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| 1 | CO oxidation over ceria supported Au_(22) nanoclusters: Shape effect of the support显示文摘Gold(Au) nanoclusters have recently emerged as ideal models for understanding Au catalysis, because the nanosized Au particles have precise atomic numbers and uniform size. In this work, we studied for the first time the support shape effect on the catalysis of Au nanoclusters by using CO oxidation as a model reaction. Au_(22)(L^8)_6(L = 1,8-bis(diphenylphosphino) octane) nanoclusters were supported on CeO_2 rods or cubes, then pretreated at different temperatures(up to 673 K), allowing the gradual removal of the organic phosphine ligands. CO oxidation test over these differently pretreated samples shows that CeO_2 rods are much better supports than cubes for Au_(22) nanoclusters in enhancing the reaction rate. In situ IR spectroscopy coupled with CO adsorption indicates that the shape of CeO_2 support can impact the nature and quantity of exposed Au sites, as well as the efficiency of organic ligand removal. Although CeO_2 rods are helpful in exposing a greater percentage of total Au sites upon ligands removal, the percentage of active Au sites(denoted by Au d+, 0 < d < 1) is lower than that on CeO_2 cubes. The in situ extended X-ray absorption spectroscopy(EXAFS) and high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM) results show that the Au nanoclusters bound more strongly to the CeO_2 rods than to the cubes where the Au nanoclusters show more sintering. Considering the typical redox mechanism for CO oxidation over supported Au nanoclusters and nanoparticles, it is concluded that the reactivity of the lattice oxygen of CeO_2 is the determining factor for CO oxidation over Au_(22)/CeO_2. CeO_2 rods offer more reactive lattice oxygen and abundant oxygen vacancies than the cubes and thus make the rods a superior support for Au nanoclusters in catalyzing low temperature CO oxidation. | Zili Wu David R.Mullins Lawrence F.Allard Qianfan Zhang Laisheng Wang | 2018 | Chinese Chemical Letters2018，29，6： | 4 |
| 2 | Modem Logistics Monitor ing Platform Based on the Intemet of Things 显示文摘 | Wang Zhengxia Xiao Laisheng | 2010 | International Con ference on Intelligent Computation Technology and Automation2010，2，12： | 1 |
| 3 | Online multiple in-stance boosting for object detection显示文摘 | QI Zhiquan XU Yitian WANG Laisheng | 2011 | Neurocomputing2011，74，10： | 1 |
| 4 | Mechanism for enhanced degradation of clofibric acid in aqueous by catalytic ozonation over Mn Ox/SBA-15显示文摘 | Sun Qiangqiang Wang Yu Li Laisheng | 2015 | Journal of Hazardous Materials2015，286，： | 1 |
| 5 | On the stability of the solution for multiobjective generalized games with the payoffs perturbed显示文摘 | Song Qiqing Wang Laisheng | 2010 | Nonlinear Analysis2010，73，8： | 1 |
| 6 | A weighted twin support vector regression显示文摘 | Xu Yitian Wang Laisheng | 2012 | Knowledge-Based Systems2012，33，： | 1 |
| 7 | Fault diagnosis system based on Rough set theory and support vector machine 显示文摘 | Xu Yitian Wang Laisheng | 2005 | Lecture Notes in Artificial Intelligence2005，3614，： | 1 |
| 8 | Online multi-ple instance boosting for object detection 显示文摘 | QI Zhiquan XU Yitian WANG Laisheng | 2011 | Neurooom-puting2011，74，10： | 1 |
| 9 | Thermodynamic analysis and optimization of a solar-powered transcritical CO 2 power cycle for reverse osmosis desalination based on the recovery of cryogenic energy of LNG显示文摘 | Guanghui Xia Qingxuan Sun Xu Cao Jiangfeng Wang Yizhao Yu Laisheng Wang | 2013 | Energy2013，，： | 1 |
| 10 | Online multiple instance Boosting for object detection显示文摘 | QI Zhiquan XU Yitian WANG Laisheng | 2011 | Neurocomputing2011，74，10： | 1 |
| 11 | Monodispersed submicron porous silica particles functionalized with CD derivatives for chiral CEC显示文摘 | Li Laisheng Wang Yong Young D J | 2010 | Electrophoresis2010，31，2： | 1 |
| 12 | Modern Logistics Monitoring Platform Based on the Internet of Things 显示文摘 | Wang Zhengxia Xiao Laisheng | 2010 | International Conference on Intelligent Computation Technology and Automation2010，2，12： | 1 |
| 13 | USP1-regulated reciprocal differentiation of Th17 cells and Treg cells by deubiquitinating and stabilizing TAZ显示文摘The balance between inflammatory T helper type 17(Th17)and immunosuppressive regulatory T(Treg)cells is critical for maintaining immune homeostasis in the human body and is tightly regulated under healthy conditions.An increasing number of studies have reported that deubiquitinases(DUBs)play a vital role in regulating Th17-and Treg-cell differentiation.However,the biological functions of only a small fraction of DUBs in Th17-and Treg-cell differentiation are well defined.In this study,we identified ubiquitin-specific peptidase 1(USP1)as a vital regulator of CD4+T-cell differentiation.USP1 promoted Th17-cell differentiation but attenuated Treg-cell differentiation,thereby promoting the development of inflammatory diseases.Mechanistically,USP1 in CD4+T cells enhanced the activity of RORγt but promoted the proteasomal degradation of Foxp3 through deubiquitination and stabilization of TAZ in vitro and in vivo.Notably,ML323,a specific inhibitor of the USP1/UAF1 deubiquitinase complex,inhibited Th17-cell differentiation and promoted Treg-cell differentiation in vitro and in vivo,indicating that ML323 might be a promising candidate for the treatment of diseases associated with an imbalance between Th17 and Treg cells.Our study highlights the critical role of USP1 in regulating adaptive immune responses and suggests that USP1 might be a drug target for the treatment of diseases associated with an imbalance between Th17 and Treg cells. | Xiaotong Zhu Peng Wang Xiaoxia Zhan Yuping Zhang Junli Sheng Shitong He Yitian Chen Dingnai Nie Xiaolong You Haiyan Mai Qinghong Yu Laisheng Li Ligang Jie Shengfeng Hu | 2023 | Cellular & Molecular Immunology2023，20，3： | 0 |
| 14 | Electro-catalytic activity of CeO_(x) modified graphite felt for carbamazepine degradation via E-peroxone process显示文摘E-peroxone(EP)was one of the most attractive AOPs for removing refractory organic compounds from water,but the high energy consumption for in situ generating H_(2)O_(2) and its low reaction efficiency for activating O_(3) under acidic conditions made the obstacles for its practical application.In this study,cerium oxide was loaded on the surface of graphite felt(GF)by the hydrothermal method to construct the efficient electrode(CeO_(x)/GF)for mineralizing carbamazepine(CBZ)via EP process.CeO_(x)/GF was an efficient cathode,which led to 69.4%TOC removal in CeO_(x)/GF-EP process with current intensity of 10 mA in 60 min.Moreover,CeO_(x)/GF had the flexible application in the pH range from 5.0 to 9.0,TOC removal had no obvious decline with decrease of pH.Comparative characterizations showed that CeO_(x)could enhance surface hydrophilicity and reduce the charge-transfer resistance of GF.About 5.4 mg/L H_(2)O_(2) generated in CeO_(x)/GF-EP process,which was 2.1 times as that in GF-EP process.The greater ozone utility was also found in CeO_(x)/GF-EP process.More O_(3) was activated into hydroxyl radicals,which accounted for the mineralization of CBZ.An interfacial electron transfer process was revealed,which involved the function of oxygen vacancies and Ce^(3+)/Ce^(4+)redox cycle.CeO_(x)/GF had the good recycling property in fifth times'use. | Xinyu Wang Ye Jin Weirui Chen Ruini Zou Jinxin Xie Yiming Tang Xukai Li Laisheng Li | 2021 | Frontiers of Environmental Science & Engineering2021，15，6： | 0 |
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