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| 1 | Hydrogen-incorporated vanadium dioxide nanosheets enable efficient uranium confinement and photoreduction显示文摘Photocatalytic reduction of U(VI)represents a novel and effective manner for the removal of U(VI)pollutant from radioactive wastewater.Herein,we successfully incorporated hydrogen into VO_(2)nanosheets,which strengthened the interaction between VO_(2)and U(VI),thereby achieving a highly active and stable photocatalyst for U(VI)reduction.With the increase of H content in hydric VO_(2)(H_(x)-VO_(2))nanosheets,the bandgap shrank from 2.29 to 1.66 eV,whereas the position of conduction bands remained more negative than the reduction potential of U(VI)/U(IV)(0.41 V vs.NHE).When irradiated by simulated sunlight,the U(VI)removal efficiency over H0.613-VO_(2)nanosheets reached up to 95.4%within 90 min,which largely outperformed 28.3%of pristine VO_(2)nanosheets.The mechanistic study demonstrated that the hydroxylated surface gave rise to the balanced O confinement sites in VO_(2)(011),leading to the stabilized adsorption configuration and increased binding strength of UO_(2)^(2+)on H_(x)-VO_(2)nanosheets. | Huanhuan Liu Jia Lei Jiali Chen Ye Li Changyao Gong Shangjie Yang Yamin Zheng Ning Lu Yan Liu Wenkun Zhu Rong He | 2022 | Nano Research2022，15，4： | 1 |
| 2 | In-situ oxidized tungsten disulfide nanosheets achieve ultrafast photocatalytic extraction of uranium through hydroxyl-mediated binding and reduction显示文摘Photoreduction of hexavalent uranium(U(VI))by semiconductor provides a novel and effective avenue for uranium extraction.Unfortunately,the traditional metal oxide and sulfide semiconductors suffer from the lack of confinement sites to U(VI),which resulted in the long period(~1 h)to achieve a high U(VI)extraction efficiency of>90%.Herein,we successfully constructed WS2 nanosheets and created in-situ oxidized domains on the surfaces(O-WS_(2))to promote the uranium extraction and the corresponding removal kinetics.In this system,the O_(7.7-)WS_(2) nanosheets exhibited a considerable U(VI)extraction efficiency of>90%within 20 min in 8 mg·L^(–1) U(VI)-containing solution,which represented the highly efficient U(VI)removal performance.In 200 mg·L^(–1) U(VI)-containing solution,the O7.7-WS2 nanosheets exhibited an extraction capacity of 652.4 mg·g^(-1).The mechanism study revealed that the oxidized surface tended to trap hydrogen atom and in-situ form hydroxyl groups in defect sites.Evidenced by a series of experiment,such as kinetic isotope effect,1H nuclear magnetic resonance(NMR)spectra,and X-ray absorption near-edge structure(XANES)spectra,the in-situ formed hydroxyl groups participated in the uranium reduction,which dramatically enhanced uranium extraction kinetics and efficiency. | Huanhuan Liu Jia Lei Changyao Gong Ye Li Huimei Chen Jiali Chen Fengchun Wen Dengjiang Fu Yan Liu Wenkun Zhu Rong He | 2022 | Nano Research2022，15，10： | 0 |
| 3 | Alleviation of Cadmium Toxicity to Medicago Truncatula by AMF Involves the Changes of Cd Speciation in Rhizosphere Soil and Subcellular Distribution显示文摘Arbuscular mycorrhizal fungi(AMF)can improve plant tolerance to several abiotic stresses,including heavy metals,drought or salinity exposure.However,the role of AMF in alleviation of soil cadmium(Cd)-induced toxicity to plants is still largely unknown.In this study,Cd speciation in soil and subcellular distribution of Cd were used to characterize the roles of application AM fungi in the alleviation of Cd toxicity in alfalfa plants.Our results showed that the addition of Glomus mosseae in Cd contaminated soil(10 mg/Kg)significantly increased soil pH,cation exchange capacity(CEC)and organic matter in rhizosphere soil with Medicago truncatula L.,and then account for significantly decreased contents of exchangeable and carbonate-bounded Cd speciation in rhizosphere soil,indicating alleviation of plant toxicity by reduction of bioavailable fractions of Cd.Although there is no significant difference found in Cd accumulation by roots and shoots respectively between Cd and AM-Cd treatments,more portion of Cd was recorded compartmentalization in cell wall fraction of both root and shoot in treatment of Cd with AM application,indicating alleviation of Cd toxicity to plant cell.Herein,application of AM fungi in Cd treatments performed to inhibit the appearance of Cd toxicity symptoms,including the improvement of leaf electrolyte leakage,root elongation,seedling growth and biomass.This information provides a clearer understanding of detoxification strategy of AM fungi on Cd behavior with development and stabilization of soil structure and subcellular distribution of plant. | Yuying Jiang Renhua Huang Lei Jiang Ke Chen Wenkun Zhu | 2021 | Phyton-International Journal of Experimental Botany2021，90，2： | 0 |
| 4 | Cell-type-specific genes associated with cortical structural abnormalities in pediatric bipolar disorder显示文摘Background Pediatric bipolar disorder(PBD)has been proven to be related to abnormal brain structural connectivity,but how the abnormalities in PBD correlate with gene expression is debated.Objective This study aims at identification of cell-type-specific gene modules based on cortical structural differences in PBD.Methods Morphometric similarity networks(MSN)were computed as a marker of interareal cortical connectivity based on MRI data from 102 participants(59 patients and 43 controls).Partial least squares(PLS)regression was used to calculate MSN differences related to transcriptomic data in AHBA.The biological processes and cortical cell types associated with this gene expression profile were determined by gene enrichment tools.Results MSN analysis results demonstrated differences of cortical structure between individuals diagnosed with PBD and healthy control participants.MSN differences were spatially correlated with the PBD-related weighted genes.The weighted genes were enriched for“trans-synaptic signaling”and“regulation of ion transport”,and showed significant specific expression in excitatory and inhibitory neurons.Conclusions This study identified the genes that contributed to structural network aberrations in PBD.It was found that transcriptional changes of excitatory and inhibitory neurons might be associated with abnormal brain structural connectivity in PBD. | Wenkun Lei Qian Xiao Chun Wang Weijia Gao Yiwen Xiao Yingliang Dai Guangming Lu Linyan Su Yuan Zhong | 2022 | Psychoradiology2022，2，2： | 0 |
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