具有可控制组成和形态的NiFe分层双氧化物,用于有效地从水中去除Cr (VI)
Rattanawadee Ploy Wijitwongwan1, Makoto Ogawa1
1School of Energy Science and Engineering, Vidyasirimedhi Institute of Science and Technology (VISTEC), 555 Moo 1 Payupnai, Wangchan, Rayong 21210, Thailand.
Langmuir : the ACS journal of surfaces and colloids
|January 1, 2024
概括
一种新型的泡状多孔-铁层双氧化物 (NiFe-LDH) 通过吸附和光催化还原有效地去除六价 (Cr(VI),其性能优于其他材料.
科学领域:
- 材料科学 材料科学 材料科学
- 环境化学环境化学
- 纳米技术纳米技术
背景情况:
- 六价 (Cr(VI)) 对环境和健康构成重大风险.
- 开发有效的吸附剂和光催化剂来去除Cr (VI) 是至关重要的.
研究的目的:
- 合成和表征一种具有特定成分的独特NiFe-LDH (Fe/(Ni+Fe) = 0.05).
- 通过吸附和光催化还原来评估合成的NiFe-LDH在通过吸附和光催化还原从水溶液中去除Cr (VI) 的性能.
主要方法:
- 使用尿素的共同沉方法,以创建类似泡的多孔NiFe-LDH结构.
- 在酸性K2Cr2O7溶液中的吸附和光催化还原实验.
- 材料特性和去除效率的表征.
主要成果:
- 类似泡的多孔NiFe-LDH显示出优越的Cr (VI) 吸附能力 (122 mg g-1),以及吸附率 (0.017 g mg-1 min-1).
- 这种材料还表现出高光催化降解率的Cr (VI) (0.012分-1).
- 独特的多孔结构显著提高了Cr(VI) 清除性能.
结论:
- 类似泡的多孔NiFe-LDH是一种高效的材料,可用于Cr(VI) 修复.
- 材料形态和成分是优化Cr6去除效率的关键因素.
- 这项研究强调了针对环境污染物处理量身定制的LDH的潜力.
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