TY - JOUR
T1 - Co3O4 nanoforest/Ni foam as the interface heating sheet for the efficient solar-driven water evaporation under one sun
AU - Wang, Pengfei
AU - Gu, Yufei
AU - Miao, Lei
AU - Zhou, Jianhua
AU - Su, Hui
AU - Wei, Anyun
AU - Mu, Xiaojiang
AU - Tian, Yongzhi
AU - Shi, Jiaqi
AU - Cai, Huanfu
N1 - Funding Information:
This work was funded by the National Natural Science Foundation of China (Grant No. 51572049, 51602068), Natural Science Foundation of Guangxi province, China (Grant No. 2015GXNSFFA139002) and Guangxi Science and Technology Project (Grant No. AD18281057).
Funding Information:
This work was funded by the National Natural Science Foundation of China (Grant No. 51572049 , 51602068 ), Natural Science Foundation of Guangxi province , China (Grant No. 2015GXNSFFA139002 ) and Guangxi Science and Technology Project (Grant No. AD18281057 ).
Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/7
Y1 - 2019/7
N2 - Solar-driven water evaporation is a near-perfect utilization of solar energy and a promising solution for water shortage. However, the sunlight-induced evaporation must rely on advanced photothermal conversion materials. In this article, we succeeded in synthesizing commercial Ni foam loading Co3O4 with nanoscale superstructures via hydrothermal-calcination method and studied photothermal conversion performance of this composite. The band gap of Co3O4 is relatively narrow and the multi-level nanostructures anchored on 3D Ni-skeleton increase light–matter interaction length and absorption times, so the Co3O4/Ni foam exhibits excellent light absorption. In the solar -driven water evaporation experiment, the highest evaporation rate is up to 1.226 kg m−2 h−1 and the highest photothermal conversion efficiency is over 80% under the illumination density of 1 kW m−2. After many circular tests, there is not significant decline in efficiency. Based on this, the Ni foam loading Co3O4 nanoforest is a prospective candidate for solar photothermal conversion material.
AB - Solar-driven water evaporation is a near-perfect utilization of solar energy and a promising solution for water shortage. However, the sunlight-induced evaporation must rely on advanced photothermal conversion materials. In this article, we succeeded in synthesizing commercial Ni foam loading Co3O4 with nanoscale superstructures via hydrothermal-calcination method and studied photothermal conversion performance of this composite. The band gap of Co3O4 is relatively narrow and the multi-level nanostructures anchored on 3D Ni-skeleton increase light–matter interaction length and absorption times, so the Co3O4/Ni foam exhibits excellent light absorption. In the solar -driven water evaporation experiment, the highest evaporation rate is up to 1.226 kg m−2 h−1 and the highest photothermal conversion efficiency is over 80% under the illumination density of 1 kW m−2. After many circular tests, there is not significant decline in efficiency. Based on this, the Ni foam loading Co3O4 nanoforest is a prospective candidate for solar photothermal conversion material.
KW - CoO
KW - Ni-foam
KW - Photothermal conversion
KW - Solar-driven water evaporation
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U2 - 10.1016/j.susmat.2019.e00106
DO - 10.1016/j.susmat.2019.e00106
M3 - Article
AN - SCOPUS:85067970041
VL - 20
JO - Sustainable Materials and Technologies
JF - Sustainable Materials and Technologies
SN - 2214-9937
M1 - e00106
ER -