Synthesis of a BiFeO<sub>3</sub> nanowire-reduced graphene oxide based magnetically separable nanocatalyst and its versatile catalytic activity towards multiple organic reactions
time synthesis of a BiFeO3 nanowire-reduced graphene oxide nanocatalyst (BFO–RGO) using a hydrothermal method. The BFO–RGO nanocatalyst exhibited excellent catalyticactivity towards Biginelli reaction, Click reaction, styrene epoxidation, 4-NP reduction and a herbicide, (trifluralin) reduction. The novelty of this catalyst lies in its highcatalytic efficiency towards many organic reactions, easy
Using <sup>19</sup>F NMR Spectroscopy to Determine Trifluralin Binding to Soil
作者:Mark Strynar、Jerzy Dec、Alan Benesi、A. Daniel Jones、Roderick A. Fry、Jean-Marc Bollag
DOI:10.1021/es0403110
日期:2004.12.1
investigate the nature of soil-bound trifluralin residues, 14C-labeled herbicide was incubated for 7 weeks with four soils under anoxic conditions. As determined by radiocounting, trifluralin binding ranged between 10 and 53% of the initial 14C depending on the soil tested. 19F NMR analyses of the methanol extracts and different fractions of the extracted soil suggested that bound residue formation largely
三氟拉林是广泛用于控制多种作物中阔叶杂草的除草剂。它与土壤的结合可能导致除草活性的重大损失和延迟的污染问题。为了研究结合在土壤中的三氟拉林残留物的性质,将14C标记的除草剂在缺氧条件下与四种土壤温育7周。如通过放射计数所确定的,取决于所测试的土壤,三氟拉林结合的范围为初始14 C的10%至53%。甲醇提取物和提取土壤的不同部分的19 F NMR分析表明,结合残留物的形成很大程度上涉及除草剂的代谢产物减少。零价铁(Fe-TR)还原三氟拉林的2,6-二氨基产物和1,2-二氨基三氟拉林衍生物(TR6)的标准品与富里酸(FA)形成共价键,如在3周的接触时间内定期采集的19F NMR谱所表明的。在短的接触时间下,TR6和Fe-TR与FA形成弱的物理键,因为自旋晶格弛豫时间(T1)从TR6或Fe-TR的1300-1831 ms范围减少(在没有FA的情况下分析到)。对于TR6 / FA或Fe-TR /
Synthesis of a Ni<sub>0.8</sub>Zn<sub>0.2</sub>Fe<sub>2</sub>O<sub>4</sub>–RGO nanocomposite: an excellent magnetically separable catalyst for dye degradation and microwave absorber
作者:D. Moitra、B. K. Ghosh、M. Chandel、R. K. Jani、M. K. Patra、S. R. Vadera、N. N. Ghosh
DOI:10.1039/c5ra26634c
日期:——
A Ni0.8Zn0.2Fe2O4 reduced graphene oxide nanocomposite has been synthesized by a simple ‘in situ co-precipitation’ technique.