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High concentration of Ti^(3+)in C-TiO_(x)nanosheets boosting efficient photodegradation

Science China(Technological Sciences) 2025年第3期68卷 156-166页

作者： Chongbei WU Xuan LI Haibin WANG Jiaxin TANG Shuai WEI Yuanyuan WU Aobing WANG Jizhou JIANG Hebei Key Laboratory of Man-machine Environmental Thermal Control Technology and Equipment Hebei Vocational University of Technology and EngineeringXingtai054000China School of Materials Science and Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan430205China

Semiconductor photocatalysis holds significant promise for addressing dye-pollution in ***,the efficiency of photocatalytic water purification is constrained by the weak light absorption capacity and low active site distribution of *** a bottom-up approach,carbon-doped TiO_(x)(C-TiO_(x))nanosheets with high concentrations of Ti^(3+)active sites were fabricated by etching the Al element in Ti_(3)Ai C_(2)with H_(2)O_(2).Experimental evidence demonstrates that the optimal C-TiO_(x)nanosheets exhibit high activity for the photocatalytic degradation of methylene blue,achieving a degradation rate of 100%within 50 *** introduction of carbon into the C-TiO_(x)nanosheets induces a red shift in the absorption edge,boosting the migration of photo-generated charge ***,there is a significant correlation between the concentration of Ti^(3+)active sites and the density of oxygen vacancies in the C-TiO_(x)nanosheets,which synergistically influence the photocatalytic degradation performance of MB dye wastewater.

关键词： bottom-up strategies C-TiO_(x)nanosheets high-concentrations Ti^(3+) photocatalytic degradation

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Identifying the dynamic behaviors in complete reconstruction of Co-based complex precatalysts during electrocatalytic oxygen evolution

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Journal of Energy Chemistry 2025年第1期100卷 226-233页

作者： Jingfang Zhang Danyang Wu Linke Cai Youluan Lu Fanpeng Cheng Lijuan Shi Qun Yi Yao Liu Yi Huang Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina

Transition metal-based nanomaterials have emerged as promising electrocatalysts for oxygen evolution reaction(OER).Considerable research efforts have shown that self-reconstruction occurs on these nanomaterials under operating conditions of OER ***,most of them undergo incomplete reconstruction with limited thickness of reconstruction layer,leading to low component utilization and arduous exploration of real catalytic ***,we identify the dynamic behaviors in complete reconstruction of Co-based complexes during *** hollow phytic acid(PA)cross-linked CoFe-based complex nanoboxes with porous nanowalls are designed because of their good electrolyte penetration and mass transport ability,in favor of the fast and complete reconstruction.A series of experiment characterizations demonstrate that the reconstruction process includes the fast substitution of PA by OH-to form Co(Fe)(OH)xand subsequent potential-driven oxidation to Co(Fe)*** obtained CoFeOOH delivers a low overpotential of 290 mV at a current density of 10 mA cm^(-2)and a long-term *** experiment results together with theory calculations reveal that the Fe incorporation can result in the electron rearrangement of reconstructed CoFeOOH and optimization of their electronic structure,accounting for the enhanced OER *** work provides new insights into complete reconstruction of metal-based complexes during OER and offers guidelines for rational design of high-performance electrocatalysts.

关键词： Complete reconstruction Co-based complex Precatalysts Oxygen evolution reaction

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Unveiling the geometric site dependent activity of spinel Co_(3)O_(4)for electrocatalytic chlorine evolution reaction

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Journal of Energy Chemistry 2024年第5期92卷 95-103页

作者： Linke Cai Yao Liu Jingfang Zhang Qiqi Jia Jiacheng Guan Hongwei Sun Yu Yu Yi Huang Key Laboratory of Pesticide&Chemical Biology of Ministry of Education Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction of Ministry of EducationCollege of ChemistryCentral China Normal UniversityWuhan 430079HubeiChina Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationHubei Key Laboratory of Novel Reactor and Green Chemical TechnologySchool of Chemical Engineering&PharmacyWuhan Institute of TechnologyWuhan 430205HubeiChina College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108FujianChina School of Chemistry and Chemical Engineering Anhui UniversityHefei 230601AnhuiChina

Spinel cobalt oxide(Co_(3)O_(4)),consisting of tetrahedral Co^(2+)(CoTd)and octahedral Co^(3+)(CoOh),is considered as promising earth-abundant electrocatalyst for chlorine evolution reaction(CER).Identifying the catalytic contribution of geometric Co site in the electrocatalytic CER plays a pivotal role to precisely modulate electronic configuration of active Co sites to boost ***,combining density functional theory calculations and experiment results assisted with operando analysis,we found that the Co_(Oh) site acts as the main active site for CER in spinel Co_(3)O_(4),which shows better Cl^(-)adsorption and more moderate intermediate adsorption toward CER than CoTd site,and does not undergo redox transition under CER condition at applied *** by above findings,the oxygen vacancies were further introduced into the Co_(3)O_(4) to precisely manipulate the electronic configuration of Co_(Oh) to boost Cl^(-)adsorption and optimize the reaction path of CER and thus to enhance the intrinsic CER activity *** work figures out the importance of geometric configuration dependent CER activity,shedding light on the rational design of advanced electrocatalysts from geometric configuration optimization at the atomic level.

关键词： Chlorine evolution reaction Geometry effects Active chlorine Electronic configuration optimization Spinel oxides

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Genomic and metabolomic insights into the selection and differentiation of bioactive compounds in citrus

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Molecular Plant 2024年第11期17卷 1753-1772页

作者： Xiao Liang Yue Wang Wanxia Shen Bin Liao Xiaojuan Liu Zimeng Yang Jiebiao Chen Chenning Zhao Zhenkun Liao Jinping Cao Ping Wang Peng Wang Fuzhi Ke Jianguo Xu Qiong Lin Wanpeng Xi Lishu Wang Juan Xu Xiaochun Zhao Chongde Sun Plant Growth Development and Quality ImprovementZhejiang Provincial Key Laboratory of Integrative Biology of Horticultural PlantsZhejiang UniversityHangzhouChina Citrus Research Institute Southwest University/Chinese Academy of Agricultural SciencesChongqingChina Hainan Institute of Zhejiang University SanyaChina Zhejiang Citrus Research Institute TaizhouChina Key Laboratory of Agro-products Quality and Safety Control in Storage and Transport Process Ministry of Agriculture and Rural Affairs/Institute of Food Science and TechnologyChinese Academy of Agricultural SciencesBeijingChina College of Horticulture and Landscape Architecture Southwest UniversityChongqingChina Department of Hematology and Hematopoietic Cell Transplantation Comprehensive Cancer CenterCity of Hope National Medical CenterDuarteCAUSA Key Laboratory of Horticultural Plant Biology(Ministry of Education) Huazhong Agricultural UniversityWuhanChina

Bioactive compounds play an increasingly prominent role in breeding functional and nutritive fruit crops such as ***,the genomic and metabolic bases for the selection and differentiation underlying bioactive compound variations in citrus remain poorly *** this study,we constructed a species-level variation atlas of genomes and metabolomes using 299 citrus accessions.A total of 19829 significant SNPs were targeted to 653 annotated metabolites,among which multiple significant signals were identified for secondary metabolites,especially *** differential accumulation of bioactive compounds in the phenylpropane pathway,mainly flavonoids and coumarins,was unveiled across ancestral citrus species during differentiation,which is likely associated with the divergent haplotype distribution and/or expression profiles of relevant genes,including p-coumaroyl coenzyme A 2′-hydroxylases,flavone synthases,cytochrome P450 enzymes,prenyltransferases,and uridine diphosphate ***,we systematically evaluated the beneficial bioactivities such as the antioxidant and anticancer capacities of 219 citrus varieties,and identified robust associations between distinct bioactivities and specific ***,these findings provide citrus breeding options for enrichment of beneficial flavonoids and avoidance of potential risk of *** study will accelerate the application of genomic and metabolic engineering strategies in developing modern healthy citrus cultivars.

关键词： citrus metabolome genome-wide association study bioactive compounds

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Dual-engineered strategy of Ni-CeOv nanozyme with enhanced oxidase activity for sensitive colorimetric detection of total antioxidant capacity

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Talanta 2025年 295卷 128307页

作者： Xie, Chang Peng, Jiahe Jiang, Jizhou Wang, Huawei Lyu, Zhixian Li, Jun Xu, Qitong Chen, Ding Cao, Yan Wang, Lipan Mei, Surong Ministry of Environmental Protection School of Public Health Tongji Medical College Huazhong University of Science and Technology #13 Hangkong Road Hubei Wuhan430030 China School of Materials Science and Engineering Key Laboratory of Green Chemical Engineering Process of Ministry of Education Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Wuhan Institute of Technology Wuhan430205 China Hongshan District Center for Disease Control and Prevention Hubei Wuhan430000 China

Antioxidants are crucial in the fight against reactive oxygen species and thus in maintaining organismal health, so it is particularly important to realize a rapid and quantitative assay for common antioxidants in life. Current nanozyme-based total antioxidant capacity (TAC) assays face limitations: hydrogen peroxide (H2O2) dependence, noble metal costs, and poor antioxidant discrimination. To address these challenges, we engineered a dual-regulated Ni-doped CeO2 (Ni-CeOv) nanozyme through oxygen vacancy engineering and 3d-2p-4f orbital coupling. Density functional theory (DFT) calculations revealed that Ni doping synergistically affects the spontaneous formation of oxygen vacancies and enhances electron transfer through gradient orbital hybridization, resulting in a 2-fold increase in oxidase-like activity (Vmax = 0.10 μM/s) compared to undoped CeO2. Leveraging this H2O2-independent nanozyme, we developed a portable colorimetric platform capable of both ultra-sensitive detection and antioxidant discrimination through distinct inhibition kinetics. Integration with smartphone-based paper sensors enabled on-site TAC quantification in commercial beverages and cosmetics within 5 min, achieving recovery rates of 98.35–104.41 %, at a cost of only $0.2/assay. This work establishes a paradigm for developing low-cost, field-deployable nanozyme sensors for the detection of TAC. © 2025 Elsevier B.V.

关键词： Nanosaws

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development of high reflectance insulating film materials for packaging semiconductor optical devices

Development of high reflectance insulating film materials fo...

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International Conference on (ICEPT) Electronic Packaging Technology

作者： Wei-Su Chen Yun Wang Shiqiao Huang Zheng Li Dandan He Jianwei Zhang Evan Twan Xin Liu Ziming Chen Research Center Quantechmaterials (Guangzhou) Co. LTD Guangzhou China Material Research Department Quantechmaterials (Guangzhou) Co. LTD Guangzhou China Quality Control(QC) Department Quantechmaterials (Guangzhou) Co. LTD Guangzhou China Process Development Department Quantechmaterials (Guangzhou) Co. LTD Guangzhou China Lithography Research Department Quantechmaterials (Guangzhou) Co. LTD Guangzhou China

The high reflectance insulating layer protective film used in semiconductor or display optical devices is made of Bragg Reflection structures formed by repeated overlapping coating of high index metal-containing and low index silicon-containing insulating layers. In this paper, the manufacturing process, baking process, optimization of surfactant formulation of ultralow refractive index Spin-on Glass (SOG) encapsulation insulating layer material, the effect of aging in air on coating defects, and the effect of filtering SOG solution for fine dust on film surface are reported. The minimum refractive index (n) of SOG reported in this paper can be lower than 1.2@633nm wavelength, and the optimum baking process is three steps of low, middle and high temperature baking 80°C/150°C/300°C, respectively. The optimal material weight ratio of surfactant is 1 basic unit. Isolation of water and/or oxygen in the air can eliminate spin coating defects. The fine dusts in the SOG solution resulting in defects on coated film surface is eliminated by re-filtrating the liquid after taken out from warehouse. At present, the SPC data of this material has reached the mass production specification.

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Analyzing the Performance of Single-Tooth Rock Cutting Under Bottom-Hole Pressure Conditions

SSRN

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SSRN 2023年

作者： Niu, Wenlong Liao, Hualin Wang, Huajian Pei, Xueliang Shi, Yucai Niu, Jilei Shandong Qingdao266580 China Key Laboratory of Unconventional Oil and Gas Development Ministry of Education Shandong Qingdao266580 China Shandong Ultra-deep Drilling Process Control Tech R&D Center Shandong Qingdao266580 China Drilling Technology Research Institute SINOPEC Shengli Oilfield Service Corporation 257017 China

Addressing the ambiguity surrounding the process of crack initiation and propagation in rock subjected to confining pressure and hydrostatic pressure, this study integrates laboratory experiments with numerical simulations. First, an analysis is conducted on the cutting force, rock fragmentation energy consumption, rock chip size, and distribution of cutting stress in rocks simultaneously exposed to confining pressure and hydrostatic pressure. Subsequently, an internal crack propagation analysis model for rock is established using the finite discrete element method, and the accuracy of this model is verified through experimentation. The process and characteristics of internal crack propagation during the cutting process are analyzed. Lastly, the variation characteristics of cutting forces under different cutting parameter conditions are compared. The findings indicate that, under identical cutting conditions, confining pressure reduces the degree of granite rock fragmentation, increases the presence of powdery rock debris, and mitigates force fluctuation characteristics, leading to an approximate 17% increase in energy consumption of rock breaking. The presence of confining pressure promotes the generation of micro-cracks within the rock, but restricts the expansion of primary cracks. Notably, shear cracks ahead of the cutting teeth and tensile cracks beneath the cutting path are conspicuously diminished, thereby augmenting the difficulty of rock failure. The elevation of confining pressure and cutting depth emerges as the principal factors contributing to elevated cutting forces, with cutting forces exhibiting exponential growth with increasing confining pressure. At a confining pressure of 9 MPa, cutting forces escalate by 50%. Moreover, substantial cutting depth induces discontinuity in the rock failure mechanism. Stress during cutting predominantly concentrates in the vicinity of the PDC tooth front and beneath the cutting trajectory, extending along the advance

关键词： Energy utilization

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Spatiotemporal process and mechanism of Kashin-Beck disease regression in Xizang during 2000-2015

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Dili Xuebao/Acta Geographica Sinica 2024年第11期79卷 2849-2863页

作者： Wang, Jing Li, Ruonan Wei, Binggan Li, Hairong Guo, Min Key Laboratory for Geographical Process Analysis & Simulation Research Institute of Sustainable Development Central China Normal University Wuhan430079 China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research CAS Beijing100101 China Xizang Autonomous Region Center for Disease Control and Prevention Lhasa850030 China

Kashin-Beck disease (KBD) control in Xizang has now entered a new stage of consolidation and improvement. Clarifying the spatiotemporal mechanism of its regression is of great significance for promoting the long-term prevention and control of endemic diseases in the plateau. Based on the detection rate data of KBD in Xizang from 2000 to 2015 and by the methods of random forest and spatial statistics, this study analyzed the spatiotemporal variation characteristics of KBD and explored the main factors affecting the regression of KBD and their regional differences. The results showed that: (1) The condition of KBD decreased steadily in all parts of Xizang during 2000-2015. The spatial distribution of KBD gradually converged to the east from the overall pattern of high in the east and low in the west, high in the south and low in the north. The disease was the most serious and had the longest duration in Qamdo wards. (2) The top four major factors affecting the regression of KBD were per capita food consumption of farmers and herdsmen, per capita GDP, per capita disposable income of farmers and herdsmen, and NDVI. Except for NDVI, all the other factors showed negative correlations with the detection rate of KBD. (3) In Ali, the prevalence of KBD was mainly influenced by per capita GDP and the income level of farmers and herdsmen, while in the middle reaches of the Yarlung Zangbo River and Qamdo, wards were more affected by dietary factors. (4) The dominant factors for the prevalence of KBD varied greatly within different years, which specifically manifested as a shift from natural factors to humanistic and social factors. Social economy, dietary nutrition and land use patterns played important roles in the prevention and control of KBD in Xizang. In view of the unique environmental conditions in Xizang, strengthening diversified food supply and adhering to returning farmland to forests and grasslands are still the basic countermeasures for preventing and controlling KB

关键词： influence mechanism Kashin-Beck disease (KBD) random forest spatiotemporal variation Xizang

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Study on water purification with warm and cold season aquatic plants

Study on water purification with warm and cold season aquati...

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作者： Jiajun Sun Yajie Zhang Guangyu Ma Junhong Xiao Yajing Cai Zhi Wang Hongbin Cao Beijing Engineering Research Center of Process Pollution Control Institute of Process EngineeringChinese Academy of Sciences University of Chinese Academy of Sciences China Xiong'an Group Co.Ltd College of Environmental Science and Engineering Beijing Forestry University Environmental Development Center of the Ministry of Ecology and Environment

As a national key protection and restoration project, ecological restoration of Baiyangdian Wetland has an important significance for environmental management. As the research area in Zaozhadian wetland,the purification effect of warm season and cold season aquatic plants was studied under different overflying water qualities. It provides a theoretical and experimental basis for the ecological environment restoration and management of wetlands. The results showed that the warm season and cold season aquatic plants all played important roles on the nitrogen and phosphorus removal and maintained the stable water environmental from the nutrient release from soil. The warm season plant-mixed Myriophyllum spicatum and Ceratophyllum demersum and the cold season plantPotamogeton crispus L. can be reasonably configurated for the wetland restoration.

关键词： Study on water purification with warm and cold season aquatic plants

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Bottom-hole stress analysis of ultra-deep wells based on theory of poroelastic mechanics

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Zhongguo Shiyou Daxue Xuebao (Ziran Kexue Ban)/Journal of China University of Petroleum (Edition of Natural Science) 2020年第5期44卷 52-61页

作者： Hu, Huaigang Guan, Zhichuan Xu, Yuqiang Han, Chao Liu, Yongwang Liang, Deyang Lu, Baoping Qingdao266580 China Shandong Ultra-deep Drilling Process Control Technology Research and Development Center Qingdao266580 China SINOPEC Research Institute of Petroleum Engineering Beijing100101 China

Based on Biot's theory of poroelastic mechanics and the consideration of complex stress conditions of bottom hole rocks, a fully coupled model between seepage field and stress field was established, the dynamic change law of pore pressure and stress distribution at the well bottom was obtained by numerical calculation, and the results were verified by Warren's model. The predictive model of the rock strength failure at the bottom-hole combining with the three-dimensional Mohr-Coulomb criteria was developed. The influence of stress distribution on rock damage was discussed. By calculating the failure function, the strength condition of the rock at the bottom-hole under different working conditions and different times was analyzed. The results show that the dynamic response of the rock at the bottom-hole can be evaluated in real-time by using the established fluid-solid coupling model. Generally, the three-dimensional stress reaches the maximum value (compressive stress)instantly as the wellbore excavated, while the stress reaches the minimum value (partially tensile stress)after tens of seconds, and the rock stress at the bottom-hole will stabilize after a few hours. Under an over-balanced drilling condition, there is a risk of strength failure at a small distance inside the rock, rather than at the bottom-hole wall only when the borehole is excavated instantaneously. When the pressure difference is greater than 1.75 MPa under the condition of underbalanced drilling, the rock at the bottom-hole has a tendency of strength destruction during the whole period, and the strength failure area will expand with the pressure difference increasing. © 2020, Editorial Office of Journal of China University of Petroleum(Edition of Natural Science). All right reserved.

关键词： Rocks

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