As rising star materials, single-atom and dual-atom catalysts have been widely reported in the electro-catalysis area. To answer key question: catalysts, which is better for electrocatalytic urea synthesis? we design two types of via a vacancy-anchorage strategy: Pd1 -TiO2 Cu1 nanosheets. An ultrahigh activity 166.67 molurea molPd-1 h1 with corresponding 22.54 % Faradaic efficiency at -0.5 V vs. reversible hydrogen electrode (RHE) achieved over , much higher than that . Various...

Abstract The development of a methodology for synthesizing value‐added urea (CO(NH 2 ) via renewable electricity‐driven C−N coupling reaction under mild conditions is highly anticipated. However, the complex catalytic active sites that act on carbon and nitrogen species make mechanism unclear, resulting in low efficiency from co‐reduction dioxide (CO nitrate (NO 3 − ). Herein, we propose novel tandem catalyst Mo‐PCN‐222(Co), which Mo serve to facilitate reduction *NH intermediate, while Co...

The increase of reaction temperature electrocatalysts is regarded as an efficient method to improve the oxygen evolution (OER) activity. Herein, it reported that electrocatalytic performance dual functional (i.e., and photothermal functions) Co3 O4 can be dramatically improved via its effect. operating electrode elevated in situ under near infrared (NIR) light irradiation, resulting enhanced activity due accelerated electrical conductivity, kinetics, desorption rate O2 bubbles from...

Background Current immunotherapies including checkpoint blockade therapy have limited success rates in certain types of cancers. Identification alternative molecules for the development effective strategies tumor immunotherapy is urgently needed. Immunoglobulin-like transcript 4 (ILT4) an immunosuppressive molecule expressed both myeloid innate cells and malignant cells. However, role tumor-derived ILT4 regulating cancer biology immunity remains unclear. Methods expression patient samples...

Boron nitride (BN) has been widely studied as an efficient catalyst for oxidative propane dehydrogenation (OPDH). Oxygen-containing boron species (e.g., BO·, B(OH)xO3-x) are generally considered the active centers in BN OPDH. Here, we show effective progressive substitution strategy toward development of boron-oxygen-nitrogen nanotubes (BONNTs) enriched with O-O a highly active, selective, and stable At 525 °C, olefin yield 48.6% is achieved over BONNTs conversion 64.4%, 2.8 times that...

The catalytic activities are generally believed to be relevant the electronic states of their active center, but understanding this relationship is usually difficult. Here, we design two types catalysts for electrocatalytic urea via a coordination strategy in metal-organic frameworks: CuIII-HHTP and CuII-HHTP. exhibits an improved production rate 7.78 mmol h-1 g-1 enhanced Faradaic efficiency 23.09% at - 0.6 V vs. reversible hydrogen electrode, sharp contrast Isolated CuIII species with S =...

Astaxanthin is a kind of carotenoid with strong antioxidant ability, which has shown broad applications in the areas healthcare, medicine, cosmetics, food additives, and aquaculture. With increasing demand for natural products, microbial production astaxanthin become new hot spot. In this study, synthesis pathway was first metabolically constructed Komagataella phaffii (K. phaffii)(Pichia pastoris). By exploring combination different promoters, producers were obtained. Then, key enzymes...

Butenyl-spinosyn, derived from Saccharopolyspora pogona, is a broad-spectrum and effective bioinsecticide. However, the regulatory mechanism affecting butenyl-spinosyn synthesis has not been fully elucidated, which hindered improvement of production. Here, high-production strain S. pogona H2 was generated by Cobalt-60 γ-ray mutagenesis, showed 2.7-fold increase in production compared to wild-type ASAGF58. A comparative transcriptomic analysis between ASAGF58 performed elucidate that more...

Li-CO2 batteries are widely studied as a promising technology for greenhouse-gas CO2 fixation well energy conversion and storage devices. Their further development, however, is hindered by the refractory discharge products, leading to large polarization voltage low round-trip efficiency. Here, W2C nanoparticles embedded in walls of carbon nanotubes (W2C-CNTs) prepared successfully. An efficient battery with W2C-CNTs cathode displays ultralow charge (3.2 V) high efficiency (90.1%). The comes...

Propane dehydrogenation (PDH) presents a promising alternative to naphtha steam cracking processes for propene production. However, the current commercial catalysts are plagued by toxicity of Cr (VI) and exorbitant cost Pt. We have developed an efficient, eco-friendly, cost-effective catalyst (CoOx@MFI) in which reduction-resistant CoOx clusters embedded situ into zeolite framework. This exhibits good catalytic performances (59.0% propane conversion 93.0% selectivity) PDH reactions,...

The electrochemical conversion of carbon dioxide into value-added compounds not only paves the way toward a sustainable society but also unlocks potential for electrocatalytic synthesis amides through introduction N atoms. However, it poses one greatest challenges in catalysis: achieving simultaneous completion C-C coupling and C-N coupling. Here, we have meticulously investigated catalytic prowess Cu-based single-atom alloys facilitating acetamide from CO2 N2. Through comprehensive...

Abstract The development of a methodology for synthesizing value‐added urea (CO(NH 2 ) via renewable electricity‐driven C−N coupling reaction under mild conditions is highly anticipated. However, the complex catalytic active sites that act on carbon and nitrogen species make mechanism unclear, resulting in low efficiency from co‐reduction dioxide (CO nitrate (NO 3 − ). Herein, we propose novel tandem catalyst Mo‐PCN‐222(Co), which Mo serve to facilitate reduction *NH intermediate, while Co...

Abstract As an infectious disease that poses a significant threat to the rapidly growing pig breeding industry, detection of Haemophilus parasuis (HPS) is often compromised by various interfering substances present in test sample during quantitative real-time PCR (qPCR). The rapid HPS important for isolation pigs and their treatment. We designed optimized qPCR detect INFB gene clinical environmental samples on farms. method was evaluated its specificity, sensitivity, repeatability,...

Cobalt‐based catalysts have emerged as promising substitutes for Pt‐ and Cr‐based propane dehydrogenation (PDH) catalysts. However, controlling the distribution of Co species achieving stable active centers remains challenging. Here, we report that reaction‐driven reconstruction metallic cobalt (Co0) within pure silica MFI zeolite (S‐1) into CoOx clusters silanol nests during PDH yields efficient durable performance. Atomically dispersed exhibit exceptional durability high propylene...

Cobalt‐based catalysts have emerged as promising substitutes for Pt‐ and Cr‐based propane dehydrogenation (PDH) catalysts. However, controlling the distribution of Co species achieving stable active centers remains challenging. Here, we report that reaction‐driven reconstruction metallic cobalt (Co0) within pure silica MFI zeolite (S‐1) into CoOx clusters silanol nests during PDH yields efficient durable performance. Atomically dispersed exhibit exceptional durability high propylene...

With the continuous promotion of China’s new rural construction, tourism is considered to be an important driving force promote sustainable development economy. Sustainable farmers’ income a major part Therefore, this paper attempts explore effect on income. Using provincial panel data over period 2003 2020 and employing mediation model perform empirical analysis, four results are obtained: (1) positively significantly affects However, among five kinds income, coefficients in magnitude...

B-based catalysts are widely studied in the oxidative dehydrogenation of propane (ODHP) owing to their high selectivity. Correspondingly, two species, B–O oligomers and rings, have been recognized as active centers catalysts. To answer essential question whether or ring species more selective for ODHP, AlB2 enriched with rings (R-AlB2) abundant B(OH)xO3–x (O-AlB2) were designed compared herein. When tested R-AlB2 exhibits an olefin yield 30.2% at 500 °C, which is 2.3 times that O-AlB2....