Density Functional Theory Insight in Photocatalytic Degradation of Dichlorvos Using Covalent Triazine Frameworks Modified by Various Oxygen-Containing Acid Groups.

Dichlorvos (2,2-dichlorovinyl dimethyl phosphate, DDVP) is a highly toxic organophosphorus insecticide, and its persistence in air, water, and soil poses potential threats to human health and ecosystems. Covalent triazine frameworks (CTFs), with their sufficient visible-light harvesting capacity, ameliorated charge separation, and exceptional redox ability, have emerged as promising candidates for the photocatalytic degradation of DDVP. Nevertheless, pure CTFs lack effective oxidative active sites, resulting in elevated reaction energy barriers during the photodegradation of DDVP.

Linear-Organic-Ions In Situ-Intercalated MoS for Unveiling Capacitive Energy Storage Relies on the Chain Length.

Intercalating linear-organic-ions into the MoS interlayer is beneficial for optimizing electrons/ions' capacitive storage behavior. The chain length, as an important parameter of linear organic ions, can lead to differences in the dispersion, polarity, critical micelle concentration of organic ions, and steric hindrance to the growth of MoS nanosheets. Up until now, the relationship between chain length, synthesis of intercalated-MoS, and capacitive energy storage has not been unveiled.

Two-Dimensional High-Entropy Selenides for Boosting Visible-Light-Driven Photocatalytic Performance.

High-entropy materials (HEMs) have garnered extensive attention owing to their diverse and captivating physicochemical properties. Yet, fine-tuning morphological properties of HEMs remains a formidable challenge, constraining their potential applications. To address this, we present a rapid, low-energy consumption diethylenetriamine (DETA)-assisted microwave hydrothermal method for synthesizing a series of two-dimensional high-entropy selenides (HESes).

Highly Stable Perovskite Oxides for Electrocatalytic Acidic NO Reduction Streamlining Ammonia Synthesis from Air.

Electrochemical nitrogen oxide ions reduction reaction (NO RR) shows great opportunity for ammonia production under ambient conditions. Yet, performing NO RR in strong acidic conditions remains challenging due to the corrosion effect on the catalyst and competing hydrogen evolution reactions. Here, we demonstrate a stable LaSrNiFeO perovskite oxide for the NO RR at pH 0, achieving a Faradaic efficiency for ammonia of approaching 100 % at a current density of 2 A cm in a H-type cell.

Spin-Steered Photosynthesis of HO in Magnetic Single-Atom Modified Covalent Triazine Frameworks: A Density Functional Theory Study.

Covalent Organic Frameworks (COFs) demonstrate promising potential in the photocatalytic synthesis of HO owing to favorable light absorption, superior charge separation, and considerable surface area. However, the efficiency of HO photosynthesis is impeded by insufficient O adsorption sites and a high reaction barrier. In this work, various metal single atoms (Fe, Co, Ni) are introduced onto covalent triazine frameworks (CTFs) with N-N coordination sites to significantly enhance O adsorption and optimize HO synthesis.

Complete Photooxidation of Formaldehyde to CO via Ni-Dual-Atom Decorated Crystalline Triazine Frameworks: A DFT Study.

Formaldehyde (CHO) emerges as a significant air pollutant, necessitating effective strategies for its oxidation to mitigate adverse impacts on human health and the environment. Among various technologies, the photooxidation of CHO stands out owing to its affordability, safety, and effectiveness. Nitrogen-rich crystalline triazine-based organic frameworks (CTFs) exhibit considerable potential in this domain.

Metal Sulfide S-Scheme Homojunction for Photocatalytic Selective Phenylcarbinol Oxidation.

Metal sulfide-based homojunction photocatalysts are extensively explored with improved photocatalytic performance. However, the construction of metal sulfide-based S-scheme homojunction remains a challenge. Herein, the fabrication of 2D CdInS nanosheets coated 3D CdInS octahedra (referred to as 2D/3D n-CIS/o-CIS) S-scheme homojunction photocatalyst is reported by simply adjustment of polyvinyl pyrrolidone amount during the solvothermal synthesis.

Tunable Impedance of Cobalt Loaded Carbon for Wide-Range Electromagnetic Wave Absorption.

Impedance matching modulation of the electromagnetic wave (EMW) absorbers toward broad effective absorption bandwidth (EAB) is the ultimate aim in EMW attenuation applications. Here, a Joule heating strategy is reported for preparation of the Co-loaded carbon (Co/C) absorber with tunable impedance characteristics. Typically, the size of the Co can be regulated to range from single-atoms to clusters, and to nanocrystals.

The Mars-Van Krevelen cycle and non-noble metal Ni jointly promoting Z-scheme charge transfer: a study on the photothermal synergy effect applied in selectively oxidizing aromatic alcohols.

Photothermal catalysis is a promising method for selectively oxidizing organic compounds, effectively addressing the energy-intensive and low-selective processes of thermal catalysis, as well as the slow reaction rates of photocatalysis. In this study, a ternary photothermal catalyst, Ni/CeO/CdS, was synthesized using a simple calcination and solvothermal method. The catalyst demonstrated remarkable improvement in reaction rates and achieved nearly 100% selectivity in converting benzyl alcohol to benzaldehyde through photothermal catalysis at normal pressure.

Photoredox Coupling of CO Reduction with Benzyl Alcohol Oxidation over Ternary Metal Chalcogenides (ZnInS, m = 1-5) with Regulable Products Selectivity.

Integrating photocatalytic CO reduction with selective benzyl alcohol (BA) oxidation in one photoredox reaction system is a promising way for the simultaneous utilization of photogenerated electrons and holes. Herein, ZnInS (m = 1-5) semiconductors (ZnInS, ZnInS, ZnInS, ZnInS, and ZnInS) with various composition faults were synthesized via a simple hydrothermal method and used for effective selective dehydrocoupling of benzyl alcohol into high-value C-C coupling products and reduction of CO into syngas under visible light. The absorption edge of ZnInS samples shifted to shorter wavelengths as the atomic ratio of Zn/In was increased.

Tunable Interfacial Charge Transfer in a 2D-2D Composite for Efficient Visible-Light-Driven CO Conversion.

Photocatalytic CO conversion for hydrocarbon fuel production has been known as one of the most promising strategies for achieving carbon neutrality. Yet, its conversion efficiency remains unsatisfactory mainly due to its severe charge-transfer resistance and slow charge kinetics. Herein, a tunable interfacial charge transfer on an oxygen-vacancies-modified bismuth molybdate nanoflower assembled by 2D nanosheets (BMOVs) and 2D bismuthene composite (Bi/BMOVs) is demonstrated for photocatalytic CO conversion.

Surface-active site modulation of the S-scheme heterojunction toward exceptional photocatalytic performance.

Heterojunction photocatalysts have shown their immense capability in enhancing photogenerated charge carrier separation. Yet, the intrinsic scarcity of active sites in semiconductor components of heterojunction photocatalysts limits their potential for photocatalysis being used in practical applications. Herein, we employ a non-noble metal cocatalyst (, NiS) for modulating a S-scheme heterojunction photocatalyst consisting of Cd(CNS) (CdCNS) and CdS.

Interfacial C-S Bonds of g-C N /Bi Br S S-Scheme Heterojunction for Enhanced Photocatalytic CO Reduction.

Step-scheme (S-scheme) heterojunctions have been extensively studied in photocatalytic carbon dioxide (CO ) reduction due to their excellent charge separation and high redox ability. The built-in electric field at the interface of a S-scheme heterojunction serves as the driving force for charge transfer, however, the poor interfacial contact greatly restricts the carrier migration rate. Herein, we synthesized the g-C N /Bi Br S S-scheme heterostructure through in situ deposition of Bi Br S (BBS) on porous g-C N (P-CN) nanosheets.

Cooperative Coupling of H O Production and Organic Synthesis over a Floatable Polystyrene-Sphere-Supported TiO /Bi O S-Scheme Photocatalyst.

Cooperative coupling of photocatalytic H O production with organic synthesis has an expansive perspective in converting solar energy into storable chemical energy. However, traditional powder photocatalysts suffer from severe agglomeration, limited light absorption, poor gas reactant accessibility, and reusable difficulty, which greatly hinders their large-scale application. Herein, floatable composite photocatalysts are synthesized by immobilizing hydrophobic TiO and Bi O on lightweight polystyrene (PS) spheres via hydrothermal and photodeposition methods.

Photocatalytic H Evolution Coupled with Furfuralcohol Oxidation over Pt-Modified ZnCdS Solid Solution.

Coupling photocatalytic H production with organic synthesis attracts immense interest in the energy and chemical engineering field for the low-cost, clean, and sustainable generation of green energy and value-added products. Nevertheless, the performance of current photocatalysts is greatly limited by grievous charge recombination and tardy H evolution. To tackle these issues, a Pt nanocluster-modified ZnCdS solid solution is fabricated for photocatalytic H production and selective furfuralcohol oxidation.

Efficient interfacial charge transfer of 2D/2D porous carbon nitride/bismuth oxychloride step-scheme heterojunction for boosted solar-driven CO reduction.

Heterostructured photocatalysts are promising candidates in the photocatalysis field, and the heterojunction plays a vital role in the separation of spatial charge carriers. Here, a heterojunction was fabricated by the in situ growth of ultrathin BiOCl (BOC) nanosheets (NSs) onto porous g-CN (PGCN) NSs. The NSs' nanostructure can effectively shorten the diffusion path of charge carriers and thus promote interfacial charge migration, which can improve the surface photocatalytic activity.

Construction of organic-inorganic cadmium sulfide/diethylenetriamine hybrids for efficient photocatalytic hydrogen production.

The design and control of effective, sustainable, cheap, and reusable photocatalysts are crucial to the development of solar energy conversion to hydrogen (H) for solving environmental problems. The cadmium sulfide/diethylenetriamine (CdS/DETA) hybrid in a single crystalline structure was achieved by a solvothermal approach. The organic-inorganic CdS/DETA hybrid shows high performance and satisfactory stability for H production under visible-light irradiation.

Controllable synthesis of inorganic-organic ZnCdS-DETA solid solution nanoflowers and their enhanced visible-light photocatalytic hydrogen-production performance.

Sustainable photocatalytic hydrogen evolution (PHE) of water splitting has been utilized to solve the serious environmental pollution and energy shortage problems over the last decade. Inorganic-organic hybrid materials could combine the organic molecules and functional inorganic blocks into unique materials through complicated physical and chemical interactions. In this paper, diethylenetriamine (DETA) was used as an organic molecule template for the synthesis of inorganic-organic ZnCdS-DETA solid solution nanoflowers (NFs) at very low temperature.