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TiO2 Hole Transport Layer Incorporated in a Thermally Evaporated Sb2Se3 Photoelectrode Exhibiting Low Onset Potential for Photoelectrochemical Applications

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Energy and Fuels 2024年第17期38卷 16936-16948页

作者： Xavier, Thatheyus Peter Piraviperumal, Malar Kuo, Chih-Yu Govindasamy, Mani Thinfilm Photovoltaics Laboratory Department of Physics and Nanotechnology SRM Institute of Science and Technology Tamil Nadu Kattankulathur603203 India Department of Chemical Engineering & Biotechnology National Taipei University of Technology Taipei City10608 Taiwan Research Center for Intelligence Medical Devices Ming Chi University of Technology New Taipei City243303 Taiwan Department of Research and Innovation Saveetha School of Engineering SIMATS Chennai602105 India Taipei10608 Taiwan International Ph.D. Program in Innovative Technology of Biomedical Engineering and Medical Devices Ming Chi University of Technology New Taipei City243303 Taiwan

Developing cost-effective photoelectrodes with a low band gap in the NIR-visible regions remains a challenge to achieve effective hydrogen production. We report the details of superstrate-configured photocathodes, consisting of antimony selenide (Sb2Se3) light absorbing layers with titanium dioxide (TiO2) as a hole transport layer, exhibiting the capability for hydrogen evolution with broad range light absorption enabled by the low band gap value of ∼1.2 eV of Sb2Se3. Strong anisotropy is a significant characteristic property of Sb2Se3, allowing superior electrical transportation along the [hkl] crystallographic orientation, which is obtained via close space evaporation of presynthesized bulk material at a growth temperature of 250 °C, over the solution-processed TiO2 film on a fluorine-doped tin oxide (FTO) substrate. The superstrate-configured FTO/TiO2/Sb2Se3 photocathode exhibited a photocurrent density of 100 μA cm-2 at −0.3 V vs RHE in 0.5 M H2SO4 under 1 sun illumination. To further improve photocurrent density, Pt as a cocatalyst was deposited over Sb2Se3 that led to enhanced photocurrent to 3 mA cm-2 at −0.3 V vs RHE in 0.5 M H2SO4 under 1 sun illumination. Despite the relatively lower photocurrent observed, which resulted due to a large conduction band offset (ΔECB = 0.99 eV) of the TiO2/Sb2Se3 interface in a superstrate configuration, a significantly lower onset potential of −0.1 V vs RHE was observed. The results are encouraging due to the low band gap of Sb2Se3, photocorrosion stability, and straightforward fabrication, which is expected to assist for significant outcomes. © 2024 American Chemical Society.

关键词： Titanium dioxide

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Building Osteogenic Microenvironments with a Double-Network Composite Hydrogel for Bone Repair

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Research 2023年第3期6卷 319-333页

作者： Jiaying Li Jinjin Ma Qian Feng En Xie Qingchen Meng Wenmiao Shu Junxi Wu Liming Bian Fengxuan Han Bin Li State Key Laboratory of Radiation Medicine and Protection School of Radiation Medicine and Protection and Interdisciplinary Sciences(RAD-X)Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsThe First Affiliated HospitalSuzhou Medical CollegeSoochow UniversitySuzhouJiangsu 215006China Orthopedic Institute Department of Orthopaedic SurgeryThe First Affiliated HospitalSuzhou Medical CollegeSoochow UniversitySuzhouJiangsuChina Key Laboratory of Biorheological Science and Technology Ministry of EducationCollege of BioengineeringChongqing UniversityChongqing 400044China Department of Biomedical Engineering University of StrathclydeGlasgowG11QEUK School of Biomedical Sciences and Engineering South China University of TechnologyGuangzhou International CampusGuangzhou 511442China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of TechnologyGuangzhou 510006China Guangdong Provincial Key Laboratory of Biomedical Engineering South China University of TechnologyGuangzhou 510006 China Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education South China University of TechnologyGuangzhou 510006 China

The critical factor determining the in vivo effect of bone repair materials is the microenvironment,which greatly depends on their abilities to promote vascularization and bone ***,implant materials are far from ideal candidates for guiding bone regeneration due to their deficient angiogenic and osteogenic ***,a double-network composite hydrogel combining vascular endothelial growth factor(VEGF)-mimetic peptide with hydroxyapatite(HA)precursor was developed to build an osteogenic microenvironment for bone *** hydrogel was prepared by mixing acrylatedβ-cyclodextrins and octacalcium phosphate(OCP),an HA precursor,with gelatin solution,followed by ultraviolet *** improve the angiogenic potential of the hydrogel,QK,a VEGF-mimicking peptide,was loaded in acrylatedβ-*** QK-loaded hydrogel promoted tube formation of human umbilical vein endothelial cells and upregulated the expression of angiogenesis-related genes,such as Flt1,Kdr,and VEGF,in bone marrow mesenchymal stem ***,QK could recruit bone marrow mesenchymal stem ***,OCP in the composite hydrogel could be transformed into HA and release calcium ions facilitating bone *** double-network composite hydrogel integrated QK and OCP showed obvious osteoinductive *** results of animal experiments showed that the composite hydrogel enhanced bone regeneration in skull defects of rats,due to perfect synergistic effects of QK and OCP on vascularized bone *** summary,improving the angiogenic and osteogenic microenvironments by our double-network composite hydrogel shows promising prospects for bone repair.

关键词： composite loaded inductive

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Advances in Enhancing Hemocompatibility of Hemodialysis Hollow‑Fiber Membranes

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Advanced Fiber materials 2023年第4期5卷 1198-1240页

作者： Haifeng Ji Yupei Li Baihai Su Weifeng Zhao Jayachandran N.Kizhakkedathu Changsheng Zhao College of Polymer Science and Engineering State Key Laboratory of Polymer Materials EngineeringSichuan UniversityChengdu 610065People’s Republic of China Department of Nephrology West China HospitalSichuan UniversityChengdu 610041China Institute for Disaster Management and Reconstruction Sichuan UniversityChengdu 610207China Department of Pathology and Lab Medicine&Center for Blood Research&Life Science Institute 2350 Health Sciences MallLife Sciences CentreThe School of Biomedical EngineeringUniversity of British ColumbiaVancouverBC V6T 1Z3Canada

Hemodialysis,the most common modality of renal replacement therapy,is critically required to remove uremic toxins from the blood of patients with end-stage kidney ***,the chronic inflammation,oxidative stress as well as throm-bosis induced by the long-term contact of hemoincompatible hollow-fiber membranes(HFMs)contribute to the increase in cardiovascular diseases and mortality in this patient *** review first retrospectively analyzes the current clini-cal and laboratory research progress in improving the hemocompatibility of *** on different HFMs currently in clinical use and their design are ***,we elaborate on the adverse interactions between blood and HFMs,involving protein adsorption,platelet adhesion and activation,and the activation of immune and coagulation systems,and the focus is on how to improve the hemocompatibility of HFMs in these ***,challenges and future perspectives for improving the hemocompatibility of HFMs are also discussed to promote the development and clinical application of new hemocompatible HFMs.

关键词： Hemodialysis Hollow fiber membranes Hemocompatibility Surface modification Hemocompatibility characterization

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Curcumin nano-prodrug induces multi-phase cell cycle arrest in colorectal cancer through suppression of CDKs and specific down-regulation of PLK1

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Smart materials in Medicine 2023年第1期4卷 648-660页

作者： Xu, Dong Feng, Xingzhi Wan, Yuxin Yang, Lanlan Gao, Qianling Yang, Zihuan Du, Chang Department of Biomedical Engineering School of Materials Science and Engineering South China University of Technology Guangzhou510641 China National Engineering Research Center for Tissue Restoration and Reconstruction South China University of Technology Guangzhou510006 China Guangdong Institute of Gastroenterology Guangdong Provincial Key Laboratory of Colorectal and Pelvic Floor Diseases The Sixth Affiliated Hospital Sun Yat-sen University Guangdong Guangzhou510655 China The Sixth Affiliated Hospital Sun Yat-sen University Guangdong Guangzhou510655 China Department of Clinical Laboratory The Sixth Affiliated Hospital Sun Yat-sen University Guangdong Guangzhou510655 China Key Laboratory of Biomedical Materials and Engineering of the Ministry of Education and Innovation Center for Tissue Restoration and Reconstruction South China University of Technology Guangzhou510006 China

Aberrant activation of cell cycle proteins leads to tumor progression in most cancer types. While 5-fluorouracil (5-Fu)-based chemotherapy remains the first-line treatment strategy for colorectal cancer (CRC), more than 40% of patients with advanced CRC do not benefit from the regimen. Herein, a chemically modified curcumin (mCur) was developed to explore its curative effect on CRC and reveal its potential role in cell cycle regulation. Amphiphilic mCur could self-assemble into positively charged nano-micelles, hence facilitating high cellular uptake and anticancer activity. Multi-phase cell cycle arrest, induced by both mCur and Cur, was first observed in HCT 116 cells. This phenomenon was mainly attributed to the Cur/mCur mediated downregulation of cyclin-dependent kinases (CDKs) and their direct interactions. Moreover, mCur and Cur treatments generated distinct phenotypic signatures. In particular, mCur induced distinct dynamic fluctuations in cell cycle and a relatively higher proportion of cells in the G2/M phase than Cur, and specifically triggered the impaired expression of polo-like kinase 1 (PLK1). An in vivo evaluation using a CRC patient-derived tumor xenograft (PDX) model indicated that mCur exhibited better antitumor effects via more significant downregulation of PLK1 in PLK1high PDX, with no obvious systemic toxicity. Collectively, our study revealed a unique multi-phase cell cycle arrest effect of Cur-based antitumor agents and highlighted the potential of mCur as a PLK1-targeted inhibitor for CRC therapy. © 2023 The Authors

关键词： Cells

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Laterally swept light-sheet microscopy enhanced by pixel reassignment for photon-efficient volumetric imaging

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Advanced Photonics Nexus 2023年第1期2卷 6-14页

作者： Liang Qiao Hongjin Li Suyi Zhong Xinzhu Xu Fei Su Xi Peng Dayong Jin Karl Zhanghao Southern University of Science and Technology College of EngineeringUTS-SUSTech Joint Research Centre for Biomedical Materials and DevicesDepartment of Biomedical EngineeringShenzhenChina City University of Hong Kong Department of Biomedical EngineeringHong KongChina Peking University College of Future TechnologyDepartment of Biomedical EngineeringBeijingChina University of Technology Sydney Institute for Biomedical Materials and Devices(IBMD)Faculty of ScienceSydneyAustralia

In light-sheet fluorescence microscopy,the axial resolution and field of view are mutually *** swept light-sheet microscopy(ASLM)can decouple the trade-off,but the confocal detection scheme using a rolling shutter also rejects fluorescence signals from the specimen in the field of interest,which sacrifices the photon ***,we report a laterally swept light-sheet microscopy(LSLM)scheme in which the focused beam is first scanned along the axial direction and subsequently laterally swept with the rolling *** show that LSLM can obtain a higher photon efficiency when similar axial resolution and field of view can be ***,based on the principle of image scanning microscopy,applying the pixel reassignment to the LSLM images,hereby named iLSLM,improves the optical *** simulation and experimental results demonstrate the higher photon efficiency with similar axial resolution and optical *** proposed scheme is suitable for volumetric imaging of specimens that are susceptible to photobleaching or phototoxicity.

关键词： light-sheet fluorescence microscopy image scanning microscopy volumetric imaging pixel reassignment

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Corrigendum to“Bilayer small-diameter vascular grafts with on-demand NO and H2S release capabilities”[***.31(2024)38-52]

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Bioactive materials 2024年第3期33卷 I0004-I0006页

作者： Pengfei Li Fubang Liang Lijuan Wang Dawei Jin Yushuang Shang Xu Liu Jie Zhang Yu Sun Yanjun Pan Jiang Yuan Jian Shen Meng Yin Jiangsu Collaborative Innovation Center of Biomedical Functional Materials Jiangsu Key Laboratory of Bio-functional MaterialsDepartment of Materials Science and EngineeringSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjing210023PR China Department of Cardiothoracic Surgery Shanghai Children’s Medical CenterSchool of MedicineShanghai Jiao Tong University1678 Dong Fang RoadShanghai200127PR China

The authors regret to inform that four images/graphs in Fig.3 and 6 lacked order annotations of A/B/C/*** the order annotations of cell viability of HUVECs and HUASMCs are opposite in *** correct form of the two figures are as *** authors apologize for any inconvenience caused and state that this does not change the discussion and the scientific conclusions of the article.

关键词： release opposite conclusions

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Sustainability assessment of seawater splitting: Prospects, challenges, and future directions

EcoEnergy

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EcoEnergy 2024年第4期2卷 630-651页

作者： Hicham Meskher Abebe Reda Woldu Paul K. Chu Fushen Lu Liangsheng Hu Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province Shantou University Shantou China Department of Physics Department of Materials Science and Engineering and Department of Biomedical Engineering City University of Hong Kong Kowloon Hong Kong China Chemistry and Chemical Engineering Guangdong Laboratory Shantou China

Seawater splitting is one of the desirable techniques for producing green hydrogen from the vast natural resource. Several reports about designing and fabricating efficient electrocatalysts to boost the oxygen evolution reaction and hydrogen evolution reaction have been published. However, they mainly focus on the electrodes, electrocatalysts, cost, and system stability. This article presents an overview of seawater splitting by highlighting the most challenging issues that complicate seawater electrolysis, such as durability, to guide future research in this important area. The strategy to launch life cycle assessments is described to evaluate the short and long-term impacts. Finally, the current challenges and prospective solutions are discussed.

关键词： electrocatalysts life cycle assessment seawater splitting sustainability

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Origin of superior pseudocapacitive mechanism of transition metal nitrides

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Journal of Energy Chemistry 2022年第6期31卷 561-568,I0016页

作者： Chao Huang Ping Qin Dan Li Qingdong Ruan Hao Song Liangliang Liu Yuzheng Wu Yinghe Ma Qingwei Li Kaifu Huo Paul K.Chu Department of Physics Department of Materials Science and Engineeringand Department of Biomedical EngineeringCity University of Hong KongHong Kong 999077China Department of Physics Hong Kong Baptist University(HKBU)Kowloon TongHong Kong 999077China The State Key Laboratory of Refractories and Metallurgy Institute of Advanced Materials and NanotechnologyWuhan University of Science and TechnologyWuhan 430081HubeiChina Wuhan National Laboratory for Optoelectronics(WNLO) School of Optical and Electronic InformationHuazhong University of Science and TechnologyWuhan 430074HubeiChina Advanced Research Institute for Multidisciplinary Science Qilu University of Technology(Shandong Academy of Sciences)Jinan 250307ShandongChina

Large-scale deployment of Internet of Things (IoT),a revolutionary innovation for a better world,is hampered by the limitation of energy *** transition metal nitride (TMN)-based micro-supercapacitors is a possible solution by taking advantage of the high conductivity,large specific capacitance,and large tap density of the ***,the pseudocapacitive storage mechanism of TMNs is still unclear consequently impeding the design of ***,the functions and mechanism of TMNs with different metal oxynitride (TMNO_(x)) concentrations in pseudocapacitive electrodes are investigated systematically by in situ Raman scattering,ex situ X-ray photoelectron spectroscopy,as well as ion isolation and substitution cyclic *** is found that the specific capacitances of TMNs depend on the TMNO_(x) concentrations and the N–M–O site is responsible for the large pseudocapacitance via the Faradic reaction between TMNO_(x) and OH^(-).Our study elucidates the mechanism pertaining to pseudocapacitive charge storage of TMNs and provides insights into the design and optimization of TMNO_(x) as well as other electrode materials for pseudocapacitors.

关键词： Internet of Things(IoT) Transition metal nitride(TMN) Metal oxynitride Supercapacitors

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Investigating chemotherapy effects on peripheral nerve elasticity 8

Investigating chemotherapy effects on peripheral nerve elast...

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Visualizing and Quantifying Drug Distribution in Tissue VIII 2024

作者： Cheburkanov, Vsevolod Du, Junwei Berezin, Mikhail Y. Yakovlev, Vladislav V. Texas AM University Department of Biomedical Engineering College StationTX77843 United States Washington University School of Medicine Departement of Radiology St. LouisMO63110 United States Washington University The Institute of Materials Science & Engineering St. LouisMO63130 United States

ISBN: (纸本)9781510669017

Chemotherapy is one of the treatment methods aimed at killing cancer cells and hindering their metastasis. However, chemotherapy is known to induce multiple adverse side-effects. One of them is peripheral neuropathy, which causes significant discomfort to the cancer patient. It is hypothesized that neuropathy is directly linked to peripheral nerve damage or elasticity change. In this study we have attempted to use Brillouin spectroscopy to evaluate nerve elasticity changes and correlate them to the effects of chemotherapy. © 2024 SPIE.

关键词： Chemotherapy

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Construction of tantalum/poly(ether imide)coatings on magnesium implants with both corrosion protection and osseointegration properties

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Bioactive materials 2021年第4期6卷 1189-1200页

作者： Kwang-Hee Cheon Cheonil Park Min-Ho Kang In-Gu Kang Min-Kyu Lee Hyun Lee Hyoun-Ee Kim Hyun-Do Jung Tae-Sik Jang Department of Materials Science and Engineering Seoul National UniversitySeoulRepublic of Korea Department of Biomedical-Chemical Engineering Catholic University of KoreaBucheonGyeonggi-doRepublic of Korea Institute of Health Science Research Korea UniversitySeoul02841Republic of Korea Department of Materials Science and Engineering Chosun UniversityGwangjuRepublic of Korea

Poly(ether imide)(PEI)has shown satisfactory corrosion protection capability with good adhesion strength as a coating for magnesium(Mg),a potential candidate of biodegradable orthopedic implant ***,its innate hydrophobic property causes insufficient osteoblast affinity and a lack of ***,we modify the physical and chemical properties of a PEI-coated Mg implant.A plasma immersion ion implantation technique is combined with direct current(DC)magnetron sputtering to introduce biologically compatible tantalum(Ta)onto the surface of the PEI *** PEI-coating layer is not damaged during this process owing to the extremely short processing time(30 s),retaining its high corrosion protection property and adhesion *** Ta-implanted layer(roughly 10-nm-thick)on the topmost PEI surface generates long-term surface hydrophilicity and favorable surface conditions for pre-osteoblasts to adhere,proliferate,and ***,in a rabbit femur study,the Ta/PEI-coated Mg implant demonstrates significantly enhanced bone tissue affinity and osseointegration *** results indicate that Ta/PEI-coated Mg is promising for achieving early mechanical fixation and long-term success in biodegradable orthopedic implant applications.

关键词： Magnesium Tantalum Poly(ether imide) Bio-functionalized coating Biodegradable orthopedic implants

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