163 hasil
Menampilkan 1–20 · 0,17 detik · RSS
Journal of the American Chemical Society
Scopus
ISSN 0002-7863 · American Chemical Society · 163 artikel di indeks
-
Artikel Jurnal Teks lengkap
Synergistic Atomic Environment Optimization of Nickel–Iron Dual Sites by Co Doping and Cr Vacancy for Electrocatalytic Oxygen Evolution
The dual-site synergistic catalytic mechanism on NiFeOOH suggests weak adsorption of Ni sites and strong adsorption of Fe sites limited its activity toward alkaline oxygen evolution reaction (OER). Large-scale density functional theory (DFT) calculations confirm that Co doping can increase Ni…
-
Artikel Jurnal Teks lengkap
Thermally Enhanced Relay Electrocatalysis of Nitrate-to-Ammonia Reduction over Single-Atom-Alloy Oxides
The electrochemical nitrate reduction reaction (NO 3 RR) holds promise for converting nitrogenous pollutants to valuable ammonia products. However, conventional electrocatalysis faces challenges in effectively driving the complex eight-electron and nine-proton transfer process of the NO 3 RR while…
-
Artikel Jurnal Teks lengkap
Electrocatalytic Nitrate and Nitrite Reduction toward Ammonia Using Cu 2 O Nanocubes: Active Species and Reaction Mechanisms
High Resolution Image Download MS PowerPoint Slide The electrochemical reduction of nitrate (NO 3 – ) and nitrite (NO 2 – ) enables sustainable, carbon-neutral, and decentralized routes to produce ammonia (NH 3 ). Copper-based materials are promising electrocatalysts for NO x – conversion to NH 3…
-
Artikel Jurnal Teks lengkap
Improving Protein Expression, Stability, and Function with ProteinMPNN
Natural proteins are highly optimized for function but are often difficult to produce at a scale suitable for biotechnological applications due to poor expression in heterologous systems, limited solubility, and sensitivity to temperature. Thus, a general method that improves the physical…
-
Artikel Jurnal
Water-Enhanced Direct Air Capture of Carbon Dioxide in Metal–Organic Frameworks
We have developed two series of amine-functionalized zirconium (Zr) metal–organic framework-808 (MOF-808), which were produced by postsynthetic modifications to have either amino acids coordinated to Zr ions (MOF-808-AAs) or polyamines covalently bound to the chloro-functionalized structure…
-
Artikel Jurnal
Covalent Organic Framework Membranes and Water Treatment
Covalent organic frameworks (COFs) are an emerging class of highly porous crystalline organic polymers comprised entirely of organic linkers connected by strong covalent bonds. Due to their excellent physicochemical properties (e.g., ordered structure, porosity, and stability), COFs are considered…
-
Artikel Jurnal Teks lengkap
Generative Models as an Emerging Paradigm in the Chemical Sciences
Traditional computational approaches to design chemical species are limited by the need to compute properties for a vast number of candidates, e.g., by discriminative modeling. Therefore, inverse design methods aim to start from the desired property and optimize a corresponding chemical structure…
-
Artikel Jurnal Teks lengkap
Intermetallic Single-Atom Alloy In–Pd Bimetallene for Neutral Electrosynthesis of Ammonia from Nitrate
Harvesting recyclable ammonia (NH 3 ) from the electrocatalytic reduction of nitrate (NO 3 RR) offers a sustainable strategy to close the ecological nitrogen cycle from nitration contamination in an energy-efficient and environmentally friendly manner. The emerging intermetallic single-atom alloys…
-
Artikel Jurnal Teks lengkap
Ammonia Electrosynthesis from Nitrate Using a Ruthenium–Copper Cocatalyst System: A Full Concentration Range Study
Electrochemical synthesis of ammonia via the nitrate reduction reaction (NO3RR) has been intensively researched as an alternative to the traditional Haber–Bosch process. Most research focuses on the low concentration range representative of the nitrate level in wastewater, leaving the high…
-
Artikel Jurnal Teks lengkap
Doping Shortens the Metal/Metal Distance and Promotes OH Coverage in Non-Noble Acidic Oxygen Evolution Reaction Catalysts
Acidic water electrolysis enables the production of hydrogen for use as a chemical and as a fuel. The acidic environment hinders water electrolysis on non-noble catalysts, a result of the sluggish kinetics associated with the adsorbate evolution mechanism, reliant as it is on four concerted…
-
Artikel Jurnal Teks lengkap
Asymmetric Sites on the ZnZrO x Catalyst for Promoting Formate Formation and Transformation in CO 2 Hydrogenation
The role of formate species for CO 2 hydrogenation is still under debate. Although formate has been frequently observed and commonly proposed as the possible intermediate, there is no definite evidence for the reaction of formate species for methanol production. Here, formate formation and…
-
Artikel Jurnal Teks lengkap
Fluoride-Rich, Organic–Inorganic Gradient Interphase Enabled by Sacrificial Solvation Shells for Reversible Zinc Metal Batteries
Zinc metal batteries are strongly hindered by water corrosion, as solvated zinc ions would bring the active water molecules to the electrode/electrolyte interface constantly. Herein, we report a sacrificial solvation shell to repel active water molecules from the electrode/electrolyte interface and…
-
Artikel Jurnal Teks lengkap
Shear Stress Triggers Ultrathin-Nanosheet Carbon Nitride Assembly for Photocatalytic H 2 O 2 Production Coupled with Selective Alcohol Oxidation
Coupled photocatalysis without cocatalysts can maximize the utilization of photons and atoms, which puts forward higher demands on photocatalysts. Polymeric carbon nitride (CN) has become the most promising photocatalyst, but still suffers from major drawbacks of insufficient catalytic sites and…
-
Artikel Jurnal
High-Density Cobalt Single-Atom Catalysts for Enhanced Oxygen Evolution Reaction
Single atom catalysts (SACs) possess unique catalytic properties due to low-coordination and unsaturated active sites. However, the demonstrated performance of SACs is limited by low SAC loading, poor metal–support interactions, and nonstable performance. Herein, we report a macromolecule-assisted…
-
Artikel Jurnal Teks lengkap
Regulating Catalytic Properties and Thermal Stability of Pt and PtCo Intermetallic Fuel-Cell Catalysts via Strong Coupling Effects between Single-Metal Site-Rich Carbon and Pt
Developing low platinum-group-metal (PGM) catalysts for the oxygen reduction reaction (ORR) in proton-exchange membrane fuel cells (PEMFCs) for heavy-duty vehicles (HDVs) remains a great challenge due to the highly demanded power density and long-term durability. This work explores the possible…
-
Artikel Jurnal Teks lengkap
Iron Photoredox Catalysis–Past, Present, and Future
Photoredox catalysis of organic reactions driven by iron has attracted substantial attention throughout recent years, due to potential environmental and economic benefits. In this Perspective, three major strategies were identified that have been employed to date to achieve reactivities comparable…
-
Artikel Jurnal Teks lengkap
Porphyrin-Based Covalent Organic Frameworks Anchoring Au Single Atoms for Photocatalytic Nitrogen Fixation
The development of efficient photocatalysts for N 2 fixation to produce NH 3 under ambient conditions remains a great challenge. Since covalent organic frameworks (COFs) possess predesignable chemical structures, good crystallinity, and high porosity, it is highly significant to explore their…
-
Artikel Jurnal Teks lengkap
Understanding the Role of Entropy in High Entropy Oxides
The field of high entropy oxides (HEOs) flips traditional materials science paradigms on their head by seeking to understand what properties arise in the presence of profound configurational disorder. This disorder, which originates from multiple elements sharing a single lattice site, can take on…
-
Artikel Jurnal Teks lengkap
Electrocatalytic Upcycling of Biomass and Plastic Wastes to Biodegradable Polymer Monomers and Hydrogen Fuel at High Current Densities
Transformation of biomass and plastic wastes to value-added chemicals and fuels is considered an upcycling process that is beneficial to resource utilization. Electrocatalysis offers a sustainable approach; however, it remains a huge challenge to increase the current density and deliver…
-
Artikel Jurnal Teks lengkap
ChatGPT Chemistry Assistant for Text Mining and the Prediction of MOF Synthesis
We use prompt engineering to guide ChatGPT in the automation of text mining of metal-organic framework (MOF) synthesis conditions from diverse formats and styles of the scientific literature. This effectively mitigates ChatGPT's tendency to hallucinate information, an issue that previously made the…