为了缓解工业废水中重金属离子对当前水体环境的破坏作用,国内外新型吸附材料的多样性更新迅速。有机框架材料(MOFs)及其衍生物凭借其表面积优势和结构多样化优势在众多吸附材料中脱颖而出,同时依靠良好的水稳性、成熟的合成工艺、稳定...为了缓解工业废水中重金属离子对当前水体环境的破坏作用,国内外新型吸附材料的多样性更新迅速。有机框架材料(MOFs)及其衍生物凭借其表面积优势和结构多样化优势在众多吸附材料中脱颖而出,同时依靠良好的水稳性、成熟的合成工艺、稳定的应用性能、丰富的再生性等,成为当前研究重金属废水吸附应用的主要材料。基于此,文章总结了国内外有机框架材料(MOFs)衍生物对含重金属废水污染治理的研究进展,重点阐述了金属有机框架材料(MOFs)的铁基、铜基、锆基、铝基等功能化改性方法以及在水体中重金属离子的去除方面的应用研究动态,并对未来金属有机框架材料(MOFs)的功能化及应用前景方面进行了展望。指出通过改进工艺和配位金属功能化修饰,制备多金属多功能化的MOFs材料是今后的主要研究热点。In order to alleviate the destructive effect of heavy metal ions in industrial wastewater on the current water environment, the diversity of new adsorption materials at home and abroad has been rapidly updated. Organic framework materials (MOFs) and their derivatives stand out among numerous adsorption materials due to their advantages in surface area and diverse structures. At the same time, relying on good water stability, mature synthesis processes, stable application performance, rich regenerability, etc., they have become the main materials for studying the adsorption application of heavy metal wastewater. Based on this, this article summarizes the research progress of derivatives of MOFs in the treatment of heavy metal-containing wastewater pollution at home and abroad, focusing on the functionalization modification methods of MOFs such as iron-based, copper-based, zirconium-based, aluminum-based, and the application research trends in the removal of heavy metal ions in water. The future functionalization and application prospects of MOFs are also discussed. It is pointed out that the preparation of multi-metal multifunctional MOFs materials through improved processes and coordination of metal functionalization modification is the main research hotspot in the future.展开更多
电催化二氧化碳(CO_(2))还原被认为是将CO_(2)转化为可再生能源产品的一种有前途的方法。开发性能优异的电催化剂高效完成这一重要反应是关键。镍基催化剂广泛应用于电催化CO_(2)还原研究,但是,镍纳米颗粒经常表现较差的催化性能。在本...电催化二氧化碳(CO_(2))还原被认为是将CO_(2)转化为可再生能源产品的一种有前途的方法。开发性能优异的电催化剂高效完成这一重要反应是关键。镍基催化剂广泛应用于电催化CO_(2)还原研究,但是,镍纳米颗粒经常表现较差的催化性能。在本文中,通过在氮气气氛中高温热解镍基金属有机骨架(MOF)、尿素和炭黑混合物,获得了镍纳米颗粒负载于多孔碳氮中的催化材料(NiNPs-NC)。有趣的是,NiNPs-NC在H型和流动相电池中都表现出优异的CO_(2)电还原性能。在H型电解池和-0.67–-1.07 V vs.RHE(可逆氢电极)电位窗口内,NiNPs-NC催化CO_(2)还原为CO的法拉第效率大于90%,其中,在-0.87 V vs.RHE时,CO的法拉第效率约为100%。在流动相电解池和-0.50–-0.70 V vs.RHE电位窗口内,NiNPs-NC催化CO_(2)还原为CO的选择性大于95%。电化学阻抗谱图和塔菲尔斜率表征显示,NiNPs-NC的高催化活性归因于其在催化过程中的快速电荷转移。本文提供了一种制备高效CO_(2)电还原催化剂的方法。展开更多
文摘为了缓解工业废水中重金属离子对当前水体环境的破坏作用,国内外新型吸附材料的多样性更新迅速。有机框架材料(MOFs)及其衍生物凭借其表面积优势和结构多样化优势在众多吸附材料中脱颖而出,同时依靠良好的水稳性、成熟的合成工艺、稳定的应用性能、丰富的再生性等,成为当前研究重金属废水吸附应用的主要材料。基于此,文章总结了国内外有机框架材料(MOFs)衍生物对含重金属废水污染治理的研究进展,重点阐述了金属有机框架材料(MOFs)的铁基、铜基、锆基、铝基等功能化改性方法以及在水体中重金属离子的去除方面的应用研究动态,并对未来金属有机框架材料(MOFs)的功能化及应用前景方面进行了展望。指出通过改进工艺和配位金属功能化修饰,制备多金属多功能化的MOFs材料是今后的主要研究热点。In order to alleviate the destructive effect of heavy metal ions in industrial wastewater on the current water environment, the diversity of new adsorption materials at home and abroad has been rapidly updated. Organic framework materials (MOFs) and their derivatives stand out among numerous adsorption materials due to their advantages in surface area and diverse structures. At the same time, relying on good water stability, mature synthesis processes, stable application performance, rich regenerability, etc., they have become the main materials for studying the adsorption application of heavy metal wastewater. Based on this, this article summarizes the research progress of derivatives of MOFs in the treatment of heavy metal-containing wastewater pollution at home and abroad, focusing on the functionalization modification methods of MOFs such as iron-based, copper-based, zirconium-based, aluminum-based, and the application research trends in the removal of heavy metal ions in water. The future functionalization and application prospects of MOFs are also discussed. It is pointed out that the preparation of multi-metal multifunctional MOFs materials through improved processes and coordination of metal functionalization modification is the main research hotspot in the future.
文摘电催化二氧化碳(CO_(2))还原被认为是将CO_(2)转化为可再生能源产品的一种有前途的方法。开发性能优异的电催化剂高效完成这一重要反应是关键。镍基催化剂广泛应用于电催化CO_(2)还原研究,但是,镍纳米颗粒经常表现较差的催化性能。在本文中,通过在氮气气氛中高温热解镍基金属有机骨架(MOF)、尿素和炭黑混合物,获得了镍纳米颗粒负载于多孔碳氮中的催化材料(NiNPs-NC)。有趣的是,NiNPs-NC在H型和流动相电池中都表现出优异的CO_(2)电还原性能。在H型电解池和-0.67–-1.07 V vs.RHE(可逆氢电极)电位窗口内,NiNPs-NC催化CO_(2)还原为CO的法拉第效率大于90%,其中,在-0.87 V vs.RHE时,CO的法拉第效率约为100%。在流动相电解池和-0.50–-0.70 V vs.RHE电位窗口内,NiNPs-NC催化CO_(2)还原为CO的选择性大于95%。电化学阻抗谱图和塔菲尔斜率表征显示,NiNPs-NC的高催化活性归因于其在催化过程中的快速电荷转移。本文提供了一种制备高效CO_(2)电还原催化剂的方法。
