Qixian Xie

Nankai University

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Xiaoming Sun

Beijing University of Chemical Technology

Daojin Zhou

Beijing University of Chemical Technology

Jingshan Luo

Nankai University

Zhao Cai

China University of Geosciences

Yaping Li

Beijing University of Chemical Technology

Xuya Xiong

Aarhus University

Yongmin Bi

Beijing University of Chemical Technology

Xue Duan

Beijing University of Chemical Technology

Lili Wan

University of California, Santa Barbara

Yin Jia

China University of Geosciences (Beijing)

Cooperative Institutions

Beijing University of Chemical Technology

Nankai University

Beijing Advanced Sciences and Innovation Center

Chinese Academy of Sciences

Tsinghua University

State Key Laboratory of Chemical Engineering

University of Chinese Academy of Sciences

Peking University

Collaborative Innovation Center of Chemical Science and Engineering Tianjin

Unité Matériaux et Transformations

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Enhancing oxygen evolution reaction by cationic surfactants

Nano Research (2019)

Qixian Xie Daojin Zhou Pengsong Li Zhao Cai Tianhui Xie

Oxygen evolution

Surface Modification

Reversible hydrogen electrode

Ammonium bromide

10.1007/s12274-019-2410-z

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Citations (37)

Crystal facet effect induced by different pretreatment of Cu2O nanowire electrode for enhanced electrochemical CO2 reduction to C2+ products

CHINESE JOURNAL OF CATALYSIS (CHINESE VERSION) (2022)

Yang Fu Qixian Xie Linxiao Wu Jingshan Luo

Facet (psychology)

Nanosheet

Crystal (programming language)

Carbon fibers

10.1016/s1872-2067(21)63981-5

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Citations (32)

Electrochemical Transformation of Limestone into Portlandite and Valuable Carbonaceous Products

Qixian Xie Lili Wan Zhuang Zhang Jingshan Luo

The cement industry is one of the largest contributors to global CO2 emissions, and it is extremely challenging to decarbonize the cement industry, as most CO2 emissions results from the calcination of limestone (CaCO3) into CaO and CO2. In this work, we demonstrate a novel electrochemical process that transforms CaCO3 into portlandite (Ca(OH)2, a key Portland cement precursor) and valuable carbonaceous products, which integrates electrochemical water splitting and CO2 reduction reaction with the chemical decomposition of CaCO3. With different metal catalyst electrodes, we have achieved Ca(OH)2 and various valuable carbonaceous products, such as CO, formate, methane, and ethylene. Our work revolutionizes cement production and provides a green and sustainable path toward carbon neutrality for the cement industry.

Portlandite

Carbon fibers

10.26434/chemrxiv-2022-0h2ll

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Citations (1)

Formation Mechanism of Sintering Crack in Mo–W–ZrO<sub>2</sub> Sensor for Molten Steel Temperature Caused by Water Vapor

ISIJ International (2022)

Jiu Zhang Qixian Xie Guohui Mei Zhizhong Mao

Mo–W–ZrO2 cermet, which is usually sintered in H2, has been used for molten steel temperature sensor. However, the crack caused by water vapor during its sintering limits the industrial application. Thus, the mechanism of crack formation has been investigated. Cracks are mainly caused by a significant volume expansion which is attributed to that the metal powders of the green body of cermet are oxidized by water vapor. The obvious expansion of approximately 17% in diameter occurs below 1200°C, reducing the bonding strength. Meanwhile, the support frame for the sintering restricts the expansion. Both of them are the main reasons for the crack formation. At higher temperature, the volume of above oxidized metal powders decreases caused by the reduction of H2. The volume of the metal powders increases first and then decreases, which leads to a more difficult sintering densification. Moreover, the ceramic powders are sintered earlier and form a skeleton. As a result, the sintering densification is restrained and the pores form. As the water vapor is eliminated through the H2 filling and pumping vacuum, the problems of cracks and pores are addressed, which is helpful to solve the main contradiction in industrial application of the Mo–W–ZrO2 sensor.

Cermet

Volume expansion

10.2355/isijinternational.isijint-2021-526

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Citations (0)

Density Gradient Ultracentrifugation of Colloidal Nanostructures

Springer briefs in molecular science (2018)

Liang Luo Qixian Xie Yinglan Liu

Nanomaterials

10.1007/978-981-10-5190-6_5

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Citations (1)

Engineering Interfacial Aerophilicity of Nickel-Embedded Nitrogen-Doped CNTs for Electrochemical CO₂ Reduction

ACS Applied Energy Materials (2019)

Ruida Chen Weiliang Tian Yin Jia Wenwen Xu Fanhong Chen

Electrochemical CO2 reduction reaction (CO2RR) is a promising approach for conversion of CO2 to value-added chemicals. In this contribution, we demonstrated an electrode design strategy via wettability control and fabricated a freestanding three-dimensional electrode. This electrode design strategy created more three-phase (solid–liquid–gas) contacts due to the sufficient amount of CO2 gas bubbles attached to the surface of the electrode under catalytic turnover conditions and the ongoing change of electrolyte wetting, and replacement of electrolyte by the gas bubble promotes the activity of CO2RR. This work exploits a new way that sheds light on electrode design for underwater gas-consumption electrocatalytic applications.

10.1021/acsaem.9b00395

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Citations (28)

Effects of redox-active interlayer anions on the oxygen evolution reactivity of NiFe-layered double hydroxide nanosheets

Nano Research (2017)

Daojin Zhou Zhao Cai Yongmin Bi Weiliang Tian Ma Luo

Overpotential

Oxygen evolution

Layered double hydroxides

10.1007/s12274-017-1750-9

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Citations (167)