A5026135300- Advanced Photocatalysis Techniques
- Fecal contamination and water quality
- Microplastics and Plastic Pollution
- Groundwater flow and contamination studies
- Covalent Organic Framework Applications
- Semiconductor Quantum Structures and Devices
- Semiconductor materials and devices
- Recycling and Waste Management Techniques
- Advancements in Semiconductor Devices and Circuit Design
- Membrane Separation Technologies
- TiO2 Photocatalysis and Solar Cells
- Environmental remediation with nanomaterials
- Nanoparticles: synthesis and applications
- Adsorption and biosorption for pollutant removal
- Advanced oxidation water treatment
- Pharmaceutical and Antibiotic Environmental Impacts
- Perovskite Materials and Applications
- Water Treatment and Disinfection
- Organic Electronics and Photovoltaics
- Arsenic contamination and mitigation
- Advanced Nanomaterials in Catalysis
- Chromium effects and bioremediation
- Urban Stormwater Management Solutions
- Conducting polymers and applications
- Graphene and Nanomaterials Applications
Peking University
2016-2025
King University
2025
Ministry of Ecology and Environment
2024
University of Utah
2004-2020
ITMO University
2016
University of California, Riverside
2010
University of California, Santa Barbara
2009
Institute of Process Engineering
2008
Robert Bosch (Germany)
2008
University of Illinois Urbana-Champaign
1991-2005
Straining at the leash: The main features of electron-accepting materials with a 9,9′-bifluorenylidene backbone are strain relief and gain in aromaticity. These dimers (see picture) exhibit absorption near red spectral region (ca. 600 nm) HOMO (5.58–5.06 eV) LUMO (3.37–3.09 energy levels, which, together high solubility thermal stability render these attractive acceptors for bulk heterojunction (BHJ) solar cells.
Controversial and inconsistent results on the eco-toxicity of TiO2 nanoparticles (NPs) are commonly found in recorded studies more experimental works therefore warranted to elucidate nanotoxicity its underlying precise mechanisms. Toxicities five types NPs with different particle sizes (10∼50 nm) crystal phases were investigated using Escherichia coli as a test organism. The effect water chemistry was also examined. antibacterial effects revealed by dose-effect experiments decreased...
Solar-driven photosynthesis is a sustainable process for the production of hydrogen peroxide, efficiency which plagued by side reactions. Metal-free covalent organic frameworks (COFs) that can form suitable intermediates and inhibit reactions show great promise to photo-synthesize H2O2. However, insufficient formation separation/transfer photogenerated charges in such materials restricts H2O2 production. Herein, we provide strategy design donor-acceptor COFs greatly boost photosynthesis. We...
Abstract Designing a semiconductor‐based heterostructure photocatalyst for achieving the efficient separation of photogenerated electron‐hole pairs is highly important enhancing H 2 releasing photocatalysis. Here, new class Ni 1− x Co Se –C/ZnIn S 4 hierarchical nanocages with abundant and compact ZnIn nanosheets/Ni C nanosheets 2D/2D hetero–interfaces, designed synthesized. The constructed exposes rich hetero‐junctions, supplying broad short transfer paths charge carriers. close contacts...
Covalent organic frameworks (COFs) have great application potentials in photocatalytic water treatment. By using p-phenylenediamine with different numbers and locations of heterocyclic nitrogen atoms as a precursor, five types COFs positions were synthesized. We found that Cr(VI) photoreduction,Escherichia coli inactivation, paracetamol degradation by location-dependent. Particularly, the performance for all three tested pollutants followed order best COF-PDZ two ortho position N atoms,...
Periodate (PI)-based advanced oxidation process has recently attracted great attention in the water treatment processes. In this study, solar irradiation was used for PI activation to disinfect waterborne bacteria. The PI/solar system could inactivate Escherichia coli below limit of detection (LOD, 10 CFU mL-1) with initial concentrations 1 × 106, 107, and 108 mL-1 within 20, 40, 100 min, respectively. •O2- •OH radicals contributed bacterial disinfection. These reactive attack penetrate cell...
As novel metal-free photocatalysts, covalent organic frameworks (COFs) have great potential to decontaminate pollutants in water. Fast charge recombination COFs yet inhibits their photocatalytic performance. We found that the intramolecular transfer within could be modulated via constructing a donor-acceptor (D-A) structure, leading improved performance of toward pollutant degradation. By integrating electron donor units (1,3,4-thiadiazole or 1,2,4-thiadiazole ring) and acceptor (quinone),...
Abstract The insufficient exciton ( e − ‐ h + pair) separation/transfer and sluggish two‐electron water oxidation are two main factors limiting the H 2 O photosynthetic efficiency of covalent organic frameworks (COFs) photocatalysts. Herein, we present an alternative strategy to simultaneously facilitate reduce energy barrier in COFs via a dicyano functionalization. situ characterization theoretical calculations reveal that functionalization improves amount charge transfer channels between...
Owing to their capability produce reactive oxygen species (ROS) under solar irradiation, covalent organic frameworks (COFs) with pre-designable structure and unique architectures show great potentials for water purification. However, the sluggish charge separation, inefficient activation poor stability in COFs restrict practical applications decontaminate water. Herein, via a facile one-pot synthetic strategy, we direct conversion of reversible imine linkage into rigid thiazole can adjust...
Electrochemical oxidation of p-nitrophenol was examined using different anodic materials, including Ti/boron-doped diamond (BDD), Ti/SnO2−Sb/PbO2, and Ti/SnO2−Sb anodes. The results demonstrated that Ti/BDD anodes had a much stronger mineralization performance than the other two Furthermore, it found hydroxyl radicals could mainly exist as free at BDD anodes, which react with organic compounds effectively. This implied dominant mechanism for higher capacity would be attributed to existence...
We demonstrate a long-sought reliable method for determining the important branching ratio $\ensuremath{\eta}$ between photogenerated charged polarons and neutral excitons in $\ensuremath{\pi}$-conjugated polymer films solutions, using femtosecond transient photomodulation spectroscopy with broad spectral range from 0.14 to $2.7\phantom{\rule{0.3em}{0ex}}\mathrm{eV}$. found that both are instantaneously photogenerated, but critically depends on film nanomorphology, which ultimately controls...
The deposition and re-entrainment behaviors of five sizes carboxylate-modified microspheres (ranging from 0.1 to 2.0 μm) were examined both in porous media impinging jet systems under a variety environmentally relevant pore fluid velocities (2−8 m day-1), the absence presence an energy barrier deposition. magnitudes efficiencies compared among equivalent velocities, solution chemistries, surface chemistries. observed factors about 5 50 greater relative across entire size range examined,...
Plastic particles are widely present in the natural environment and highly likely to interact with bacteria (the ubiquitous microbes environment), which might affect transport deposition of porous media. In this study, significance plastic from nanoscale micrometer-scale (0.02–2 μm) on behaviors (Escherichia coli) quartz sand was examined under environmentally relevant conditions both NaCl CaCl2 solutions at pH 6. The results showed that presence different-sized did not bacterial low ionic...