Haowei Chen

ORCID: 0000-0003-0250-5689
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Research Areas
  • Crystallization and Solubility Studies
  • X-ray Diffraction in Crystallography
  • Metal complexes synthesis and properties
  • CO2 Reduction Techniques and Catalysts
  • Supercapacitor Materials and Fabrication
  • Metal-Catalyzed Oxygenation Mechanisms
  • Conducting polymers and applications
  • 2D Materials and Applications
  • Catalytic Processes in Materials Science
  • Magnetism in coordination complexes
  • Photorefractive and Nonlinear Optics
  • Quantum optics and atomic interactions
  • Copper-based nanomaterials and applications
  • Electronic and Structural Properties of Oxides
  • Quantum Information and Cryptography
  • Crystal Structures and Properties
  • Organic Light-Emitting Diodes Research
  • Advanced Control Systems Optimization
  • Magnetic and transport properties of perovskites and related materials
  • Advanced Photocatalysis Techniques
  • Water Quality Monitoring and Analysis
  • Advanced Sensor and Energy Harvesting Materials
  • Electrocatalysts for Energy Conversion
  • ZnO doping and properties
  • Nonlinear Optical Materials Research

Dalian Institute of Chemical Physics
2022-2025

Tsinghua University
2022-2024

Chinese Academy of Sciences
2022

Central South University of Forestry and Technology
2021

Central South University
2021

Shanxi University
2021

First-principles calculation of nonlinear magneto-optical effects has become an indispensable tool to reveal the geometric and topological nature electronic states understand light-matter interactions. While intriguingly rich physics could emerge in magnetic materials, further methodological developments are required deal with time-reversal symmetry breaking, due degeneracy gauge problems caused by low-frequency divergence problem existing formalism. Here we present a gauge-covariant...

10.1103/physrevb.105.075123 article EN Physical review. B./Physical review. B 2022-02-10

The size effect in semiconductor photocatalysis has been widely investigated but still remains elusive. Herein, employing p-type Cu2O nanocubes as the heterogeneous photocatalysts, we propose a feasible optimization strategy to enhance photocatalytic performance of semiconductors. With increasing from 2.5 nm (exciton Bohr radius) 5 (twice exciton radius), corresponding calculated band gap decreases 3.39 2.41 eV, indicating that controlling above twice radius is vital for retaining...

10.1021/acscatal.3c02710 article EN ACS Catalysis 2023-08-14

Hydrogenation of metal nitrides is particular interest due to the direct relevance Haber‐Bosch ammonia synthesis. To date, for all bi‐ and multi‐nuclear bridging reported thus far, only those featuring bent M−N−M cores can react with dihydrogen (H2) related H2‐derived species, while vast majority linear congeners cannot. Herein, we present a detailed electronic‐structure study prototypical bimetallic µ‐nitrides [Cp*FeIV(μ‐SEt)2(μ‐N)FeIVCp*][PF6] (1, Cp* = η5‐C5Me5)...

10.1002/anie.202424571 article EN Angewandte Chemie International Edition 2025-05-07

Hydrogenation of metal nitrides is particular interest due to the direct relevance Haber‐Bosch ammonia synthesis. To date, for all bi‐ and multi‐nuclear bridging reported thus far, only those featuring bent M−N−M cores can react with dihydrogen (H2) related H2‐derived species, while vast majority linear congeners cannot. Herein, we present a detailed electronic‐structure study prototypical bimetallic µ‐nitrides [Cp*FeIV(μ‐SEt)2(μ‐N)FeIVCp*][PF6] (1, Cp* = η5‐C5Me5)...

10.1002/ange.202424571 article EN Angewandte Chemie 2025-05-07

One of the most important nonlinear optical (NLO) effects is second-harmonic generation (SHG), and crystals with strong SHG are called NLO crystals. The traditional anion group theory has guided early discovery crystals, but variety NLO-active motifs discovered so far limited. In this study, material-type unbiased high-throughput first-principles calculations performed to screen thousands materials in a database for at target frequencies. electronic, linear, properties these calculated....

10.1103/physrevmaterials.8.085202 article EN Physical Review Materials 2024-08-19

A flexible macrocyclic ligand with two tridentate {CNC} compartments can host Cu ions in reversibly interconvertible states, CuI (1) and mixed-valent Cu1.5 (2). They were characterized by XRD multiple spectroscopic methods, including EPR, UV/Vis absorption MCD, combination TD-DFT CASSCF calculations. 2 features a short Cu⋅⋅⋅Cu distance (≈2.5 Å; compared to ≈4.0 Å 1) very high delocalization energy of 13 000 cm-1 , comparable the state biological CuA site. Electron self-exchange between 1 is...

10.1002/anie.202215840 article EN Angewandte Chemie International Edition 2022-12-12

Abstract The interplay of polarization and magnetism in materials with light can create rich nonlinear magneto-optical (NLMO) effects, the recent discovery two-dimensional (2D) van der Waals magnets provides remarkable control over NLMO effects due to their superb tunability. Here, based on first-principles calculations, we reported giant CrI 3 -based 2D magnets, including a dramatic change second-harmonics generation (SHG) direction (90°) intensity (on/off switch) under magnetization...

10.1038/s41524-024-01266-x article EN cc-by npj Computational Materials 2024-04-22

A flexible NHC/pyridine macrocyclic ligand scaffold that provides two tridentate {CNC} compartments is shown to host Cu ions in reversibly interconvertible redox states, CuICuI (1) and mixed-valent Cu1.5Cu1.5 (2). They were comprehensively characterized by X-ray diffraction (XRD) multiple spectroscopic methods, including electron paramagnetic resonance (EPR), UV-Vis absorption magnetic circular dichroism (MCD), combination with TD-DFT CASSCF calculations. 2 features an extremely short Cu⋯Cu...

10.26434/chemrxiv-2022-q86dm preprint EN cc-by-nc 2022-10-27

Abstract A flexible macrocyclic ligand with two tridentate {CNC} compartments can host Cu ions in reversibly interconvertible states, I ( 1 ) and mixed‐valent 1.5 2 ). They were characterized by XRD multiple spectroscopic methods, including EPR, UV/Vis absorption MCD, combination TD‐DFT CASSCF calculations. features a short Cu⋅⋅⋅Cu distance (≈2.5 Å; compared to ≈4.0 Å very high delocalization energy of 13 000 cm −1 , comparable the state biological site. Electron self‐exchange between is...

10.1002/ange.202215840 article EN cc-by-nc Angewandte Chemie 2022-12-12

After the ultra-low emission retrofit of power plant units, due to frequent changes in boiler load, many plants tend use excessive ammonia injection ensure that outlet nitrogen oxides (NO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">x</inf> ) concentration selective catalytic reduction (SCR) denitration system meets standard. However, this can lead hazards such as escaping and blocking downstream equipment. To solve problem, paper proposes an...

10.1109/ccdc52312.2021.9602739 article EN 2021-05-22
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