...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Catalysis science & technology >ZnMn2O4 nanorods: an effective Fenton-like heterogeneous catalyst with t(2g)(3)e(g)(1) electronic configuration
【24h】

ZnMn2O4 nanorods: an effective Fenton-like heterogeneous catalyst with t(2g)(3)e(g)(1) electronic configuration

机译：Fenton-like ZnMn2O4纳米棒:一个有效非均相催化剂与t (2 g) (3) e (g) (1)电子配置

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Fenton-like catalysis is promising in the treatment of organic-containing wastewater owing to easy separation of solid catalysts, wide working pH range, and high efficiency. Although alpha-Mn2O3 with Mn3+ in t(2g)(3)e(g)(1) electronic configuration displays high activity in photocatalytic oxidation of water, it is not preferred as a Fenton-like catalyst due to its low phase-transition temperature. Herein, we developed a Fenton-like catalyst with both high activity and stability. Two catalysts, namely, spinet ZnMn2O4 and ZnMnO3 nanorods were synthesized by a facile co-precipitation method. Experimental results indicate that the two Mn-containing catalysts have similar rod-like morphology, but with different crystallographic structures and oxidation states of Mn. DFT calculations suggest t 29 3 % 1 electron configuration of Mn in ZnMn2O4 with strong Jahn-Teller distortion of MnO6 units. ZnMn2O4 nanorod Fenton-like catalyst displays high activity in the degradation of methyl violet with a degradation ratio of 100% at 120 min and a TOC removal rate near 90% after 240 min. (OH)-O-center dot and (OOH)-O-center dot/O-center dot(2)- reactive radicals generated in the catalytic system were studied by EPR spectroscopy. The ZnMn2O4 nanorods exhibited much better catalytic performance than ZnMnO3 nanorods. The t(2g)(3)e(g)(1) configuration of Mn in spinet ZnMn2O4 , facilitating the dissociation of various oxygen-containing radicals through strong JT distortion, is responsible for its higher catalytic activity.
机译：Fenton-like催化是有前途的治疗organic-containing废水由于容易分离的固体催化剂,宽pH值范围内工作,效率高。alpha-Mn2O3与Mn3 + t (2 g) (3) e (g) (1)电子配置显示器高活动在光催化氧化的水,它不是作为一个Fenton-like催化剂由于其首选低相变温度。开发了一种Fenton-like催化剂与高活动和稳定。小型立式钢琴ZnMn2O4和ZnMnO3纳米棒合成了一个灵巧的共同沉淀的方法。实验结果表明,这两个概念Mn-containing催化剂也有类似的棒状形态,但不同的晶体结构和锰的氧化态。1个电子计算表明t 29 3%配置ZnMn2O4 Mn的强劲姜泰勒扭曲MnO6单位。奈米棒Fenton-like催化剂显示高活动的降解甲基紫100%的降解率在120分钟和TOC240分钟后删除率接近90%。(OH) -O-center点和-O-center点/ O-center(哦)点(2)-活性自由基的生成催化系统研究了EPR光谱学。比ZnMnO3更好的催化性能纳米棒。在小型立式钢琴ZnMn2O4,促进离解通过各种含氧自由基强大的JT失真,其负责更高的催化活性。

著录项

相似文献

  • 外文文献
  • 中文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号