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| 1 | Potential-tuned selective electrosynthesis of azoxy-,azoand amino-aromatics over a CoP nanosheet cathode显示文摘Azoxy-, azo-and amino-aromatics are among the most widely used building blocks in materials science pharmaceuticals and synthetic chemistry, but their controllable and green synthesis has not yet been well established. Herein, a facile potential-tuned electrosynthesis of azoxy-, azo-and amino-aromatics via aqueous selective reduction of nitroarene feedstocks over a CoP nanosheet cathode is developed. A series of azoxy-, azo-and amino-compounds with excellent selectivity, good functional group tolerance and high yields are produced by applying different bias input. The synthetically significant and challenging asymmetric azoxy-aromatics can be controllably synthesized in moderate to good yields. The use of water as the hydrogen source makes this strategy remarkably fascinating and promising. In addition, deuterated aromatic amines with a high deuterium content can be readily obtained by using D2O. By pairing with anodic oxidation of aliphatic amines to nitriles, synthetically useful building blocks can be simultaneously produced in a CoP||Ni2 P two-electrode electrolyzer. Only 1.25 V is required to achieve a current density of 20 mA cm-2, which is much lower than that of overall water splitting(1.70 V). The paired oxidation and reduction reactions can also be driven using a 1.5 V battery to synthesize nitrile and azoxybenzene with good yields and selectivity, further emphasizing the flexibility and controllability of our method. This work paves the way for a promising approach to the green synthesis of valuable chemicals through potential-controlled electrosynthesis. | Xiaodan Chong Cuibo Liu Yi Huang Chenqi Huang Bin Zhang | 2020 | National Science Review2020,7,2: | 4 |
| 2 | Sulfur Vacancy-Promoted Highly Selective Electrosynthesis of Functionalized Aminoarenes via Transfer Hydrogenation of Nitroarenes with H_(2)O over a Co_(3)S_(4−x) Nanosheet Cathode显示文摘Developing a selective hydrogenation strategy over a low-cost electrocatalyst,especially with an inexpensive and safe hydrogen source for efficient synthesis of aminoareneswith fragile functional groups,is extremely desirable.Herein,using H_(2)O as the hydrogen source,Ti mesh-supported Co_(3)S_(4)ultrathin nanosheets with sulfur vacancies(denoted as Co_(3)S_(4−x)NS)have been demonstrated to be a highly efficient cathode for selective transfer hydrogenation of nitroarenes to corresponding aminoarenes at low potential.D_(2)O-labeling experiments confirmed the hydrogen origin.Without sulfur vacancies,the products were a mixture of aminoarenes and azoxyareneswith lowselectivity.This method can deliver a variety of aminoarenes with outstanding selectivity and excellent functional group compatibility with highly reducible groups(e.g.,C–I,C–Br,C=O,C=C,C=N,C≡N,and C≡C).The experimental and theoretical results have revealed that sulfur vacancies can enhance the selective specific adsorption of the nitro group and promote intrinsic activity to form active hydrogen from water electrolysis,thus resulting in high selectivity and outstanding fragile functional groups tolerance. | Yige Zhao Cuibo Liu Changhong Wang Xiaodan Chong Bin Zhang | 2021 | CCS Chemistry2021,3,1: | 1 |
| 3 | Water-soluble Glucose-Functionalized Cobalt(III)Complex as Efficient Electrocatalyts for Hydrogen Evolution in Neutral Condition显示文摘 | Xuguang Yin Cuibo Liu Sifei Zhuo | 2015 | Dalton Transactions2015,,44: | 1 |
| 4 | Mechanistic insight into the controlled synthesis of metal phosphide catalysts from annealing of metal oxides with sodium hypophosphite显示文摘Understanding and manipulating synthetic progress for precisely controlling the components and defects of nanomaterials is an important and challenging task in materials synthesis and nanocatalysis.Metal phosphides(MPs)have been explored as cheap advanced materials in various catalytic fields.MP materials are usually synthesized through gas-solid phosphorization reaction in a trial-to-error manner,but their formation mechanism and the origin of controlled synthesis remain unclear.Here,we combine in situ thermogravimetrc analysis-mass spectrometry(TG-MS)and quasi-in situ X-ray powder diffraction(XRD)analysis to probe the transformation mechanism from metal oxides(MOs)to MPs during the phosphorization process mediated by hypophosphite.Temperature,time,and the amount of hypophosphite are revealed as the driven forces while oxophilicity and crystallinity as the impeded forces,simultaneously control the component and defect level of a series of MP(M=Ni,Co,W,Mo,and Nb).The as-obtained WO2.9/WP is proved to be an efficient Z-scheme photocatalyst for oxidative coupling of methane with the total C2+production and C2H4 selectivity in C2+products reaching 10.75 pmolg-1 and 98.25%.Our work provides a fundamental understanding of the phosphorization treatment and thereby guides a viable synthetic route to the controlled synthesis of MOx-δ,MP,MOx-δ/MP,and MP/M heterostructured materials. | Fanpeng Chen Bohang Zhao Mengyao Sun Cuibo Liu Yanmei Shi Yifu Yu Bin Zhang | 2022 | Nano Research2022,15,12: | 0 |
| 5 | Synthesis of ammonia via an electroreduction removal of NO from exhausted gas:an upgrading to N2 fixation显示文摘Ammonia is an essential chemical substance with important applications in industrial productions to fabricate fertilizers or serve as a vital energy storage medium[1].The large scale synthesis of ammonia mainly relies on the Haber-Bosch process,where N2is reduced into NH3by H2under300–500°C and 200–300 atm,over iron or ruthenium-based catalysts.Such extreme conditions require a huge input of energy.About 1.4%of the energy consumed by mankind every year was invested in this process[2]. | Cuibo Liu Yuting Wang Bin Zhang | 2020 | Science China Chemistry2020,63,9: | 0 |
| 6 | Multidisciplinary Treatment for Severe Secondary Raynaud’s Phenomenon:A Case Report显示文摘Raynaud’s phenomenon is a symptom complex manifested as intermittent fingertip ischemia caused by cold or other sympathetic drivers.Secondary Raynaud’s phenomenon is often more severe and could even lead to finger ulceration,making it particularly complicated to treat.We describe a case of severe Raynaud’s phenomenon secondary to subclinical hypothyroidism lasting for more than 6 hours in a 65-year-old woman.The patient was also diagnosed with hypothyroidism,epilepsy,and secondary soft tissue infection of the right middle and ring fingers.After careful multidisciplinary consultation and discussion,the patient received vasodilation,anticoagulation,thyroxine supplementation,stellate ganglion block,hyperbaric oxygen therapy and debridement.The patient responded well to the medication,avoiding amputation or obviously dysfunction.Multidisciplinary team gathering the doctors from different departments proposes appropriate strategies for patients with severe Raynaud’s phenomenon and could improve the prognosis and satisfaction of patient effectively. | Cuibo Leng Guanjun Lin Hong Cao Zijia Liu | 2022 | Chinese Medical Sciences Journal2022,37,4: | 0 |