Results 101 to 110 of about 7,991 (240)

Concurrent Photooxidation and Photoreduction of Catechols and Para-Quinones by Chlorophyll Metabolites

Photochem
Photosynthesis is initiated when the sun’s light induces electron transfer from chlorophyll to plastoquinone, a para-quinone. While photosynthesis occurs in the intact chloroplasts of living plants, similar photochemical reactions between dietary ...
Katherine Phan, Emily E. Lessard, Joseph A. Reed, Meredith G. Warsen, Soren Zimmer, Lisa M. Landino   +5 more
doaj   +1 more source

Photoreduction of Carbon Dioxide via TiO2 and ZrO2 Photocatalysts

, 2008
This study investigated the photocatalytic reduction of CO2 in a self-designed closed circulated batch reactor system and a bench-scale batch photocatalytic reactor.
Lo, Cho-Ching
core  

Bismuth‐Based Semiconductors in Photocatalytic CO2 Reduction: Catalysts, Progress, and Future Perspectives

Carbon and Hydrogen, EarlyView.
This review systematically summarizes research progress on bismuth‐based semiconductor photocatalytic materials in the field of CO2 reduction. It focuses on elucidating the mechanisms by which four modification strategies—including heteroatom doping, oxygen vacancy engineering, microstructural control, and heterostructure fabrication—regulate band ...
Shuisen He, Guodong Zhang, Mengchi Guo, Song Zhong, Jie Yang, Tongrui Zhang, Xingye Zeng   +6 more
wiley   +1 more source

An Ambient Photocatalytic Approach to In‐Situ Prepare Cobalt/Cobalt Phosphide and Cobalt/Cobalt Phosphide@Graphene Heterojunction Nanomaterials With Optimized Charge Separation Effects for Highly Efficient Relayed Electrocatalytic NOX− Reduction to NH3

Carbon Energy, EarlyView.
A visible‐light‐driven ambient photocatalytic method in‐situ fabricates Co/CoP‐x and Co/CoP@rGO heterojunction with enhanced charge separation, enabling highly efficient relayed electrocatalytic NOx− reduction to NH3 with outstanding Faraday efficiency and ammonia productivity.
Xin Zhao, Chuanjun Wang, Shenjie Liu, Guoqiang Wang, Jing Dong, Chen Lei, Geoffrey I. N. Waterhouse, Jing Xu   +7 more
wiley   +1 more source

Dynamic‐FLPs Enabled by Orbital Hybridization Tuning: Boosting 100% CO Selectivity for Dilute CO2‐to‐CO Conversion

Carbon Energy, EarlyView.
This study, for the first time, constructs photostructured dynamic frustrated Lewis pairs (DFLPs) via a p‐p orbital hybridization regulation strategy, achieving the 100% reduction of low‐concentration CO₂ to CO and breaking the stability‐activity trade‐off.
Xiao‐hong Wang, Wen‐qing Gao, Jin‐li Liu, Yi‐lei Li, Hui‐ying Mu, Ying Liu, Fa‐tang Li   +6 more
wiley   +1 more source

Bismuth Chalcogenide‐Based Photocatalysts for Nitrogen Reduction: Recent Progress and Prospects

Chemistry – A European Journal, EarlyView.
Bismuth chalcogenides emerge as promising visible‐light photocatalysts for sustainable ammonia synthesis, driven by tunable electronic structures and strong N2 activation. Recent advances reveal how defects, doping and heterojunction design synergistically enhance charge separation and reactivity. Key challenges and future directions highlight pathways
Mukesh K. Verma, Muhammad D. Bala, Phindile B. Khoza, Tshephiso R. Papo, Mzamo L. Shozi   +4 more
wiley   +1 more source

Heterovalent, Homometallic Rings: Synthesis, Optical, and EPR Studies of {TiIV7TiIII} Complexes

Chemistry – A European Journal, EarlyView.
A new class of heterovalent, homometallic complexes is reported, based on cyclic {TiIV7TiIII} cores with oxide and carboxylate bridges between nearest neighbors. The clusters show Class II mixed‐valent behavior at room temperature, but are valence localized at low temperature.
Selena J. Lockyer, Lubomir Loci, Yingzhao Ma, Matthew P. Stevens, Grigore A. Timco, George F. S. Whitehead, Richard E. P. Winpenny, Alice M. Bowen, Eric J. L. McInnes   +8 more
wiley   +1 more source

Efficient Light‐Driven Multi‐Electron Accumulation on Viologens by Molecular Control Over Photochemical Reaction Pathways

Chemistry – A European Journal, EarlyView.
Minimum structural changes, maximum output: By either utilizing a more oxidizing Ru(II) polypyridyl chromophore or by using a more reducing SED, the photocatalytic reduction of methyl viologen (MV2+) proceeds via a reductive quenching pathway. This not only significantly accelerates the overall photoreduction process but also allows accumulation of ...
Fatemeh Sousani, Georgina E. Shillito, Alexander K. Mengele, Martin D. Hager, Ulrich S. Schubert, Stefanie Gräfe, Stephan Kupfer, Sven Rau   +7 more
wiley   +1 more source

Photoinduced ROS Production by Poly(3‐hexylthiophene) (P3HT) is due to Autoxidation Rather Than Catalysis

Chemistry – A European Journal, EarlyView.
P3HT is widely treated as a photocatalyst that generates ROS under light. We show otherwise: ROS production comes at the expense of the polymer itself. Photoexcited P3HT acts as a self‐sacrificial photosubstrate, undergoing irreversible autoxidation during light‐driven oxygen reduction—a distinction critical for interpreting its behavior in emerging ...
Roman Gańczarczyk, Renata Rybakiewicz‐Sekita, Eric D. Głowacki   +2 more
wiley   +1 more source

Targeting Cancer Cells With Self‐Assembled Ru‐Polysaccharide Photocatalyst for Visible‐Light‐Induced Activation of Prodrugs

Chemistry – A European Journal, EarlyView.
Self‐assembled photocatalyst Ru(Ada‐bpy)(bpy)2⊂HACD targets cancer cells and catalyzes the prodrug to drug upon exposure to visible light, providing spatially and temporally control in cancer cells. This strategy achieves efficient, controllable, and targeted activation of prodrugs within cancer cells, laying the foundation of effectively reducing the ...
Jianghua Liu, Dinghao Wu, Alexander Kros, Joost N. H. Reek   +3 more
wiley   +1 more source