High-performance electrocatalysts with superior stability are critically important for their practical applications in hydrogen evolution reaction (HER) and oxygen reduction (ORR). Herein, we report a facile method to fabricate urchin-like CoP nanocrystals (NCs) as catalyst both HER ORR desirable electrocatalytic activities long-term stability. The NCs diameter of 5 μm were successfully prepared by hydrothermal following phosphidation treatment N2 atmosphere present excellent catalytic...

Tuning the crystal phase of metal alloy nanomaterials has been proved a significant way to alter their catalytic properties based on structure and electronic property. Herein, we successfully developed simple strategy controllably synthesize rare hexagonal close-packed (hcp) NiFe nanoparticle (NP) encapsulated in N-doped carbon (NC) shell (hcp-NiFe@NC). Then, systemically investigated oxygen evolution reaction (OER) performance samples under alkaline conditions, which hcp-NiFe@NC exhibits...

Semiconductor quantum dots (QDs) with photoluminescence (PL) emission at 900–1700 nm (denoted as the second near-infrared window, NIR-II) exhibit much-depressed photon absorption and scattering, which has stimulated extensive researches in biomedical imaging NIR devices. However, it is very challenging to develop NIR-II QDs a high yield (PLQY) excellent biocompatibility. Herein, we designed synthesized an alloyed silver gold selenide (AgAuSe) QD bright from 820 1170 achieved record absolute...

Effective drug delivery in the central nervous system (CNS) needs to have long blood-circulation half-lives, pass through blood–brain barrier (BBB), and subsequently be taken up by target cells. Herein, a traceable CNS nanoformulation (RVG-NV-NPs) is developed encapsulating bexarotene (Bex) AgAuSe quantum dots (QDs) within Lamp2b-RVG-overexpressed neural stem cell (NSC) membranes. The high-fidelity near-infrared-II imaging QDs offers possibility of vivo monitoring multiscale process from...

Visible light (λ > 420 nm) induced photocatalytic degradation of rhodamine B (RhB) in the presence H2O2 by one-dimensional (1D) nanorods goethite (α-FeOOH) and hematite (α-Fe2O3) has been investigated, results were compared to those micrometer-sized rods. α-FeOOH self-assembled oriented attachment primary nanoparticles, while porous α-Fe2O3 rods prepared thermal dehydration respective precursors via a topotactic transformation. The as-prepared samples characterized powder X-ray diffraction,...

Rational design of cost‐effective, nonprecious metal‐based catalysts with desirable oxygen reduction reaction (ORR) performance is extremely important for future fuel cell commercialization, etc. Herein, a new type ORR catalyst Co‐N‐doped mesoporous carbon hollow sphere (Co‐N‐mC) was developed by pyrolysis from elaborately fabricated polystyrene@polydopamine‐Co precursors. The obtained active Co sites distributed in highly graphitized N‐doped spheres exhibited outstanding activity an onset...

Activatable theranostic systems show potential for improved tumor diagnosis and therapy owing to high detection specificities, effective ablation, minimal side-effects. Herein, a microenvironment (TME)-activated NIR-II nanotheranostic system (FEAD1) precise treatment of peritoneal metastases is presented. FEAD1 was fabricated by self-assembling the peptide Fmoc-His, mercaptopropionic-functionalized Ag2 S quantum dots (MPA-Ag2 QDs), chemodrug doxorubicin (DOX), NIR absorber A1094 into...

Lateral heterostructures fabricated by using two-dimensional (2D) building blocks have attracted a great deal of attention in materials science and device physics.

Fluorescence located in 1500-1700 nm (denoted as the near-infrared IIb window, NIR-IIb) has drawn great interest for bioimaging, owing to its ultrahigh tissue penetration depth and spatiotemporal resolution. Therefore, NIR-IIb fluorescent probes with high photoluminescence quantum yield (PLQY) stability along biocompatibility are urgently pursued. Herein, a novel probe of Au-doped Ag2 Te (Au:Ag2 Te) dots (QDs) is developed via facile cation exchange method. The Au dopant concentration QDs...

Abstract Fluorescence in the second near‐infrared window (NIR‐II, 900–1700 nm) has drawn great interest for bioimaging, owing to its high tissue penetration depth and spatiotemporal resolution. NIR‐II fluorophores with photoluminescence quantum yield (PLQY) stability along biocompatibility are urgently pursued. In this work, a Ag‐rich Ag 2 Te dots (QDs) surface sulfur source is successfully engineered prepare larger bandgap of S shell passivate core via facile colloidal route, which greatly...

Rational design of efficient lanthanide-doped down-shifting nanoparticles (DSNPs) has attracted tremendous attention. However, energy loss was inevitable in the multiple Ln3+ doping systems owing to complex migration processes. Here, an NaErF4@NaYF4@NaYF4:10%Nd@NaYF4 DSNP tactfully designed, which a buffer layer NaYF4 modulated restrict interionic between Er3+ and Nd3+; meanwhile, surface defects were passivated by outermost NaYF4. Therefore, as-prepared DSNPs exhibited two intensive...

A promising visible-light photocatalyst with an intrinsic dipole consisting of GeSe and SnS.

Abstract Ag 2 Se quantum dots (QDs) as an effective biological probe in the second near‐infrared window (NIR‐II, 1000–1700 nm) have been widely applied bioimaging with high tissue penetration depth and spatiotemporal resolution. However, ions deficiency crystal defects caused by + mobility crystals are mainly responsible for inefficient photoluminescence (PL) of QDs. Herein, a tailored route is reported to achieve controllable doping QDs which exchanged Pb via cation exchange (CE),...

Natural killer (NK) cell-based adoptive immunotherapy has demonstrated encouraging therapeutic effects in clinical trials for hematological cancers. However, the effectiveness of treatment solid tumors remains a challenge due to insufficient recruitment and infiltration NK cells into tumor tissues. Herein, programmed nanoremodeler (DAS@P/H/pp) is designed remodel dense physical stromal barriers dysregulation chemokine environment enhance tumors. The DAS@P/H/pp triggered by acidic...

BACKGROUND: Stent-assisted coiling has been used in both unruptured and ruptured aneurysms, but the safety efficacy still remain controversial. OBJECTIVE: To compare of stent-assisted with alone for intracranial aneurysms. METHODS: We retrospectively reviewed 512 patients treated by endovascular or over a 1-year period. The patients' clinical imaging information was recorded. Procedure-related complication rates, recurrence outcomes were analyzed total aneurysms subgroups RESULTS: A 243 269...

A new photovoltaic system based on single layer group-IV monochalcogenides MX (M = Ge, Sn; X S, Se) exhibits high performance.

Currently, mainstream lanthanide probes with fluorescence located in the second near-infrared subwindow of 1500-1700 nm (NIR-IIb) are predominantly Er(III)-based nanoparticles (NPs). Here we report a newly developed NIR-IIb fluorescent nanoprobe, α-Tm NP (cubic-phase NaYF4@NaYF4:Tm@NaYF4), an emission at 1630 nm. We activate Tm(III) through large spread Stark split sublevels induced by crystal-field effect α-NaYF4 host. Further, systematically investigated crystalline structure host NaYF4...

Abstract Photothermal therapy (PTT) is considered a promising treatment strategy for solid tumors. However, local hyperthermia (over 45°C) during PTT can cause severe side effects in neighboring healthy tissues. with accurate temperature feedback compelling to ablate tumors and reduce effects, but it still faces challenges. Here, new kind of phototheranostic nanoparticle, namely 17‐RF@Ag 2 Se developed, enabling vivo NIR‐II fluorescence tracking, nanothermometry as well synergistic...

Abstract Exploration of the relationship between electrocatalytic activities and their chemical valence is very important in rational design high‐efficient electrocatalysts. A series porous nickel sulfides hybridized with N S co‐doped carbon nanoparticles (Ni x y ‐NSCs) different valences Ni, Ni 9 8 ‐NSCs, ‐NiS 1.03 NiS ‐NSCs are successfully fabricated, performances as oxygen evolution reaction electrocatalysts systematically investigated. The obtained via a two‐step including...