Abstract Photocatalytic water splitting converts sunlight directly into storable hydrogen, but commonly involves the use of pure and land for plant installation while generating unusable waste heat. Here we report a hybrid device consisting photocatalyst (PC) solar vapour generator (SVG) simultaneous overall purification from open sources. Specifically, an ultraviolet light-absorbing RhCrO x –Al:SrTiO 3 PC is deposited on top floating, visible infrared porous carbon SVG, which produces green...

Fuel-forming enzymes can display excellent performance, achieving high rates of catalysis with unity selectivity at minimal overpotentials, but they are generally considered to be fragile and difficult handle in combination synthetic semiconductors light-driven chemical synthesis. Here, we demonstrate a biohybrid platform that is assembled from cyanamide-functionalized carbon nitride (CNX) as scalable inexpensive photosensitizer selectively photo-oxidizes 4-methyl benzyl alcohol (MBA) its...

The chemical inertness of polyethylene makes recycling challenging and motivates the development new catalytic innovations to mitigate polymer waste. Current methods yield a complex mixture liquid products, which is utilize in subsequent processes. Here, we present an oxidative depolymerization step utilizing diluted nitric acid convert into organic acids (40% yield), can be coupled photo- or electrocatalytic decarboxylation reaction produce hydrocarbons (individual hydrocarbon yields 3 20%,...

Abstract The production of clean fuels and chemicals from waste feedstocks is an appealing approach towards creating a circular economy. However, photoreforming commonly employs particulate photocatalysts, which display low product yields, selectivity, reusability. Here, perovskite‐based photoelectrochemical (PEC) device reported, produces H 2 fuel simultaneously reforms substrates. A novel Cu 30 Pd 70 oxidation catalyst integrated in the PEC to generate value‐added products using simulated...

ConspectusThe sustainable synthesis of fuels and chemicals is key to attaining a carbon-neutral economy. This can be achieved by mimicking the light-harvesting catalytic processes occurring in plants. Solar fuel production commonly performed via established approaches, including photovoltaic–electrochemical (PV–EC), photoelectrochemical (PEC), photocatalytic (PC) systems. A recent shift saw these systems evolve into integrated, compact panels, which suit practical applications through their...

Plastic upcycling through catalytic transformations is an attractive concept to valorize waste, but the clean and energy-efficient production of high-value products from plastics remains challenging. Here, we introduce chemoenzymatic photoreforming as a process coupling enzymatic pretreatment solar-driven reforming polyester under mild temperatures pH produce H2 value-added chemicals. Chemoenzymatic demonstrates versatility in films nanoplastics at high yields reaching ∼103-104 μmol gsub-1...

Integration of carbon capture with utilization technologies can lead the way to a future net-zero economy. Nevertheless, direct conversion chemically captured CO2 remains challenging due its thermodynamic stability. Here, we demonstrate from flue gas or air and into syngas using solar irradiation without any externally applied voltage. The system captures an amine/hydroxide solution photoelectrochemically converts it (CO:H2 1:2 [captured concentrated CO2], 1:4 [from simulated gas], 1:30...

Abstract A simple and precious‐metal free photosystem for the reduction of aqueous CO 2 to syngas (CO H ) is reported consisting carbon dots (CDs) as sole light harvester together with a molecular cobalt bis(terpyridine) co‐catalyst. This homogeneous photocatalytic system operates in presence sacrificial electron donor (triethanolamine) DMSO/H O solution at ambient temperature. The exhibits an activity 7.7 ± 0.2 mmol g CDs −1 (3.6 4.1 0.1 H2 after 24 hours full solar spectrum irradiation (AM...

In-situ orientation tuning of WO 3 thin films with high crystallinity is achieved a low-temperature and open-atmosphere deposition technique. The fabricated devices showed significant change in photo-response for film orientation.

The increasingly popular, lead-free perovskite, Cs3Bi2I9 has a vulnerable Bi3+ state under reductive potentials, due to the high standard reduction potential of Bi3+/Biδ+ (0 < δ 3). Contrary this fundamental understanding, herein, ligand-coated nanodiscs (NDs) demonstrate outstanding electrochemical stability with up -1 V versus saturated calomel electrode in aqueous 0.63 M (5% v/v) and 6.34 (50% hydroiodic acid (HI), minor BiI3 fraction unavoidable partial disintegration perovskite phase...

Ethylene is an important feedstock in the chemical industry, but currently requires production from fossil resources. The electrocatalytic oxidative decarboxylation of succinic acid offers principle environmentally friendly route to generate ethylene. Here, a detailed investigation role different carbon electrode materials and characteristics revealed that flat surface high ordering material are conducive for reaction. A range electrochemical spectroscopic approaches such as Koutecky–Levich...

Among the earth-abundant catalysts for air-electrode of metal-air batteries, success with one-component catalyst systems driving bifunctional oxygen evolution and reduction reactions (OER ORR) remains elusive. Herein, a cobalt–copper couple addresses this gap-area where best performing consists an electrically conducting backbone 57 wt % Cu0.9Co0.1 alloy 10 Co higher valence surface states CoO, Cu2O, CuO, Co3O4 19.7, 10, 2.9, 0.3 %, respectively. Computational studies show Co-center as...

Abstract Heavy metal ions (HMIs) and radionuclides pose serious threats to food safety, human health, marine ecosystems. Titanium carbides are advantageous owing their good hydrophilicity, controllable surface charge, specific active groups, high radiation stability, which make them effective candidates for removing toxic HMIs from wastewater. Recently, a lot of research is conducted discover new methods preparing functional titanium carbide composite materials enhance the adsorption...

The fabrication of mixed-metal oxide films holds promise for the development practical photoelectrochemical catalyst coatings but currently presents challenges in terms homogeneity, cost, and scalability. We report a straightforward versatile approach to produce catalytically active zirconium-based electrochemical water oxidation. are derived from novel single-source precursor cage compounds containing Zr with first-row transition metals such as Co, Fe, Cu. Zr-based film doped Co on...

&lt;p&gt;Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics optoelectronics industries. However their limited ambient stability, particularly those iodide perovskites, obscures use as photocatalysts especially in aqueous medium. In an unprecedented approach we have...

The simultaneous upcycling of all components in lignocellulosic biomass and the greenhouse gas CO2 presents an attractive opportunity to synthesise sustainable valuable chemicals. However, this approach is challenging realise due difficulty implementing a solution process convert robust complex solid (lignocellulose) together with barely soluble stable (CO2). Herein, we present complete oxidative valorisation lignocellulose coupled reduction low concentration through three-stage...

Metal halide perovskites with high absorption coefficient, direct generation of free charge carriers, excellent ambipolar carrier transport properties, point-defect tolerance, compositional versatility and solution processability are potentially transforming the photovoltaics optoelectronics industries. However their limited ambient stability, particularly those iodide perovskites, obscures use as photocatalysts especially in aqueous medium. In an unprecedented approach we have exploited...

Photocatalytic water splitting converts sunlight directly into storable hydrogen, but involves commonly pure water, installation on land and production of unusable waste heat. Here, we report a hybrid device consisting photocatalyst (PC) solar vapour generator (SVG) for simultaneous overall purification from open sources. Specifically, UV light absorbing RhCrOx-Al:SrTiO3 is deposited top floating, visible infrared porous carbon SVG, which produces green fuel with solar-to-hydrogen efficiency...

The simultaneous upcycling of all components in lignocellulosic biomass and the greenhouse gas CO¬2 presents an attractive opportunity to synthesise sustainable valuable chemicals. However, this approach has not yet been realised, presumably due difficulty implementing a solution process convert robust complex solid (lignocellulose) with barely soluble stable (CO2). Herein, we present complete oxidative valorisation lignocellulose coupled reduction low concentration CO2 through three-step...