD = 0.03 mg·L<sup>−1</sup>; RSD = 2.9%) confirmed applicability to natural water samples with high Cd(II) selectivity, suitable for industrial wastewater treatment in electroplating, mining, and battery manufacturing. With straightforward synthesis, scalability, and superior performance, ZnCr-2-FT-LDH represents a promising, sustainable, and commercially viable solution for cadmium remediation.</p> Graphical abstract <p></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

Green synthesis and high-performance adsorption of cadmium using functionalized ZnCr-LDH for sustainable water treatment

  • 期刊论文

  • 发表日期：

    2025年12月4日

查看全文
  • RE. Demirdogen,
  • Z. Yıldırım,
  • D. Akbar

摘要

This study presents the first application of thiourea-based functionalization for layered double hydroxides (LDHs), developing a novel eco-friendly adsorbent, ZnCr-2-FT-LDH, functionalized with 2-furoylthiourea for efficient cadmium removal from contaminated water. The key innovation lies in introducing multiple chelating sites (sulfur, oxygen, and nitrogen donor atoms) through 2-furoylthiourea functionalization, which enables enhanced selectivity and superior adsorption capacity for Cd(II) via strong soft acid-soft base interactions—a strategy never before employed in LDH modification. This functionalization strategy dramatically enhanced adsorption performance, achieving 98% removal efficiency and 171.8 mg·g−1 capacity, representing a 79% improvement over pristine LDH. Operational optimization demonstrated reduced material consumption (0.50 g vs. 0.70 g) and faster equilibrium (30 min vs. 300 min), highlighting economic and practical benefits. The process operates at near-neutral pH (6.3), minimizing chemical adjustments, with excellent regeneration maintaining stable performance over 10 cycles using EDTA. The green hydrothermal synthesis employs low-cost, biodegradable precursors ensuring environmental compatibility and economic feasibility. Analytical validation (LOD = 0.03 mg·L−1; RSD = 2.9%) confirmed applicability to natural water samples with high Cd(II) selectivity, suitable for industrial wastewater treatment in electroplating, mining, and battery manufacturing. With straightforward synthesis, scalability, and superior performance, ZnCr-2-FT-LDH represents a promising, sustainable, and commercially viable solution for cadmium remediation.

Graphical abstract