Results 11 to 20 of about 12,033 (122)
ABSTRACT With the development of industry, fluoride pollution has become increasingly severe. Transition metal phosphides, featuring excellent electrical conductivity and electrochemical stability, are promising electrode materials for capacitive deionization (CDI).
Pengwen Xiao +9 more
wiley +1 more source
采用CaCl2对浒苔进行处理,研制出浒苔基吸附剂。通过静态吸附实验考察了该吸附剂对结晶紫的吸附性能。并进行了表面形貌和官能团分析。研究结果表明,吸附剂投加量、pH、吸附时间和温度对吸附性能影响较大。吸附过程符合伪二级动力学方程和Langmuir等温吸附模式,为快速吸附和单分子层吸附,其最大吸附量为1 000 mg/g。吸附机理是染料分子与浒苔细胞壁里纤维素和果胶中的—OH、—C—O等官能团之间存在静电吸引、氢键作用以及范德华力的作用。
钟倩倩 +4 more
doaj
ABSTRACT The commercialization of lithium‐sulfur batteries (LSBs) faces dual challenges of sluggish sulfur redox kinetics and lithium polysulfides (LiPSs) shuttling. Herein, we demonstrate a synergistic strategy combining multidimensional structural confinement with d‐band center modulation to simultaneously suppress LiPSs diffusion and catalyze ...
Shibo Rong +8 more
wiley +1 more source
通过振荡吸附实验,研究了坡缕石-钢渣颗粒吸附剂的制备方法及颗粒吸附剂在含铜溶液中的吸附特性。结果表明,制备颗粒吸附剂的优化条件为:m(坡缕石):m(钢渣)=1001:00,在400℃下焙烧2 h。颗粒吸附剂对铜的吸附容量高达169.5mg/g,吸附等温线属Langmuir型。吸附剂的再生实验表明:再生后吸附剂的吸附量下降平缓,可以重复使用。
羊依金 +3 more
doaj
以农林废弃物水稻秸秆作为生物炭原料,在400、550 ℃的热解温度下制备生物炭,探究CaCl2、MgCl2改性生物炭(CBC-400、CBC-550、MBC-400、MBC-550)对磷的吸附性能。研究结果显示,MBC和CBC对磷的吸附特点不同:MBC对磷的吸附速率慢但吸附量大,而CBC的吸附速率快但吸附量小。等温吸附实验结果显示,MBC-400和MBC-550的饱和吸附量分别为67.08、60.17 mg/g,高于CBC-400和CBC-550(5.97、18.51 mg/g)。根据吸附动力学结果可知,
黄烽明 +4 more
doaj
ABSTRACT Nickel‐based materials are highly remarkable as promising transition metal catalysts for the electrochemical hydrogen evolution reaction (HER) in alkaline electrolytes. However, their electrochemical performance is limited by an unfavorable d‐band energy (Ed) level. Herein, we showcase an effective lattice‐strain strategy to modulate the Ed of
Shengjue Deng +10 more
wiley +1 more source
从动力学与热力学角度研究了膨润土浓度、吸附时间、温度对膨润土吸附Pb(Ⅱ)性能的影响。结果表明,膨润土对Pb(Ⅱ)具有较强的吸附性能。吸附速率k为0.09 g/(mg·h),服从假二级吸附动力学方程;吸附率随膨润土浓度、温度的升高而提高;膨润土对Pb(Ⅱ)的吸附符合Langmuir模型;该吸附是一个自发、吸热,物理表面吸附和化学离子交换吸附并存的吸附过程。
郭春芳
doaj
ABSTRACT Methanol‐assisted hydrogen generation reduces energy consumption while maintaining high hydrogen productivity. However, constructing bifunctional catalysts with high hydrogen evolution reaction (HER) activity, CO tolerance, and long‐term stability remains challenging.
Xiaoyu Zheng +5 more
wiley +1 more source
以天然铁矾土为原料制备得到改性铁矾土除砷吸附剂,考察了反应时间、pH、竞争离子对该吸附剂吸附砷效能的影响,并对吸附机理进行了分析。结果表明:该吸附剂对废水中的砷具有较高的吸附效能。在反应时间为60 min内,该吸附剂对砷的吸附呈快速上升趋势;该吸附剂对砷的饱和吸附量可达19.2 mg/g;酸性与中性的pH环境有利于砷的吸附去除;废水中的PO43-与砷存在较强的竞争吸附,而SO42-、NO3-与砷的竞争吸附作用较小。
刘兴旺, 陈建宏, 胡晞
doaj
ABSTRACT Germanium is a critical dispersed metal, yet sustainable recovery from dilute solutions is limited by sorbents that are difficult to regenerate and operate in continuous mode. Here, we fabricate a regenerable 3D‐printed hydrogel monolith (3D‐ATO‐GS) by integrating hydroxyl‐rich amorphous TiO2 nanoparticles into an alginate/gelatin scaffold ...
Wenhuan Guo +6 more
wiley +1 more source

