Qisu Zou

Huazhong University of Science and Technology

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Duan Zhang

Los Alamos National Laboratory

W. B. VanderHeyden

BP (United Kingdom)

Shuling Hou

Central South University

Xia Ma

Los Alamos National Laboratory

Xiaoyi He

Air Products (United States)

David H. Sharp

Los Alamos National Laboratory

Brian Vanderheyden

BP (United Kingdom)

Gary D. Doolen

Los Alamos National Laboratory

Louis J. Durlofsky

Stanford University

N. T. Padial‐Collins

Los Alamos National Laboratory

Cooperative Institutions

Huazhong University of Science and Technology

Los Alamos National Laboratory

Hubei Provincial Water Resources and Hydropower Planning Survey and Design Institute

Kansas State University

Wuhan National Laboratory for Optoelectronics

Massachusetts Institute of Technology

Tsinghua University

Continuum Dynamics (United States)

Stanford University

Pennsylvania State University

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Facile Recovery of Lead in Discarded Perovskite Solar Cells via Ultrasonic Water Leaching

Environmental Science & Technology Letters (2025)

Guang Hu Zhaoyang Li Qisu Zou Shifa Zhou Sha Liang

Perovskite solar cells (PSCs) stand at the forefront of advanced optoelectronic devices because of their high theoretical power conversion efficiency, cost-effectiveness, and broad application potential. However, as a crucial component in high-performance PSCs, highly toxic lead may leak from discarded PSCs and cause environmental and health risks. Implementing the effective recovery of lead from discarded PSCs is crucial for the sustainable development of the PSC industry. Existing lead recovery methods commonly use toxic organic solvents as leaching reagents, i.e., dimethyl formamide and dimethyl sulfoxide, impeding the potential application of recycling technologies. This study proposes a facile ultrasonic water leaching technique for effectively recovering lead from the glass substrate of discarded PSCs. During the ultrasonic water leaching process, the perovskite layer undergoes rapid degradation, generating PbI2. Most of the PbI2 dissolves in the water, yielding a leaching solution containing a low lead concentration, while a minor fraction is converted into insoluble Pb(OH)I particles. The cumulative Pb removal ratio from the first two cycles of ultrasonic water leaching processes can reach 99.84%. High-purity (>99.9 wt %) PbI2 crystals could be synthesized through an evaporation–crystallization step. This study proposes a vital strategy for the sustainable management of discarded perovskite photovoltaic devices without the addition of any organic solvents.

Lead (geology)

10.1021/acs.estlett.4c00735

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Citations (0)

Effective medium boundary conditions for upscaling relative permeabilities

Timothy C. Wallstrom Shengwen Hou Michael Andrew Christie Louis J. Durlofsky David H. Sharp

Source

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Citations (4)

A improved incompressible lattice Boltzmann model for time-independent flows

Journal of Statistical Physics (1995)

Qisu Zou Shuling Hou Shiyi Chen Gary D. Doolen

Lattice Boltzmann methods

Incompressible Flow

Pressure-correction method

Boltzmann constant

Constant (computer programming)

10.1007/bf02179966

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Citations (172)

Resolving Discontinuous Interfaces of Multiphase Flows Using a Material Point Method

Bulletin of the American Physical Society (2007)

Xia Ma Duan Zhang Qisu Zou P. T. Giguere

Material Point Method

Multiphase flow

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Comprehensive technical evaluation and optimization of a carbon-neutral biomass-based power system integrating supercritical CO2 combustion and CO2 liquefaction with hydrogen production

International Journal of Low-Carbon Technologies (2024)

Qisu Zou Hussein A Jaffar A.S. El-Shafay Diwakar Agarwal Luma Sabah Munshid

Abstract The increasing reliance on fossil fuels poses critical challenges for energy systems. A novel power generation system integrating electricity/hydrogen production, oxy-fuel combustion, and CO2 liquefaction is evaluated through technical analysis and multi-objective optimization. Further, biomass-derived syngas powers the system, while a solid oxide electrolyzer (SOE) converts surplus energy into hydrogen, enhancing flexibility and efficiency. CO2 liquefaction reduces the levelized cost of electricity, contributing to economic feasibility. In addition, the system achieves optimized results with a cost of $0.37/kWh and $4.9 million in cash flow, demonstrating its potential as an efficient, sustainable energy solution with a 5.4% reduction in power.

10.1093/ijlct/ctae268

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Transport in Porous Media (2002)

Timothy C. Wallstrom Shengwen Hou Mike Christie Louis J. Durlofsky David H. Sharp

Relative permeability

10.1023/a:1015003527103

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Citations (43)

Pressure calculations in disperse and continuous multiphase flows

International Journal of Multiphase Flow (2006)

Duan Zhang W. B. VanderHeyden Qisu Zou N. T. Padial‐Collins

Multiphase flow

Tension (geology)

Continuous modelling

10.1016/j.ijmultiphaseflow.2006.07.006

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Citations (26)

Computational Geosciences (2001)

James Glimm Shuling Hou Hongjoong Kim Yoonha Lee David H. Sharp

Oil Production

Realization (probability)

10.1023/a:1013715604079

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Citations (23)

Bifurcation and stability analysis of micromixing effects in the chlorite—iodide reaction

Chemical Engineering Science (1994)

Rodney O. Fox G.H. Erjaee Qisu Zou

Micromixing

10.1016/0009-2509(94)00155-3

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Citations (14)

Overtaking collision between two solitary waves

The Physics of Fluids (1986)

Qisu Zou Chau-Hsing Su

Under the assumptions of long wavelength, small amplitude, and propagation in one direction, it is well known that the water wave equations in the lowest order of approximation with slow variation in time and space can be reduced to the Korteweg–de Vries (KdV) equation. Linear inhomogeneous equations with their coefficients, as well as the inhomogeneous terms depending on the solutions of the lower-order equations, have been obtained in the next order and the third order of approximation. An accurate numerical method is used to integrate these equations for an overtaking interaction between two solitary waves. It is found, up to the second order of approximation, that the collision is elastic, i.e., the solitary waves regain their original form without giving rise to any secondary wave. The results of second-order solution are in good agreement with the analytic solution of Sachs [SIAM J. Math. Anal. 15, 468 (1984)]. However, the numerical computation on the third-order equation shows a secondary wave train trailing behind the smaller wave after the collision.

Overtaking

10.1063/1.865599

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Citations (48)