A new compound of Cs(ATZ) was synthesized by reaction of CsOH aqueous solution with 5-aminotetrezole. This compound was identified by C, H and N elemental analysis and quantitative analysis of Cs atom. The molecular f...A new compound of Cs(ATZ) was synthesized by reaction of CsOH aqueous solution with 5-aminotetrezole. This compound was identified by C, H and N elemental analysis and quantitative analysis of Cs atom. The molecular formula is Cs(ATZ). The physicochemical properties were characterized by FT-IR, Raman spectroscopy and X-ray power diffraction and the peaks of FT-IR were also assigned.展开更多
A well-designed 3D metal-organic framework with accessible Lewis acid-base sites,[Zn_(2)(PZDC)(1/2ATZ)_(2)(H_(2)O)2·2.5H_(2)O](H_(2)PZDC=3,5-pyrazoledicarboxylic acid,5-ATZ=5-aminoterazole)abbreviated as Zn(PZDC)...A well-designed 3D metal-organic framework with accessible Lewis acid-base sites,[Zn_(2)(PZDC)(1/2ATZ)_(2)(H_(2)O)2·2.5H_(2)O](H_(2)PZDC=3,5-pyrazoledicarboxylic acid,5-ATZ=5-aminoterazole)abbreviated as Zn(PZDC)(ATZ),was successfully prepared by incorporating zinc(II)ions,3,5-pyrazoledicarboxylic acid and nitrogen-rich 5-aminoterazole.The existence of abundant Lewis bases can increase the chemical affinity to carbon dioxide,thus resulting in their high CO_(2)capture ability.Additionally,the heterogeneous Zn(PZDC)(ATZ)catalyst facilitated the CO_(2)coupling reaction of various epoxides into cyclic carbonates with the aid of Bu_(4)NBr under solvent-free conditions(90℃,1 MPa,6 h);besides,a high TON(131.0)and TOF(21.8 h^(−1))of propylene carbonates were obtained.Furthermore,the Zn(PZDC)(ATZ)catalyst also showed good chemical stability and recyclability for seven cycles without a significant catalytic loss.What’s more,a plausible catalytic mechanism of synergistic effects derived from Zn(PZDC)(ATZ)/Bu4NBr catalysts for CO_(2)conversion to cyclic carbonate was proposed.展开更多
This study developed a novel heterogeneous Vis-Photo+Fenton-like system by integrating visible-light-responsive Co_(3)O_(4)/TiO_(2) photocatalysis with peroxymonosulfate(PMS)activation for efficient atrazine(ATZ)degra...This study developed a novel heterogeneous Vis-Photo+Fenton-like system by integrating visible-light-responsive Co_(3)O_(4)/TiO_(2) photocatalysis with peroxymonosulfate(PMS)activation for efficient atrazine(ATZ)degradation.The synergistic process achieved complete ATZ removal within 60 min under near-neutral pH(6.9),outperform-ing individual Fenton-like(39%)and photocatalytic(24%)processes.Key factors influencing the degradation efficiency included light sources(UV>visible),pH(optimal at 6.9),catalyst dosage(0.01 g Co_(3)O_(4)/TiO_(2)),and PMS:ATZ molar ratio(1:2).The system exhibited a synergistic coefficient of 5.03(degradation)and 1.97(miner-alization),attributed to enhanced radical generation and accelerated Co^(3+)/Co^(2+)redox cycling through photoin-duced electron transfer.Intermediate analysis revealed dealkylation,dechlorination,and oxidation pathways,with reduced toxicity of by-products(e.g.,CEAT,CIAT)confirmed by ecotoxicity assessments.The mineralization efficiency(Vis-Photo+Fenton-like)reached 83.1%,significantly higher than that of standalone processes(Fenton-like:43.2%;photocatalysis:30.5%).The catalyst demonstrated excellent stability(nearly 90%recov-ery,<1μg/L Co leaching)and practical applicability.This study provides an efficient,sludge-free,and solar-compatible strategy for eliminating persistent herbicides in water treatment.展开更多
从8月初伯纳乌杯点球建功,率领拜仁抢走皇马百年庆典的荣光,到当月中旬被《踢球者》评为年度德国足球先生;从德甲第2轮为新东家打入首粒联赛进球,到冠军联赛也为拜仁攻陷城门;从9月8日欧洲杯预选赛首轮为德国队首开纪录,到联赛梅开二度...从8月初伯纳乌杯点球建功,率领拜仁抢走皇马百年庆典的荣光,到当月中旬被《踢球者》评为年度德国足球先生;从德甲第2轮为新东家打入首粒联赛进球,到冠军联赛也为拜仁攻陷城门;从9月8日欧洲杯预选赛首轮为德国队首开纪录,到联赛梅开二度使拜仁位居榜首(失去他的勒沃库森却是一片惨淡)……新赛季以来,巴拉克可谓遍地开花,以风暴般的力量摧毁对手的同时,也征服着慕尼黑、德国乃至欧洲。一时间诸如"慕尼黑的上帝"、"伟大的斗士"、"中场王"等赞誉从天而降,纷纷加在这位德国足球新皇帝身上,集万千宠爱于一身。不只球迷、队友和主帅对他大加赞扬,昔日德国足坛的名宿们也坐不住了,前有内策尔出来妙笔生花,然后"先皇"贝肯鲍尔也开金口,称巴拉克会比齐达内做得更好,将成为欧洲之王。红得已经发紫的巴拉克在球场上的表现已经尽人皆知,那么他的生活无疑更是人们想了解的话题,现在就一起来看他A TO Z 的自述吧,以首个字母排序的单词可是德语的——展开更多
文摘A new compound of Cs(ATZ) was synthesized by reaction of CsOH aqueous solution with 5-aminotetrezole. This compound was identified by C, H and N elemental analysis and quantitative analysis of Cs atom. The molecular formula is Cs(ATZ). The physicochemical properties were characterized by FT-IR, Raman spectroscopy and X-ray power diffraction and the peaks of FT-IR were also assigned.
基金the National Natural Science Foundation of China(21673060)the State Key Lab of Urban Water Resource and Environment of Harbin Institute of Technology(HIT2017DX10).
文摘A well-designed 3D metal-organic framework with accessible Lewis acid-base sites,[Zn_(2)(PZDC)(1/2ATZ)_(2)(H_(2)O)2·2.5H_(2)O](H_(2)PZDC=3,5-pyrazoledicarboxylic acid,5-ATZ=5-aminoterazole)abbreviated as Zn(PZDC)(ATZ),was successfully prepared by incorporating zinc(II)ions,3,5-pyrazoledicarboxylic acid and nitrogen-rich 5-aminoterazole.The existence of abundant Lewis bases can increase the chemical affinity to carbon dioxide,thus resulting in their high CO_(2)capture ability.Additionally,the heterogeneous Zn(PZDC)(ATZ)catalyst facilitated the CO_(2)coupling reaction of various epoxides into cyclic carbonates with the aid of Bu_(4)NBr under solvent-free conditions(90℃,1 MPa,6 h);besides,a high TON(131.0)and TOF(21.8 h^(−1))of propylene carbonates were obtained.Furthermore,the Zn(PZDC)(ATZ)catalyst also showed good chemical stability and recyclability for seven cycles without a significant catalytic loss.What’s more,a plausible catalytic mechanism of synergistic effects derived from Zn(PZDC)(ATZ)/Bu4NBr catalysts for CO_(2)conversion to cyclic carbonate was proposed.
基金supported by the Financial Supports of the National Natural Science Foundation of China(Nos.51508056,52370030 and 42007352)the Chongqing Postgraduate Joint Training Base Project(No.JDLHPYJD2022005)the special fund of Henan Key Labora-tory of Water Pollution Control and Rehabilitation Technology(No.CJSZ2024001).
文摘This study developed a novel heterogeneous Vis-Photo+Fenton-like system by integrating visible-light-responsive Co_(3)O_(4)/TiO_(2) photocatalysis with peroxymonosulfate(PMS)activation for efficient atrazine(ATZ)degradation.The synergistic process achieved complete ATZ removal within 60 min under near-neutral pH(6.9),outperform-ing individual Fenton-like(39%)and photocatalytic(24%)processes.Key factors influencing the degradation efficiency included light sources(UV>visible),pH(optimal at 6.9),catalyst dosage(0.01 g Co_(3)O_(4)/TiO_(2)),and PMS:ATZ molar ratio(1:2).The system exhibited a synergistic coefficient of 5.03(degradation)and 1.97(miner-alization),attributed to enhanced radical generation and accelerated Co^(3+)/Co^(2+)redox cycling through photoin-duced electron transfer.Intermediate analysis revealed dealkylation,dechlorination,and oxidation pathways,with reduced toxicity of by-products(e.g.,CEAT,CIAT)confirmed by ecotoxicity assessments.The mineralization efficiency(Vis-Photo+Fenton-like)reached 83.1%,significantly higher than that of standalone processes(Fenton-like:43.2%;photocatalysis:30.5%).The catalyst demonstrated excellent stability(nearly 90%recov-ery,<1μg/L Co leaching)and practical applicability.This study provides an efficient,sludge-free,and solar-compatible strategy for eliminating persistent herbicides in water treatment.
文摘从8月初伯纳乌杯点球建功,率领拜仁抢走皇马百年庆典的荣光,到当月中旬被《踢球者》评为年度德国足球先生;从德甲第2轮为新东家打入首粒联赛进球,到冠军联赛也为拜仁攻陷城门;从9月8日欧洲杯预选赛首轮为德国队首开纪录,到联赛梅开二度使拜仁位居榜首(失去他的勒沃库森却是一片惨淡)……新赛季以来,巴拉克可谓遍地开花,以风暴般的力量摧毁对手的同时,也征服着慕尼黑、德国乃至欧洲。一时间诸如"慕尼黑的上帝"、"伟大的斗士"、"中场王"等赞誉从天而降,纷纷加在这位德国足球新皇帝身上,集万千宠爱于一身。不只球迷、队友和主帅对他大加赞扬,昔日德国足坛的名宿们也坐不住了,前有内策尔出来妙笔生花,然后"先皇"贝肯鲍尔也开金口,称巴拉克会比齐达内做得更好,将成为欧洲之王。红得已经发紫的巴拉克在球场上的表现已经尽人皆知,那么他的生活无疑更是人们想了解的话题,现在就一起来看他A TO Z 的自述吧,以首个字母排序的单词可是德语的——
