酸激发锌渣/偏高岭土地质聚合物的制备及催化性能

来源 :硅酸盐学报 | 被引量 : 0次 | 上传用户:amdroid_JJ
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
以锌渣和偏高岭土为原料,磷酸为激发剂制备地质聚合物(ZMG).研究原料配比对地质聚合物力学性能、物相组成、微观结构和孔径分布的影响.将所制地质聚合物应用于Fenton-like催化降解直接铜盐蓝2R模拟染料废水,系统考察了原料配比、催化剂用量、pH值、H2O2浓度对染料降解率的影响.结果 表明:锌渣占比为50%(质量分数)地质聚合物样品(ZMG-50)的7d抗压强度可达19.9 MPa;锌渣可消除地质聚合物的机械孔、改善介孔结构、提高比表面积.催化结果表明,在催化剂用量为8g/L、pH值为2.5、H2O2浓度为0.32 mmol/L的条件下,样品ZMG-50的催化性能最佳,经42 min反应后直接铜盐蓝2R染料的降解率可达96.2%,且具有良好的稳定性和重复使用性能.
其他文献
This study performed a bridge pier collar comparison for the purpose of reducing scour, while intro-ducing a new collar design. The new collar, referred to as Collar Prototype Number 3, was designed based on an equilibrium scour hole and provides a method
Surficial sediment samples collected from the recently formed fluvial delta in Lake Nasser/Nubia (Egypt and Sudan) in conjunction with data on bottom current and depth soundings are examined to interpret hydraulic-sorting processes and transport/depositio
The lower Yellow River (LYR) is a fully alluvial system with a fine-grained bed that has a high proportion of silt. Bathymetric survey data collected with a Multi-Beam Echo Sounder (MBES) from the wandering reach of the LYR indicates that the bedforms are
Sediment samples from the Gomti River basin were investigated to determine and evaluate trace metal concentrations, their biological effect, and potential ecological and human health risks for adults and children. The mean concentrations of trace metals w
Land use and land cover (LULC) changes strongly affect local hydrology and sediment yields. The current study focused on a basin in the Brazilian Amazon and had the following three objectives:(1) to perform an effective diagnosis of flow and sediment yiel
The southeastern portion of the Yangtze River Estuary (or Yangtze Estuary) was considered to be the deposition center and the mudbank of the Yangtze River Delta. As the fluvial sediment supply began to decline in the 1980s and the reduction accelerated af
Knowledge of locomotion of fish near river confluences is important for prediction of fish distribution in a river network. The flow separation zone near the confluence of a river network is a favorite habitat and feeding place for silver carp, which is o
The delivery of excessive fine sediment (particles < 2 mm in diameter) to rivers can cause serious deleterious effects to aquatic ecosystems and is widely acknowledged to be one of the leading con-tributors to the degradation of rivers globally. Despite a
基于全牛顿步和中心路径,给出了线性权互补问题的全牛顿步内点算法,并证明了该算法的可行性和多项式时间复杂度.数值实验验证了算法的有效性.
通过水热法用Cu2+置换酸活化凹凸棒石黏土(Pal)八面体阳离子实现晶格重建(Cu-Pal),过量的Cu2+经过溶液pH值调变和煅烧后,在Cu-Pal表面原位生长出氧化铜量子点(CuO QDs),从而制备出CuO QDs/Cu-Pal纳米复合材料,并将其应用于光催化固氮,考察了Cu2+用量对凹凸棒石微观形貌、光学性质和能带结构的影响.结果 表明:Cu-Pal具有更窄的带隙,将光响应范围从紫外光拓展到可见光.当Cu2+含量超过5%(质量分数)时,Cu-Pal表面的CuO QDs由于窄带隙(1.2 eV)增强