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Sustainable preparation of graphene-analogue boron nitride by ball-milling for adsorption of organic pollutants

Chinese Journal of Chemical Engineering 2022年第2期35卷 73-81页

作者： Haofeng Wu Yanhong Chao Yan Jin duanjian tao Xiaowei Li Jing Luo Guohua Xia Linhua Zhu Wenshuai Zhu School of Pharmacy Jiangsu UniversityZhenjiang 212013China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022China School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang 212013China Key Laboratory of Tropical Medicinal Plant Chemistry of Education Hainan Normal UniversityHaikou 571158China

The method of fabricating low-cost adsorbents with high activity and durability via a convenient and ecofriendly procedure is of great importance to wastewater treatment. Herein, a high-efficient mechanical exfoliation strategy was proposed to facilely prepare few-layered graphene-analogue boron nitride(BN) via a one-step non-organic solvent assisted wet ball mill procedure. Ball-milling treatment increased the specific surface area of BN 3.5-fold by reducing the thickness to ~3 layers with 45 min. The exfoliated BN exhibited strikingly improved sorption performance to organic contaminants with around 124% and 116% increased removal efficiency respectively for oxytetracycline(OTC) and Rhodamine B(RhB) as compared to the bulk BN. Batches sorption experiments showed that the sorption processes were thermodynamic endothermic, and well fitted to pseudo-second-order kinetic model and Freundlich isotherm equation. The π-π stacking interaction, hydrophobic effect and electrostatic interaction were proposed as the dominated sorption mechanism. In addition, no significant decline in adsorptive removal ability for the sorbent after 5 times recycling. The results indicate that the ball-milling exfoliation is a fast, green,sustainable and promising strategy for synthesis of highly potent BN based two-dimensional layered adsorbents.

关键词： Boron nitride Ball mill Exfoliation Adsorption Water treatment

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Few-layered hexagonal boron nitride nanosheets stabilized Pt NPs for oxidation promoted adsorptive desulfurization of fuel oil

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Green Energy & Environment 2024年第3期9卷 495-506页

作者： Peiwen Wu Xin Song Linlin Chen Lianwen He Yingcheng Wu duanjian tao Jing He Chang Deng Linjie Lu Yanhong Chao Mingqing Hua Wenshuai Zhu School of Chemistry and Chemical Engineering Jiangsu UniversityZhenjiang212013China College of Chemical Engineering and Environment State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing102249China College of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang330022China College of Science State Key Laboratory of Heavy Oil ProcessingChina University of Petroleum-BeijingBeijing102249China

A few-layered hexagonal boron nitride nanosheets stabilized platinum nanoparticles(Pt/h-BNNS)is engineered for oxidation-promoted adsorptive desulfurization(OPADS)of fuel *** was found that the few-layered structure and the defective sites of h-BNNS not only are beneficial to the stabilization of Pt NPs but also favor the adsorption of aromatic *** employing Pt/h-BNNS with a Pt loading amount of 1.19 wt%as the active adsorbent and air as an oxidant,a 98.0%sulfur removal over dibenzothiophene(DBT)is achieved along with a total conversion of the DBT to the corresponding sulfones(DBTO_(2)).Detailed experiments show that the excellent desulfurization activity originates from the few-layered structure of h-BNNS and the high catalytic activity of Pt *** addition,the OPADS system with Pt/h-BNNS as the active adsorbent shows remarkable stability in desulfurization performance with the existence of different interferents such as olefin,and aromatic ***,the Pt/h-BNNS can be recycled 12 times without a significant decrease in desulfurization ***,a process flow diagram is proposed for deep desulfurization of fuel oil and recovery of high value-added products,which would promote the industrial application of such OPADS strategy.

关键词： Desulfurization Adsorption Catalytic oxidation Active adsorbent Dibenzothiophene

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Co-N-C催化剂的制备及“一锅法”合成N-亚苄基苯胺

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化工学报 2020年第11期71卷 5016-5024页

作者：冷杰罗晶晶宋崇虎周言李章敏陶端健江西师范大学化学化工学院江西南昌330022

以甲酰胺为氮源和碳源,乙酸钴为钴源,采用预先缩合/高温焙烧两步法制备了一系列Co-N-C催化剂,利用XRD、TEM、N2吸附-脱附以及XPS等表征了催化剂结构,考察了催化剂用于硝基苯与苯甲醇“一锅法”合成N-亚苄基苯胺的催化性能及其稳定性。... 详细信息

以甲酰胺为氮源和碳源,乙酸钴为钴源,采用预先缩合/高温焙烧两步法制备了一系列Co-N-C催化剂,利用XRD、TEM、N2吸附-脱附以及XPS等表征了催化剂结构,考察了催化剂用于硝基苯与苯甲醇“一锅法”合成N-亚苄基苯胺的催化性能及其稳定性。结果表明,焙烧温度和掺杂氮元素对Co-N-C催化剂性能影响显著,催化剂Co-N-C/800具有最好的催化性能,0.6MPa氮气气氛下,温度140℃,反应12h,硝基苯转化率达99%,N-亚苄基苯胺选择性达99%,催化剂重复使用5次,其活性无明显下降。

关键词：碳材料氮掺杂纳米结构催化合成 N-亚苄基苯胺一锅法

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局部枸橼酸抗凝对血液透析伴高危出血风险患者血管内皮舒张功能的影响观察

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药品评价 2019年第20期16卷 1-2,14页

作者：付双双梁玉梅欧阳沙西凌文涛杨伊雅颜晶刘抗寒殷薇陈莹段建秀周南肖春霞湖南省人民医院(湖南师范大学附属第一医院)肾内科

目的:探究局部枸橼酸抗凝对血液透析伴高危出血风险患者内皮舒张功能的影响。方法:选取我院2017年10月至2019年03月60例血液透析伴高危出血风险患者,采用数字随机法将患者分为对照组和观察组,每组各30例,对照组采用肝素抗凝,观察组采用... 详细信息

目的:探究局部枸橼酸抗凝对血液透析伴高危出血风险患者内皮舒张功能的影响。方法:选取我院2017年10月至2019年03月60例血液透析伴高危出血风险患者,采用数字随机法将患者分为对照组和观察组,每组各30例,对照组采用肝素抗凝,观察组采用局部枸橼酸抗凝,对比两组透析前后血管内皮舒张功能、血电解质、pH值、肾功能水平、凝血功能水平。结果:透析后观察组血管舒张功能(FMD)水平高于对照组(P0.05),透析后观察组的血肌酐(Scr)、尿素氮(BUN)水平均高于对照组(P<0.05),透析后观察组(APTT)、活化凝血时间(ACT)水平均低于对照组(P<0.05)。结论:局部枸橼酸抗凝有助于保持患者血管内皮舒张功能的相对稳定,有效减小血液透析对于患者血管内皮功能的损伤。

关键词：局部枸橼酸抗凝血液透析高危出血血管内皮舒张功能

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