Scholarlink

<p>Excess anthropogenic carbon dioxide (CO<sub>2</sub>) emissions are a major driver of the ongoing climate crisis, underscoring the urgent need for scalable CO<sub>2</sub> removal technologies Photosynthesis enhancement via microalgae represents a promising pathway. Here, we report a targeted CO<sub>2</sub> removal strategy using a metal-organic framework (MOF), ZIF-8-NH<sub>2</sub>, assembled directly onto the surface of <i>Spirulina platensis</i>. Synthesized through a mixed-ligand route, the water-stable ZIF-8-NH<sub>2</sub> exhibits primary amine functionality that promotes hydrogen bonding with microalgal membrane proteins, enabling stable self-assembly as confirmed by spectroscopic and microscopic analyses. At an optimal concentration of 50 ppm, ZIF-8-NH<sub>2</sub> increased dry cell weight and CO<sub>2</sub> fixation rate by 149% and 93%, respectively, relative to unmodified controls, whereas free ZIF-8 impaired growth. In bicarbonate-rich media, the enhancement in biomass was reduced to 25%, suggesting that the assembled MOF functions as an artificial CO<sub>2</sub>-concentrating mechanism. These findings establish a promising platform for enhancing microalgal carbon capture and offer new insights into cell-surface MOF 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

Self-assembled metal organic frameworks enhance carbon fixation in Spirulina

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2025年11月19日

查看全文
  • Yue Rong,
  • Jiaxin Chen,
  • Mingjing Zhang,
  • Tingting Wu,
  • Yuan Jiang,
  • Xin Lin,
  • Minhan Dai

摘要

Excess anthropogenic carbon dioxide (CO2) emissions are a major driver of the ongoing climate crisis, underscoring the urgent need for scalable CO2 removal technologies Photosynthesis enhancement via microalgae represents a promising pathway. Here, we report a targeted CO2 removal strategy using a metal-organic framework (MOF), ZIF-8-NH2, assembled directly onto the surface of Spirulina platensis. Synthesized through a mixed-ligand route, the water-stable ZIF-8-NH2 exhibits primary amine functionality that promotes hydrogen bonding with microalgal membrane proteins, enabling stable self-assembly as confirmed by spectroscopic and microscopic analyses. At an optimal concentration of 50 ppm, ZIF-8-NH2 increased dry cell weight and CO2 fixation rate by 149% and 93%, respectively, relative to unmodified controls, whereas free ZIF-8 impaired growth. In bicarbonate-rich media, the enhancement in biomass was reduced to 25%, suggesting that the assembled MOF functions as an artificial CO2-concentrating mechanism. These findings establish a promising platform for enhancing microalgal carbon capture and offer new insights into cell-surface MOF applications.